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Bike Size Chart – How To Choose? 5 Easy Methods

Jeff Balton

Choosing the right size bicycleOrdering bikes online is becoming more and more popular because there are no shop-keeping or warehouse costs making the cost even less!

Don’t worry about the fact that you might think you have to try your bike first because I can assure you it is overrated. And very highly.

Salesmen only tell you this to get more money from you!

You should try your bike first! FALSE

Asking why? It’s because that is only told by salesmen who know that there are decent bikes on the online market. There are many good methods to choose a good bike. I’m gonna show you THREE (actually SIX!) METHODS if you don’t know, how to measure a bike.

Feeling more confident? Good. There are actually three (now SIX!) options: you can calculate or use the bike-size charts below. The bike size is measured from where the seat post starts and to the crank. So if you don’t know, what size bike do I need, here are the answers:

Let’s start with the easiest

Method One: Bike Height Chart – The Easiest

Your height / Bike SizeHybrid Bike Size Chart

  • 4’11” – 5’3″ = 13 – 15 inches
  • 5’3″ – 5’7″  = 15 – 16 inches
  • 5’7″ – 5’11” = 16 – 17 inches
  • 6’0″ – 6’2″ = 17 – 19 inches
  • 6’2″ – 6’4″  = 19 – 21 inches
  • 6’4″ and taller  = 21+ inches


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Method Two: Calculating the bike size:

  1. Take off your shoes and stand with your legs about 15-20 cm(6” – 8”) apart. Measure the height from the ground to your crotch.
  2. Be sure of the type of bicycle you want: Mountain bike, city bike or road bike. You can read about the different bike types from here.
  3. Now you can take your calculator and calculate the right size:
    Leg Inseam method

City bike – Leg inseam (cm) x 0,685 = Your frame size
Mountain bike –  Leg inseam (cm) x 0,66 = Your frame size
Road bike – Leg inseam (cm) x 0,70 = Your frame size

(If your leg inseam is 76cm, then your right mountain bike size is 50 cm (20”), road bike 53cm and city bike 52cm)

or use the the


Best Bike Deals At The Moment

Third Method: Bike Size Chart (advanced):

Mountain bike size chart

Rider heightLeg inseam                                                Suggested Frame Size
4`10”-5`1”148-158 cm24-29”61-73 cm< 14″XS
5`1″-5`5″158-168 cm25-30”63-76 cm15” / 16″S
5`5″-5`9″168-178 cm26-31”66-78 cm16” / 17″M
5`9″-6`0″178-185 cm27`-32`68-81 cm17″ / 18″L
6`0″-6`3″185-193 cm28`-33`71-83 cm18″ / 19″XL
6`1″-6`6″193-198 cm29`-34`73-86 cm19″ +XXL


City bike (Also commuter/hybrid bikes) size chart


Rider heightLeg inseamSuggested Frame Size
4`10”-5`1”147-155 cm24-29”61-73 cm14”XS
5`1`-5`5`155-165 cm25-30”63-76 cm15”S
5`5`-5`9`165-175 cm26-31”66-78 cm16”M
5`9`-6`0`175-183 cm27`-32`68-81 cm17″L
6`0`-6`3`183-191 cm28`-33`71-83 cm18″XL
6`1`-6`6`191-198 cm29`-34`73-86 cm19″XXL

Road bike size chart

Rider heightSuggested frame size
4`10”-5`0”148-152 cm47-48 cmXXS
5`0″-5`3″152-160 cm49-50 cmXS
5`3″-5`6″160-168 cm51-52-53 cmS
5`6″-5`9″168-175 cm54-55 cmM
5`9″-6`0″175-183 cm56-57-58 cmL
6`0″-6`3″183-191 cm58-59-60 cmXL
6`3″-6`6″191-198 cm61-62-63 cmXXL

To make it simple – Bicycle Guiders’ bike size graph.

Right size bike - bike size graph by bicycle Guider

Got the right size? Nice! And now go cycling!

Please note that frame sizes from XXS – XXL don’t have the same meaning for every manufacturer. Those sizes (like on clothing) show current model sizes.



