The best bike size guide 📐 ► What bike size do I need?
The right bike size is crucial when it comes to renting or buying a bike. In this article, we explain how you can determine the correct size of your bicycle in two easy steps. Whether mountain bike, road bike, gravel bike, city bike or e-bike, here you will find size charts for all types of bikes. We also give you useful tips and tricks on how to find the right bike size, so be sure to read on… 👇
- Measure your inseam to calculate the frame size
- Bike size chart ► Select bike type and frame size
- How to determine the bike size by body height?
- What to do if no bike size fits exactly?
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Measure your inseam to calculate the frame size
We recommend measuring the bike size by your inseam length. The inseam length provides more information than the body height. But it is also possible to use both measurements to find the right size. Bicycle sizes are given either in centimetres or in inches, below you will find charts with precise details. The next paragraph explains the best way to measure your inseam.
How to measure the inseam length?
Follow our instructions and measure your inseam length in just a few minutes. By the way – if someone helps you, it’s even easier 😉.
- Have a bicycle saddle or a book with a hard cover and a measuring tape ready
- To get an accurate result, wear only pants and measure barefoot
- Stand straight against a wall with pedal wide legs
- Take the saddle or book and imitate sitting on it. Do not bend your legs.
- Keep the saddle or book in this position, help is useful during this step.
- To complete the task, you only need to measure from the ground to the top edge of the saddle. Make sure to measure at the right angle.
Bike size chart ► Select bike type and frame size
You know your inseam length, but you don’t know which frame size fits to it? Select the chart that matches the bike type you want to buy or rent and use your inseam length to determine the appropriate bike size.
Road bike size chart
The road bike size chart applies to endurance road bikes, sporty road bikes, gravel bikes, cyclocross bikes, aero bikes, TT bikes, triathlon bikes, vintage road bikes, fixis, electric road bikes and fitness bikes inspired by road bikes.
| Inseam length in cm | Inseam length in inches | Frame size in cm |
|---|---|---|
| 70 cm | 27,5″ | 46 – 47 cm |
| 72 cm | 28,3″ | 47 – 48 cm |
| 74 cm | 29″ | 49 – 50 cm |
| 76 cm | 30″ | 50 -51 cm |
| 78 cm | 30,7″ | 51 – 52 cm |
| 80 cm | 31,5″ | 52 – 53 cm |
| 82 cm | 32,3″ | 53 – 54 cm |
| 84 cm | 33″ | 54 – 55 cm |
| 86 cm | 33,9″ | 55 – 57 cm |
| 88 cm | 34,6″ | 57 – 59 cm |
| 90 cm | 35,4″ | < 59 cm |
Mountain bike frame size chart
Die MTB Größentabelle betrifft alle Typen von Mountainbikes, darunter fallen Cross Country Bikes, Enduro Bikes, DH Bikes, E-Mountainbikes, Fat Bikes, All Mountain, Freeride Bikes und generell alle Arten von Hardtail & Fullys.
| Inseam length cm/inches | Frame size in cm | Frame size in inches |
|---|---|---|
| 70 cm / 27,5″ | 38 – 40 cm | 15″ |
| 72 cm / 28,3″ | 40 – 41 cm | 15″ -16″ |
| 74 cm / 29″ | 41 – 42 cm | 16″ |
| 76 cm / 30″ | 42 – 43 cm | 16″ – 17″ |
| 78 cm / 30,7″ | 43 – 45 cm | 17″ – 18″ |
| 80 cm / 31,5″ | 45 – 46 cm | 18″ |
| 82 cm / 32,3″ | 46 – 47 cm | 18″ – 19″ |
| 84 cm / 33″ | 47 – 48 cm | 19″ |
| 86 cm / 33,9″ | 48 – 50 cm | 19″ – 20″ |
| 88 cm / 34,6″ | 50 – 51 cm | 20″ |
| 90 cm / 35,4″ | < 51 cm | < 20″ |
E-bike size chart
The following chart refers to city bikes, trekking bikes, cargo bikes, pedelecs and fitness bikes.
