Bike Frame Size Chart

People buy bikes for different purposes. Some buy them for mountain biking or commuting, while others go for them for racing. However, when it comes to buying a bike, it becomes pretty hectic to choose the right one according to your age and size. If you’ve access to a bike shop, you should try to see if it fits your body type and size.

If the bike shop is inaccessible to you, you’ll have to measure your length, height and size to find the right bike. In addition, bikes come in two types, i-e, bicycles for roads and another one for mountains. Both of them have different measurements. So, decide first what bike you want and proceed with the measurements. 

If you don’t know how to choose the right bike, here we bring you this blog post that talks about bicycles and guides you on which bike is made for you. Let’s dwell on the bike frame size chart below without further ado.

bike frame size chart

Bike Frame Size In Inches

Are you still wondering which bike will suit you according to your size? If so, you’ve hit the right page. The table below will guide you best on the bike’s frame size and height in inches. 

Frame SizeFrame Height
XXS (44)4 ft 8” to 5 ft 1”
XS (48)5 ft 1” to 5 ft 4” 
S (51)5 ft 4” to 5 ft 7”
M (54)5 ft 7” to 5 ft 10” 
L (56)5 ft 10” to 6 ft 0”
XL (58)6 ft 0” to 6 ft 3” 
XXL (60)6 ft 3” to 6 ft 5”
XXXL (62)6 ft 5” to 6 ft 9” 

Bike Frame Size In cm

The table above shows the bike’s frame size and height in inches, whereas the one mentioned below shows the measurements in cm.

Frame SizeFrame Height
XXS (44)142 to 155 cm
XS (48)155 to 163 cm 
S (51)163 to 170 cm
M (54)170 to 178 cm
L (56)178 to 182 cm
XL (58)182 to 190 cm
XXL (60)190 to 196 cm
XXXL (62)196 to 206 cm

Types of Bikes

Since bikes come in two different forms and have different measurements, you need to buy them accordingly. If you want to know the right fit size of road and mountain bike for yourself, go through the details below.

Road Bike Size Chart

The seat tube size is the standard method for sizing road motorcycles. That is the distance between the bottom bracket cup’s center and the seat tube’s top. But when sizing your bike, there are other dimensions to consider. The top tube measurement, stem length, and handlebar reach all play a role in determining how your back will tilt when you’re riding. 

Some riders will bend over into the bike when they have a long reach, making them more aerodynamic. A less aggressive angle allows recreational riders to ride longer and with less back strain. The seat’s measurement is taken in centimeters. It starts on the small end, around 46cm, and ends somewhere around 64cm. 

Moreover, the longer the distance is, the longer all the measurements on the frame will be. Below is a road bike size chart that will guide you in choosing the right fit.

Rider HeightRider InseamBike Frame Size
4 ft 10” to 5 ft 1”25.5″ to 27″46 to 48 cm
5 ft 0″  to  5 ft 3″26.5″  to  28″48 to 50 cm
5 ft 2″ to 5 ft 5″27.5″  to  29″50 to 52 cm
5 ft 4″ to 5 ft 7″28.5″  to  30″52 to 54 cm
5 ft 6″ to 5 ft 9″29.5″  to  31″54 to 56 cm
5 ft 8″ to 5 ft 11″30.5″  to  32″56 to 58 cm
5 ft 10″ to 6 ft 1″31.5″  to  33″58 to 60 cm
6 ft 0″ to 6 ft 3″32.5″  to  34″60 to 62 cm
6 ft 2″ to 6 ft 5″34.5″ to 36″62 to 64 cm

Mountain Bike Size Chart

Back in the 2000s, the sizing of mountain bikes was different than today. The old mountain bikes came in sizes like 16.5 inches, 17.5 inches, 19 inches and 21 inches. It wasn’t until the 2000’s that the makers of bikes introduced bikes with small, medium, large and extra-large sizes. 

Furthermore, the small-size bikes are for people 4’11” to 5’4”, mediums are for those 5’5” to 5’9”, and more prominent for those 5’10” to 6’3”. 

For those on either side, there are extra oversized and extra small frames available, but you might have to compromise the tyre size to have a comfortable fit. In other words, a tiny person might not be able to ride a 29er comfortably. Since the bike makes the most of the effort, there is typically less need to be leaned over and churning vigorously on a mountain bike than on a road bike. 

It will help if you keep your eyes and ears out for hazards and obstructions. Before making a purchase, find a bike you can easily ride. Use the following bike size table for further guidance.

Rider HeightRider InseamBike Frame Size
4 ft 11″ to 5 ft 2″25″ to 27″13″ to 15″
5 ft 2″ to 5 ft 6″27″ to 29″15” to 17”
5 ft 6″ to 5 ft 10″29″ to 31″17″ to 19″
5 ft 10″ to 6 ft 1″31″ to 33″19″ to 21″
6 ft 1″ to 6 ft 4″33″ to 35″21″ to 23″
6 ft 4″ to 6 ft 6″35″ to 37″23″ to 25″

How to Measure Bike Frame Size?

As in mathematics, there are solutions to every problem, and so is the case here. To measure the right bike size, apply the following formula.

Formula: Bike Type x Leg inseam = Your frame size (in centimeters)

Follow this formula to get the right bike size.

  1. Bike Type: Select your bike type from the following:
  • Road bikes – x 0.70
  • Mountain bikes – x 0.685 
  1. Measure your leg inseam: Remove your shoes and stand straight with your legs about 15-22 cm apart; now measure the length of your leg from the ground to your crotch.
  2. Do the Calculation: 
  • Road bike – 0.70 x Leg inseam = Your frame size (cm)
  • Mountain bike – 0.685 x Leg inseam = Your frame size (cm)

For example, if your leg inseam is 65cm and you are looking for a Road bike, the correct size would be 65 x 0.70 = 45.5cm.

Wrap Up

This blog has covered various bike size charts, including road and mountain bikes. Whatever your needs are, you can follow the charts above and find the perfect-sized bike for yourself.

If you neglect these charts, your hard-earned money can go in vain. So, it’s better to read the size charts thoroughly and then purchase a bike. Lastly, even if you have to purchase a bike online, the bike size charts will play an imperative role in helping you find the right size.