Read next: How to fit a bike


The right saddle height Right Saddle Heighthas a very important role. If it’s too low, you won’t have enough power in your feet. In mountain bike racing, I have experienced that when the saddle falls one inch down from normal, I lose about 25-50% of my force. I better stop and let the group go, then fix it and lose 15 seconds but I do catch the group and can even get the next group ahead. So the right saddle height plays a big role!

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The easiest way is to

  1. Lean to the wall with your elbow sitting on the bike (or let someone help you as shown on the picture)
  2. But your leg to lowest point but parallel to the ground.
  3. Move your saddle up or down until you have nice bend behind your knee. It should be something around 30 ° but don’t waste too much energy finding that exact angle.

Go out and ride. Does it feel good? If not, then adjust. Also, you can adjust the seat to front and rear. 

See also: Bike size charts & info on Bikexchange

TIP: If you got the right height, mark it down with some sharp object. That’s the best size chart ever 🙂 Some bikes have centimeters marked there, then keep this in mind.

If I Got My Bike Size Wrong?

Then ask your merchant, if you can send your bike back to get the right one. If you don’t want to do that, then you can do the following things:

  • Move your saddle to the front or rear
  • Buy a longer or shorter stem. It changes your body position
  • Buy a longer seat post

Give it time to get the feeling right. I remember when I got my first 29er mountain bike. It felt like a ship and seemed difficult to ride in narrow trails of the forest. Now I start laughing when I sit on a 26″ mountain bike because it looks so tiny.

Related Bike Reviews:

Mountain Bike Reviews

Hybrid Bike Reviews

Best Road Bikes

Read Next  > Best Bike Deals (At The Moment)

This Article Has 110 Comments

  • Anna Bean says:

    I find this very confusing! Also, I’m sure you have noticed that women tend to have much longer legs than men do for the same height, (while men have longer bodies) and your charts are clearly geared towards men. You need separate charts for men and women. Even your chat using inner leg length is way out for me (as a female).

    • Jeff - Senior Writer/CEO says:

      Hi Anna,

      You are right – leg inseam method is not the best for women. Feel free to choose your bike by looking for overall height.

  • Bee says:

    Really helpful and comprehensive information on bike size. It’s to pick the right size for me without trying. However, with this bike size chart, I can easily find the most suitable bike. Already shared it with my friends and bookmarked it. Thank you for making the comprehensive guide and nice infographic Jeff.

  • Jordan Schleck says:

    I am 157cm. what frames size do I need to use in mountain bike 29, road bike and TT bike?

  • Vinoth says:

    Information which you have provided are really useful for the all people. Thank you so much for the information.
    But i need to know one thing, Let consider my height is 6.0” but i bought frame size M/L or ( 16” to 19”) frame size bike. Can I adjust the saddle based on my height or that is not recommended. If not recommended please let me know why?

    • Jeff - Senior Writer/CEO says:

      Yes, you can adjust your saddle to the right height. It’s a final tune to get the right fit.

  • Chris says:

    Hi I’m confused. Your charts have a maximum 22 inch frame. Yet you have a 29 inch, and think 26 is tiny. Are you a giant or am I misunderstanding something here…?

    • Jeff - Senior Writer/CEO says:

      Hi Chris. 26″, 27.5″ & 29″ are bike wheel sizes. 22 is bike FRAME size. We make an update to clarify it 🙂

  • Dawie says:

    Hi Jeff! What is the best place for Christmas pressies? I want to buy a bike for my 2 y/o daughter.

  • Chris says:

    Hi Jeff

    I seem to fall in between frame sizes. I am 6’4 with a 33” inseam. What would you suggest.

    • Jeff - Senior Writer/CEO says:

      Hi Chris,

      Depending on the models. Look the merchant’s size charts. Everything above 19″ and 62cm on road bikes will work.

  • Kay foulds says:

    Hi I need a three wheeler bike for my 5ft daughter will 24″ suit?

  • Mike Smith says:

    Hi. I’m 6’2″ and looking at a used Giant that is 56mm. would that work for me? I’m finding few 50-60cm for sale (used)

    • Jeff Balton says:

      Hi Mike,
      It’s hard to tell since, according to the charts, that is one size smaller than the one you would ideally need. However, with smaller adjustments, you could make it work. If possible, give it a try to see how it feels.

  • Erin M says:

    Thank you for this information! One question… how should we factor in wheel sizes? Is there a rule on choosing wheel size?

  • Diane Summers says:

    I have awful trouble with bikes… never seem to quite get the right size.!!!!
    I’m 6ft 3in and a 35in inside leg with size 8 feet and large hands ( I have Marfan syndrome) this means my body is not in proportion !!!! And on top of this….. I’m a woman who loves cycling 😀😀😀😀😀😀😀

    • Jeff - Senior Writer/CEO says:

      Hi Diane,

      Since size graphs are quite standard, you might want to try bikes in your local bike shop. Be ready for some stem and saddle adjusts.
      Happy cycling 🙂

  • Darrell says:

    I want to try biking again and want to buy used to start. I’m looking at a ccm 26 inch frame I’m 6’4 would that fit me?

  • Pratap shingte says:

    Hi Jeff

    I am searching a bicycle for my daughter whose overall height is 46 inch and inside leg height is 21 inch. This gonna be her first cycle for learning.
    1) Could you please tell what would be correct frame size, wheel diameter size for her.

    2) Does purchase from online sites like Amazon or flipkart, will land me in trouble by missing some items in package since they are partially assembled.

  • Pratap shingte says:

    She is 6 years old

  • Swapnil Desale says:

    Hi jeff,

    My height is 5”5 & inseam is 70 cm.. I want to buy Roadbike. Should I go for medium size? Is there any specific difference between mediuyand small size? Because one of my friend have medium size and he wants to sell it.

    • Jeff - Senior Writer/CEO says:

      Hello Swapnil, it seems that a Small size would be more suitable for you. However, it depends on the proportions of your body. Since you’re looking to buy a bike from your friend, it’s best to give it a try and see if it fits. If it’s too big, try adjusting the saddle height and using a shorter stem. Cheers! You might want to check the bike fit article.

  • Joel Julian says:

    Hi there

    Does this information also apply to the BMX styles? I’m getting bit by the vintage restoration bug, and my 13yr old son wants an old school BMX. He is roughly 5’5….. just wanting the easiest method for sizing bmx styles- including the bmx style cruisers

    • Jeff - Senior Writer/CEO says:

      Hi Joel, BMX bikes use a slightly different sizing method. The best size for your son would be the so-called Pro frame. It has 20” wheels and a top tube length of 20” – 20.5”.

  • Adriana says:

    Hi Jeff, I also have a lot of trouble finding a good bike for me. I am 1.51cm height, 32-year-old woman, also I am not too good riding and get terrified of falling over. last time I bought a girls’ bike, with 24” wheels, because I wanted to be able to put my feet in the ground. But to be honest, I feel the bike doesn’t quite fit me! I am considering getting a new one. What would you recommend I look for?

    • Jeff - Senior Writer/CEO says:

      Hey Adriana, I think a regular 26” women’s bike with a step-through frame should be good for you. It will fit you well, and it will be easy for you to put your feet on the ground. Good luck!

  • Rihit says:

    Hi Jeff

    I find your article very useful. Great work!

    I am 5’7″. I got a bike size of 58cm before reading your article (i wish i read it before). Do you see a problem in long run? Or adjusting saddle height and position is ok. I’m using it to commute to work, roughly about 16km every day.

    • Jeff Balton says:

      Hi Rihit,
      Thanks, I’m glad you like the article! 🙂
      Regarding your bike, it’s definitely too large for you. Adjusting the saddle could make it feel better, but it will never make it feel perfect. However, if you feel no aches and have no problems during or after riding it, I say just go for it.

  • Rajarshi Ghosh says:

    Hi Jeff, I fall in between 2 sizes. I am 5th 6 inches which is the max height for S and minimum height for M. For a road bike which size should i choose?

    • Jeff Balton says:

      Hi Rajarshi Ghosh,
      The best thing to do is to try both bikes and see which one fits better. If that’s not possible, you can measure your arm span and compare it to your height. If it’s greater than your height, go for the larger size; if it’s smaller, go for the smaller size. Good luck. 🙂

  • Srinivas says:

    Hi Jeff,
    Iam looking to by a hybrid for city ride and could you please help me in providing the frame size and tire size as well.. Iam 5’5..

    • Jeff Balton says:

      Hi Srinivas,
      A 15″/16″ bike would be great for you. If the standover height is not an issue, feel free to go with 700c wheels as they have many benefits when it comes to city riding. 🙂

  • Ross Turner says:

    Hi Jeff I’m 6 foot 6 will a 23 inch bike be big enough

    • Jeff Balton says:

      Hi Ross,
      Sure, a 23-inch bike sounds like a good fit for you. If possible, it’s best to give it or some similar bike a try, as it’s not a very common height and bike size. Good luck! 🙂

  • Shelby says:

    Hi, thank you for this guide.

    Im a 5’8 woman, slim build and a 31″ inseam.

    Im looking at a bike the owner says the seat tube is 19″ at its shortest. Im finding a lot of discrepancies on the internet about sizing. The bike is an Azuki Sebring if that helps

    • Jeff Balton says:

      Hi Shelby,
      That does not sound like the right fit for you. You should look for a road bike with a 52 cm frame or a mountain bike with a 16″/17″ frame. Happy riding! 🙂

  • Gerald says:

    Hi I have a size 50 bike and my height is 165 and inner is 75 what should the saddle height be

    • Jeff Balton says:

      Hi Gerald, it’s hard to say. Ideally, your leg should have just a slight bend in the knee when you extend your leg fully on the pedal. Play with it until you find a position that feels comfortable.

  • Ivo says:

    Hello, great text. I want to buy Cube Reaction Pro 2019 but don’t know right size, please can you help me..I am male 187 , but my leg inseam is 89 cm. Thank you

    • Jeff Balton says:

      Hi Ivo,
      According to Cube’s size chart, the right size for you would be 19″, or XL. 🙂

  • Han-Lin says:

    Moving the seat back or forward may be okay for those who ride once in a while. It can affect power transfer or cause pain. The solution is to get the right bike fit. I once bought a used road bike that was one size too large. The staff didn’t seem to know that it was too large and I thought that feeling stretched out was normal. I ended up giving it to my friend who’s a little taller than me.

    • Jeff Balton says:

      Hi Han-Lin,
      You’re right, nothing can substitute choosing the right size and it’s difficult to make it feel perfect if you have the wrong size. However, if you are in-between two sizes or you’re just slightly off, adjusting the saddle or changing the stem can be great solutions. 🙂

  • David Miller says:

    I am easily confused, looking at the various ways to chose the right size road bike, I believe one chart shows an inseam of 78cm equals a bike size of 53cm. Another chart shows height of 5.9 to 6.0 feet equals a bike size of 56 to 58 cm.

    I am looking for a flatbar bike and I see the Kestrel RT 1000 Shimano 105 advertised for $1,115.00 but I am not sue what size to order.

    I am 5 feet 10.5 inches tall and an inseam of 31 to 32.

    Can you help me with what cm bike to purchase?

    Thank you

    • Jeff Balton says:

      Hi David,
      The best bike size for you would be 56/57cm or L. Your inseam of 32″ equals 81.82cm x 0.70 = ~57cm 🙂

  • Micah says:

    I’m 6’9″ and 355lbs. Other than an immediate XXL mountain bike, what is a good way to find something I don’t feel I’m going to break? I have 3 kids 5 years old and younger and I want to be able to ride with them. I also don’t want to spend more than $400 on a bike so my best bet would be to find a used one. What are some models that I should be looking for?

    • Jeff Balton says:

      Hi Micah,
      I recommend the so-called “Fat Bikes” for you, as they have very wide tires and are very durable overall. They can carry riders of around 350 lbs. Check out the Kawasaki Mihara, which we have reviewed on our website. You can get a new one for less than $500. 🙂

  • Medhat Ishak says:

    Hi Jeff,
    I have a question does the Amazon Fit Guide charts or any other chart of mountain bikes apply for the hybrid? because none of them mentioned the hybrid bike

    • Jeff Balton says:

      Hi Medhat Ishak,
      Mountain bike size charts can differ from city/hybrid bike size charts, so you should not rely on them 100%. But, you can use them to get a better idea of what you need. 🙂

  • V says:

    I am 5’ 8” tall withan inseam of 29 inches. I just got a 51 cm road bike. Will this be okay for me?