| Inseam length in cm | Inseam length in inches | Frame size in cm |
|---|---|---|
| 70 cm | 27,5″ | 43 – 45 |
| 72 cm | 28,3″ | 45 – 46 |
| 74 cm | 29″ | 46 – 47 |
| 76 cm | 30″ | 47 – 49 |
| 78 cm | 30,7″ | 49 – 50 |
| 80 cm | 31,5″ | 50 – 51 |
| 82 cm | 32,3″ | 51 – 52 |
| 84 cm | 33″ | 52 – 54 |
| 86 cm | 33,9″ | 54 – 55 |
| 88 cm | 34,6″ | 55 – 57 |
| 90 cm | 35,4″ | < 57 |
How to determine the bike size by body height?
As an alternative to inseam length, you can also use your height to find your approximate bike size. Select the right table and choose the frame size according to your height. You can find size charts for road bikes, mountain bikes, city bikes and e-bikes.
Bike size chart ► road bike, gravel bike, aero bike & e-road bike
| Body height in feet | Frame size in cm |
|---|---|
| 5″1 – 5″5 | 48 – 51 |
| 5″5 – 5″7 | 51 – 53 |
| 5″7 – 5″9 | 53 – 55 |
| 5″9 – 5″11 | 55 – 57 |
| 5″11 – 6″1 | 57 – 60 |
| 6″1 – 6″5 | 60 – 62 |
| 6″5 – 6″8 | 62 – 64 |
Bike size chart ► E-MTB, Enduro, Hardtail, Cross Country Bike & DH
| Körpergröße in feet | Bike size MTB | Wheel size in inches |
|---|---|---|
| 4″11 – 5″1 | 33 – 36 cm (13″-14″ inch) | 26″ |
| 5″1 – 5″3 | 35 – 38 cm (14″-15″ inch) | 27,5″ |
| 5″3 – 5″5 | 38 – 40 cm (15″-16″ inch) | 27,5″ |
| 5″5 – 5″7 | 40 – 43 cm (16″-17″ inch) | 27,5″ |
| 5″7 – 5″9 | 42 – 45 cm (16,5″-17,5″ inch) | 27,5″ / 29″ |
| 5″9 – 5″11 | 44 – 47 cm (17,5″-18,5″ inch) | 27,5″ / 29″ |
| 5″11 – 6″1 | 46 – 49 cm (18″-19″ inch) | 27,5″ / 29″ |
| 6″1 – 6″5 | 49 – 52 cm (19″-20,5″ inch) | 27,5″ / 29″ |
| 6″5 – 6″8 | 51 – 56 cm (20,5″-22″ inch) | 29″ |
| < 6″8 | < 56 cm (< 22″ inch) | 29″ |
Bike size chart ► City bike, city bike, trekking bike & fitness bike
| Body height in feet | Frame size in cm |
|---|---|
| 4″11 – 5″3 | 42 – 48 |
| 5″3 – 5″7 | 48 – 52 |
| 5″7 – 5″9 | 52 – 55 |
| 5″9 – 5″11 | 55 – 58 |
| 5″11 – 6″11 | 58 – 61 |
| 6″11 – 6″5 | 61 – 63 |
| 6″5 – 6″8 | 63 – 65 |
| < 6″8 | < 65 |
What to do if no bike size fits perfectly?
You have measured your inseam length, looked at the charts but neither the one nor the other frame size fits exactly? Compare the inseam length table with the body height chart, if even this comparison does not give a clear result, there are two more tips.
Frame size tip for beginners
Are you a beginner cyclist and don’t know much about bike geometry and what it means to you? Don’t worry, there is a simple solution to get your dream bike. Bike fitters are the best people to contact if you cannot choose the right bike on your own. They will measure your body, choose the right bike and then fit it to you individually. Specialised bike shops also often offer this service.
Frame size tip for pros
On the Internet you can find data sheets with the exact geometry for almost every bike model. With a bit of know-how you can use the geometry to find out which size is best for you. For example, you can see whether the bicycle frame tends to have a longer top tube or a longer seat tube. The geometry can be influenced a little, for example by a shorter or longer stem or the saddle position.
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