Bike Size Chart

bike size chart

The stories you’ve read about how fun cycling on different terrains is are actually great. But that’s just part of the biking puzzle.

In fact, one of the most critical steps in the biking sports is choosing the right bike for you.

Yet, it is the most difficult process to get through for cyclists who prefer to buy bikes online.

So, how do you choose the best bike without wasting time?

Well, it’s only by learning and understanding the bike size chart.

In this guide, we will walk you through the important things that you need to know about bike sizing, so that you can choose the right bicycle within the shortest time possible.

Let's start by explaining some of the common terms used in bicycle sizing charts and other things you need to understand before using bike size charts.

1) Inseam 

By definition, an inseam is the distance between your ankle and your crotch (also known as the inner thigh).

The measurement is important because it helps you to choose the right bike size that you can drive comfortably.

The best part is that measuring this inseam is incredibly simple. It takes just a minute and you can do it on your own.

How to measure inseam

Many people base their inseam on jeans or pants’ size. Although this is okay, it isn’t often the most accurate approach.

So you might want to take your jeans or pants off for a precise measurement. Remember, the more precise your inseam, the better.

  1. Remove your shoes
  2. Stand with your back against a wall and then spread your feet about 8 inches apart
  3. Place a very large book between your legs and make sure your spine is firm against your inner thigh (crotch)
  4. Now ask someone to help you measure the inseam from the book to the floor and record the measurements in inches or centimeters.

2) The Type of Bike You Want

The next thing you need to understand is the type of bike that you would like to buy. It is important to understand that every bike is designed differently.

Different categories of bikes have different sizes, so you need to know your needs to determine the right size for you.

And since different manufacturers have their special sizing charts, it shouldn’t be difficult to choose the right bike for you, provided you know the value of your inseam.

How to determine bike size

There’s no one-size-fits-all formula for determine a bike’s size. However, you can use any of the three methods below to decide the bike size to choose.

  • Rider’s height/bike size
  • Calculating the size of the bike
  • Using a bike sizing chart

1. Your Height/Bike Size 

This method is quite simple, so it’ quite straightforward. You need to understand your height to choose a bike with the right frame size. Below is a summary of this concept in point form.

  • 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

2. Calculating the size of the bicycle

Some people think that this technique is a pain in the ass and quite difficult to master. And if you do not like math, this might not even make sense. But then again, the mathematical concept here is quite simple and downright fun.

First, you will need to know your leg inseam. You can use the methods that we have outlined above to get your inseam measurements in inches or centimeters.

The second step is to determine frame size of the best bike to purchase, and this depends on the type of the bike in question.

  • City bike: inseam (centimeters) x 0.685 = frame size
  • Mountain bike: inseam (centimeters) x 0.66 = frame size
  • Road bike: inseam (centimeters) x 0.70 = frame size

3. Using a bike sizing chart

This is often the simplest method of determining the correct bike size. We have provided the bike-sizing chart for different categories of bikes below.

How to measure the bicycle size for kids

More often than not, we use frame size as a reference point when determining the size of the bike. But according to Ice Bike, this concept isn’t often fit when it comes to choosing the best bike for kids.

According to the sturdy, a good option would be to use the diameter of a bike’s wheel, as it is the best option that helps to determine the proportion for the rest of the bike.

The best way to approach this without losing your mind to the mix, though, would be to use a sizing chart, which we have provided below for bikes with stabilizers as well as those without.

How to Measure a bike’s frame

You must choose a bike with the right frame. If you don’t, cycling will become hard and, eventually, you won’t get the best value for your money. If the frame is too big, you’ll lack the full drive.

And if the frame is cramped, you won’t get a full cycle. The result is minimal cycling power and difficulty in leg rotation. So make sure you measure the size of the frame before buying a bike.

This is quite an easy task. Simply stand over the frame of the bike with the two feet on a very flat ground.

If the distance between the frame and your crotch is about an inch, then the bike should be a good choice – as long as it is a racing, hybrid, or touring bike.

