Bike Size Chart – How To Choose? 7 Easy Methods

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Bike size chart

You might be worried about not being able to ride your bike before you can try it. I assure you that it is possible. This is what salesmen will tell you to make more money! It is important to test your bike before you buy it. FALSE!

Why? This is because it’s only sold by people who are aware that there are good bikes available online. There are many ways to find a quality bike. Let me show you. If you don’t know how to measure a bicycle, please read the METHODS section.

You feel more confident. It’s possible. Actually, there are six methods to measure. There are two options: You can use or calculate the below bike-size charts. Measurements are taken from the point where the seat posts meet the crank. These are the details to help you decide what size bike you need.

Let’s start with the easiest

Method One: Bike Height Chart – The Easiest

Your height / Bike Size

  • 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

Method 2: Calculating the bike’s size

  1. Stand with your legs spread about 15-20 cm (6-8″) from the ground. Take a measurement of the distance from the ground to the top of your crotch.
  2. Make sure you choose the right type of bike for you: mountain bike, city bike, or road bike. You can read about the different bike types from here.
  3. You can now use your calculator to calculate the correct size.

City bike – Leg inseam (cm) x0,685= Your frame size

Mountain bike- Leg inseam (cm), x0,66= Your frame size
Road bike – Leg inseam (cm) x0,70= Your frame size

If your leg inseam measures 76cm, your mountain bike size is 50cm (20″), road bike 53cm, and city bike 52cm (if so, your right mountain bike is 50cm (20″).

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 (Applicable for commuter and hybrid bike also) 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.

Bike size chart

Did you find the right size? 

That’s great! Now, go cycling!

Please Note : Frame sizes available from XXS-XXL. Manufacturers may not use the same terminology. These sizes, like on clothes, show current model sizes.

Now the extra four from seven

The right saddle height has a very important role. It should not be too low or you will have less power. In mountain bike racing, I’ve experienced it. My force is affected by the saddle being one inch lower than normal. I lose 25-50% of it. I should stop, let the group go and then fix it. I lose 15 seconds. You can even advance to the next group. The right saddle height is important and it have a big role.

The easiest way to do it is to

  1. Keep your back against the wall. Sit on the bike with your elbow on it.
  2. Place your leg to the Lowest point. But parallel to the ground.
  3. You can move your saddle up and down until you are satisfied with the position and have a nice bend behind your knee. You should aim for something between 30 and 35 degrees, but don’t waste your time trying to find the perfect angle.

Test Drive with this. Is it good? If it does not feel good, you can adjust. You can also adjust the seat forward and back.

But, which brand should you buy? Check out our to recommendations.

Caution: Mark it with a sharp object if you have the correct height. This is the most accurate size chart you will ever find. Some bikes are marked with centimeters. Keep this in mind.

What if I got my bike size wrong?

Ask your merchant if you can return your bike to him so he can get the correct one. You can also do the following things, if you don’t wish to return. These are the things:

  • Your saddle can be moved to the front or back
  • You can  buy a shorter or longer stem. It can alter your body position
  • Purchase a longer seat post

It will take some time for you to feel the right feeling. When I was 29, I still remember the feeling. It was like riding in a ship, and it felt difficult to get on board in narrow trails in the forest. Now I find myself laughing every time I ride a 26-inch mountain bike.

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