    • Jeff Balton says:

      Hi V,
      That seems to be one size smaller than what you need. However, if you have no problems and it feels good riding it, just keep it up. Otherwise, you can make it fit better by fitting a longer stem and pulling your seat back a bit. 🙂

  • Alif says:

    My height is 170cm and what should be my bike size?

  • Emmanouil says:

    Hi Jeff
    I want to buy a racing bike but I cant decide on the right size. I am 1.75 cm height which is the changing size between M and M/L on a Giant frame. I cant try the bike before ordering it
    What do you recommend?

    • Jeff Balton says:

      Hi Emmanouil,
      It’s best that you contact someone from Giant and ask what they recommend, they can surely help you out. Otherwise, you can measure your arm span and compare it to your height. If it’s greater than your height, go for the L frame. If it’s smaller, choose the M size. 🙂

  • Kick says:

    Hi jeff , i want to buy a bike . My height is 5.6 feet. What is my perfect bike size ?

  • Vasiliy says:

    Hi Jeff,

    I wanted to buy a used Fat Tire bike on Ebay, but it is M size frame and I need XL for my 6”2 height.

    One thing I am trying to understand: the distance from the tube where saddle is to the tube where handle bar is. Is it the same for M and XL sizes?

    Could I just adjust the saddle on M frame to fit my height but still be comfortable on the bike?

    Thanks a lot in advance for your answer

  • Marco Manzo says:

    This absolutely BS. Every person body is different so every person needs to try different frame geometries and sizes in order to find a good fit.

    • Jeff Balton says:

      Hi Marco,
      You are right in that every person is different, however, everyone is also very similar, as we all fall in several categories. Therefore, the idea is to choose the right bike size for your ‘category’ and then make small adjustments with the seat, stem length, and so on. Hope this helps. 🙂

  • Teresa says:

    My son is 4’5 100lbs and I’m not sure what size bike to get him

  • Jessie says:

    Looking for a roadbike, but I’m seeing a lot of sizes in inches not cm. Do u have a conversion chart???

    • Jeff Balton says:

      Hi Jessie,
      Check out the Road Bike Size Chart in this article, it shows the bike sizes both in metric and imperial units. 🙂

  • Evan says:

    I’m looking to get a hybrid bike for my wife’s birthday. She is 5’2”. Would a 15” frame with 28” wheels work or does that seem to big?

    • Jeff Balton says:

      Hi Evan,
      That size sounds about right for her, but the standover height could be a problem. If it’s a step-through frame, then it shouldn’t be an issue at all. 🙂

  • Lee scales says:

    Hi I’m 5″9 and seen the perfect road bike for sale but it has a 21″ frame will this be to big for me? Unfortunately the bike is located quite a drive from me so trying it before I buy ain’t an option.
    Many thanks in advance

    • Jeff Balton says:

      Hi Lee,
      Yes, unfortunately, I am afraid that bike would be too big for you. Good luck finding one that suits you better. 🙂

  • James says:

    Hello Mr.Jeff,

    I owned a road bike ‘ Felt’ brand with the size of 54 cm frame. I’m 170cm tall. Is there anything wrong with the size of the bike? Before this, i used to ride with MTB for 80km with no problems. But with this Road bike, I ride only 30km and my legs get cramp always. Is there something wrong with my bike?

    • Jeff Balton says:

      Hi James,
      That seems like the right size for you. Is your saddle properly adjusted? Make sure that it is not too low, there should be just a slight bend in your knee when you extend your leg. Also, road bikes put your body in a very different position than mountain bikes, so you might need some time to get used to the change. 🙂
      You can read the Bike Fit article on Cycling Advice section

  • Julia says:

    Hey Jeff! Thanks for this article. It’s great. One question. I seem to be on the cusp of small and medium sized frames. I’m a female, 5’5” and 3/4, with like a 78 cm inseam. I saw a used Trek road bike for a great price with a small frame (52), but based on their website I could go either way with a 52 or 54 frame. It’s a nice investment, so I don’t want to get stuck with a road bike thats too small. What would you recommend? Appreciate your help!

    • Jeff Balton says:

      Hi Julia,
      I believe that would be a good size for your height. If possible, visit some local bike shop and try a random Trek road bike with a 52 cm frame to get an idea on how it fits. You’ll know what to expect then. 🙂

  • Isabela says:

    Hi Jeff, I’m 1,42cm 35y old woman, not very good with bikes, lol. I’m so short that I usually don’t find my height in the size charts. I have a 26” women’s mountain bike, It’s almost the right size but I still can barely touch the ground, I feel I could use a smaller one, but not sure how small (frame and wheels). Is there a mountain bike size you would recommend? Thanks a lot

    • Jeff Balton says:

      Hi Isabela,
      There are some bike manufacturers that offer XXS frame sizes, so you should try to find some brand that fits your other requirements. Alternately, you can try a kid’s model with 24″ wheels, as these can be great for adults as well. Good luck! 🙂

  • Kenny says:

    Hi there. Some asked this alr3ady but I was curious because 5’6″ is the cut off for two sizes on road bikes. It is the max at one size and the minimum on the next size up. Which is 5’3″ to 5’6″ and 5’6 to 5’9″. That is a big range. What do you recommend?

    • Jeff Balton says:

      Hi Kenny,
      If possible, it’s best to give both sizes a try and see which one fits better. This is a foolproof method. 🙂 Alternately, you can try to figure out your “Ape index.” Measure your height and your arm span, and then compare the two. If your arm span is greater than your height, go for the larger size. Otherwise, go for the smaller size.

  • Mollie says:

    What would be the proper advice when looking for a beach cruiser bike? I want to get bikes for my boyfriend and I so we can do this together but I’m finding this to be more challening than actually riding a bike

    • Jeff Balton says:

      Hi Mollie,
      Beach cruisers are bikes designed for leisurely rides, so the best advice is to get one that fits you well and that looks fun to ride. Check out our Best Hybrid Bikes guide to get some ideas and find something that you like. As with any other type of bike, make sure to choose the right size. 🙂

  • Mack says:

    I am 192cm tall, what would be my correct bike size?

    • Jeff Balton says:

      Hi Mack,
      The best bike size for your height is 18″-19″ or XL. It would be best if you first gave the bike a try if that’s possible since, depending on the manufacturer, an XXL frame might fit you fine as well.

  • Nancy says:

    Hi Jeff,
    I haven’t ridden a bike in a while. Would a Women Hybrid bike be better for someone who doesn’t ride often and would a 26” be good for my height (5’ 3”)? Do you recommend a good brand?
    Thank you in advance.

    • Jeff Balton says:

      Hi Nancy,
      Yes, I believe a hybrid bike would be great for you, as you can use it for multiple purposes. For your height, I would recommend a 15″-16″ frame size, either with 26″ or 700c wheels. Check out our Best Hybrid Bikes guide to find a great brand! It features some Women’s hybrid bikes as well, but all of them can suit you well with some minor changes. 🙂

  • Anne says:

    Hi Jeff
    I’m going to buy a Vitus Sentier 275 MTB. I’m 5’8″ with 33″ inseam. Medium would fit my length, large is recommended for this inseam.
    Which is the best choice?

    • Jeff Balton says:

      Hi Anne,
      In cases like these, if it’s possible you should try both sizes and determine which one suits you better. If not, try measuring the length of your arm span and comparing it to your height. If it’s greater than your height, choose L; otherwise, go for M. 🙂

  • Nabeila Ghazali says:

    Hi Jeff,

    It has been ages since my last time riding a bicycle. I am now looking for a city bike to use on weekend basis for recreational purpose. Recently, my husband bought a Retro Bike model: 7-SP, Brand: XDS. I found it a bit hard to handle as I am an asian petite woman (height: 149 cm, weight: 45kg), appreciate you could suggest the right size of city bike for me and perhaps the brand as well. Anyway, I want to ride a bike with my son seating at the back too.

    Thank you 😊

    • Jeff Balton says:

      Hi Nabeila,
      It’s great that you want to go back to cycling. Being that you are petite, I think you should go for a 26″ hybrid or cruiser model with a step-through frame, such as the Sixthreezero. Check out this review of the best bikes for women to learn more. Also, stay tuned as we will soon publish an in-depth review of Sixthreezero, so you can see if it suits you. 🙂

  • Norashidi says:

    Hi Jeff,
    I’d bought Argon 18 go! (XS) for my wife and her height is around 162cm. Are this bike size really fits for my wife or I’d wrongly bought incorrect size (my friend told me i should get S size)….i’m a bit confusing right now.
    I plannning to get another bike for myself…most probably Giant TCR Advanced…my height is 164.5cm and one retailer suggesting me to get a XS size too. But i want to get S size,…is there any problem with my choice or should i listen to retailer’s advise and stick to XS size…? Thank you in advance!

    • Jeff Balton says:

      Hi Norashidi,
      XS seems about right for your wife. However, in your case, it seems that both S and XS would be good, according to Giant’s sizing guide. But, I’d recommend going for the larger size and choosing S.

  • Dawniece T. says:

    Hi Jeff,
    I really appreciate this article…but I am still a little confused. I am a 6’2″ woman with a 37″ inseam. Long limbs, with a short torso. I was going to attempt to purchase a commuter bike online, but the size charts do not line up due to my leg length not matching my height. Could you help please? Thank you so much!

    • Jeff Balton says:

      Hello Dawniece,
      My advice is to go for the regular frame size for your height which will match your torso nicely. You can always raise the saddle up afterwards to accommodate for your long inseam. 🙂

  • David says:

    Im 5 9″ what frame is good for me. I need a mountain bike.

  • David says:

    I’m 5’9″ with 32.5 inseam
    What size is good for me?

  • Shaheen says:


    My sis is 5ft. Im willing to buy a bicycle for her. plz suggest which bicycle should I buy?

    • Jeff Balton says:

      Hi Shaheen,
      First determine whether you’d like to buy a mountain, a city, or a road bike for your sister. After that, check out the charts in this article to determine which size you should aim for. Hope your sister will like the gift! 🙂

  • Seems like your article is written for bike height not frame length. A 6’5″ rider can end up with to much stress on their hands, wrists, elbows, shoulders, lower back, hips, and knees from squeezing into a short frame with big wheels. You should add that. Meanwhile I will look elsewhere and hopefully find the info. What you did list was good though.

    • Jeff Balton says:

      Hi Alan,
      Thanks for the constructive comment, it’s always appreciated. The 6’5″ height that you mention is an extreme and in such cases it is harder to find the right fit. But, it can still be done with some adjustments. However, riders of average height will have no problem fitting nicely into the sizes we mention in this article. 🙂

  • Kieran says:

    Hi I’m 5ft9.5 with a 32.5″ inseam and a hefty +15cm ape index! (monkey arms) I am looking at buying a 55cm orbea orca (they recommend a 53 on the website) I only have the option of a 55 as it’s clearance stock. They seem to recommend smaller sizes than most other companies.
    Do you think it would be OK?


    • Jeff Balton says:

      Hi Kieran,
      Yes, considering your impressive ape index, I think it should be fine. If it turns out to be too large, you can use a shorter stem and make it fit better. Happy riding. 🙂

  • Prasanth says:

    Hi, I’m 5ft10inch high inseam calculates as 33inch. Saw a northrock xc29 it’s a 29er, good price but only 17.5 frame size. I rode it. But confused if that’s the correct size. Can you advise

    • Jeff Balton says:

      Hi Prasanth,
      Yes, according to Northrock themselves, that’s the right size for your height. If you felt good when you rode it, feel free to go for it. 🙂

  • Carlos Cervantes says:

    Jeff, I desperately need your help. I’m looking at the Santa Cruz Megatower 29er or the Specialized Enduro 29er, maybe the Stumpjumper 29er. I seem to fall between a L and an XL. I’m 6’1”-6’2”, inseam 32-33. Which size would you recommend?

    • Jeff Balton says:

      Hi Carlos.
      For the Megatower, the 19″ (XL) would be the best fit. For the Enduro and Stumpjumper, I’d take the 19″ (L) frame 🙂

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