If you intend to buy a mountain bike, make sure the distance between the crotch and the frame is a little bit bigger than an inch.

Bike Size Charts

Kids Bike Size Chart Guide

Kids’ bikes with stabilizers offer stability during cycling, but the rider does not necessarily have to reach the ground. However, they should be able to get on and off the bike with ease and safely.

Rider Age

Inside Leg

Suggested Size

Years

Ins

cm

Frame

Wheel

2 to 4

14

36

-

12"

3 to 5

16

41

-

14"

4 to 6

18

46

-

16"

5 to 8

20

51

11"

20"

5 to 8

21

53

12"

20"

5  to 8

22

56

13"

20"


Bikes without stabilizers are for kids that have already progressed from using bikes with stabilizers. Because the bikes are low enough, they make solid footing quite easy. 

Rider Age

Inside Leg

Suggested Frame Size

Years

Ins

cm

Frame

Wheel

4 to 6

19

48

-

16"

5 to 8

21

53

11"

20"

5 to 8

22

56

12"

20"

5 to 8

23

58

13"

20"

7 to 12

26

66

14"

24"

7 to 12

27

69

15"

24"

Hybrid & City Bike Size Chart

Hybrid and city bike have bigger frames for proper body positioning between the seat and the handlebars. We have a list of the top hybrid bikes you can buy today.

Rider Height

Inside Leg

Suggested Frame Size

ft & inch

cm

inch +/- 1

cm +/- 2.5

inch

cm

5.0+

152

28

71

15

38

5.2+

157

28

71

16

41

5.4+

162

29

74

17

43

5.6+

167

29

74

18

46

5.8+

172

30

76

19

48

5.9+

175

30

76

20

51

5.10+

177

31

79

21

53

6.0+

182

33

84

22

56

6.2+

187

34

86

23

58

Road Bike Size Chart

To get the right size for a road bike, please use the formula provided below. It’s a tested and proven approach, so it should help you to get a bike with the right frame size.

  • Lapierre & NeilPryde: Your Frame Size = Inseam (cm) x 0.62
  • Cannondale, Cube, LOOK, Pinarello & Scott: Your Frame Size = Inseam (cm) x 0.67

We have have reviewed the top road bicycles worth buying.

Here is a pro tip when choosing the correct frame size of a road bike:-

Mountain Bikes Bike Size Chart

Hard Trails

Choose a bike with a smaller frame if you are interested in a hard trail mountain bike. Such bikes handle cornering in demanding terrains with ease. They also make climbing quite easy.

Rider Height

Inside Leg

Suggested Frame Size

ft & inch

cm

inch +/- 1

cm +/- 2.5

inch

cm

4.10+

145

27

69

13

33

5.0+

152

28

71

14

36

5.2+

157

28

71

15

38

5.4+

162

29

74

16

41

5.6+

167

29

74

17

43

5.8+

172

30

76

18

46

5.9+

175

30

76

19

48

5.10+

177

31

79

20

51

6.0+

182

33

84

21

53

6.2+

187

34

86

22

56

6.4+

192

35

89

23

58

Full Suspension

These are the best mountain bikes for cyclists that love to ride on rough terrains, particularly because they provide more stability on high speeds.

Rider Height

Inside Leg

Suggested Frame Size

ft & inch

cm

inch +/- 1

cm +/- 2.5

inch

cm

5.4+

162

29

74

16

41

5.6+

167

29

74

17

43

5.8+

172

30

76

18

46

5.9+

175

30

76

19

48

5.10+

177

31

79

20

51

6.0+

182

33

84

20

51

6.2+

187

34

86

21

53

6.4+

192

35

89

22

56

6.0+

182

33

84

21

53

6.2+

187

34

86

22

56

6.4+

192

35

89

23

58


That’s all you need to know about bike sizing chart. If you follow this chart to a tee, you should be able to choose the right bike for your needs.

Leave a Reply 0 comments

Leave a Reply: