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Size guide

Size chart (calculate your bike frame size)

Which frame size is right for you?

The right bike or e-bike size in 3 steps: measure your inseam, choose a bike type, calculate your frame size from height and inseam. Then go straight to matching bikes on Switzerland's largest bike marketplace.

Calculate my sizeGo to size chart
  1. 1Measure your inseam2 minutes, tape measure & book
  2. 2Choose bike type & calculateMountain bike, road bike, trekking, e-bike, kids
  3. 3Fine-tuning & test rideSize calculator, dealers, BikeMatch
Step 1

Bike frame size: how to measure your inseam

For frame height, your inseam (inside leg length) matters more than your height. Two people of the same height can have very different leg lengths.

  1. 1Take off your shoes and stand with your back against a wall, feet slightly apart (about 15 cm).
  2. 2Pull a book or spirit level up between your legs, held level and with gentle pressure, roughly where a saddle would sit.
  3. 3Measure from the floor to the top edge of the book. It's easiest with someone helping.
  4. 4Enter the value in centimetres in the calculator below.
Measure from the floor to the top edge of the book.
Step 2

Calculate your bike frame size

Every bike type has its own geometry. Choose your bike type and enter your measurements. We'll show you right away which size fits and which bikes are available.

Bike type
Height175 cm
90 cm210 cm
Inseam81 cm
40 cm105 cm

Estimated from your height. For a more accurate result, measure your inseam and set the slider.

Your recommendation · Trekking bikes
M
Frame height
approx. 53 cm
In inches
approx. 21"

Calculated from your inseam × 0.66 (rule of thumb for this bike type).

View bikes in size MBuy a bike in instalments

Guide values based on common rules of thumb (inseam × factor per bike type) and the BIDEX size chart. Manufacturers' sizes vary in places, so always check the geometry of the specific model as well.

Frame size by bike type

Frame size for road bikes, mountain bikes, e-bikes and kids bikes: detailed size charts, calculators and tips for every bike type.

Bike frame size chart by height

There's no standard size in the bike industry, and every manufacturer measures a little differently. TCS velocorner.ch uses the BIDEX size chart as a reference. Here you can see frame size as S, M, L, in inches and in cm.

HeightSizeFrame heightInchesListings
under 160 cmS42⁠–⁠47 cm16.5⁠–⁠18.5"View bikes
160⁠–⁠170 cmM47⁠–⁠50 cm18.5⁠–⁠19.5"View bikes
170⁠–⁠180 cmYour sizeM50⁠–⁠56 cm19.5⁠–⁠22"View bikes
180⁠–⁠190 cmL56⁠–⁠60 cm22⁠–⁠23.5"View bikes
190⁠–⁠200 cmXL60⁠–⁠65 cm23.5⁠–⁠25.5"View bikes
over 200 cmXXLfrom 65 cmfrom 25.5"View bikes
HeightRecommendedWheel sizeAge (guide)Listings
under 100 cm12"12"approx. 2⁠–⁠4 yearsView bikes
100⁠–⁠120 cm16"12", 14", 16"approx. 4⁠–⁠6 yearsView bikes
120⁠–⁠130 cm20"16", 18", 20"approx. 6⁠–⁠8 yearsView bikes
130⁠–⁠140 cm20"18", 20"approx. 8⁠–⁠10 yearsView bikes
140⁠–⁠150 cm24"20", 22", 24"approx. 10⁠–⁠12 yearsView bikes
from 150 cmXS/S26", 27.5"from approx. 12 yearsView bikes
Step 3

Fine-tuning: find the right model

Frame size is a starting point. Whether a bike really fits also depends on geometry, arm length and riding style.

Compare stack & reach

Stack (height) and reach (length) tell you more than frame size. The same size doesn't mean the same riding position. Compare the values in the listing or on the manufacturer's site. Arm length plays a part too: riders with long arms often feel better on a slightly longer frame.

Test ride at a dealer

Nothing beats a test ride. Bike dealers on TCS velocorner.ch advise you in person and set the bike up for you.

Dealers near you

BikeMatch

Still not sure which bike type suits you? BikeMatch finds the right bike for you in a few questions.

Start BikeMatch
For your dream bike

Check the size for a model: the bike size calculator

Found a bike you like? On many listings you can open the size calculator. As well as height and inseam, it takes your riding style, gender and arm length into account and shows the right frame size for that exact model.

  1. 1

    Choose riding style and gender

    Size calculator step 1: choose riding style

    Sporty, neutral or beginner: your riding style helps decide whether the larger or smaller size fits better.

  2. 2

    Set your height

    Size calculator step 3: set your height

    Use the slider to set your height in centimetres.

  3. 3

    Adjust inseam and arm length

    Size calculator step 5: adjust arm length

    The calculator suggests average values. If your legs or arms differ, measure them and adjust the values. How to measure your inseam.

  4. 4

    Get the frame size for the model

    Size calculator result: recommended frame size

    You get the recommended frame size for this bike and the range it can fall into depending on the manufacturer.

Choose a bike and check the sizeFor exact values, your bike dealer can help.

Frequently asked questions about frame size

With long legs and a short upper body, go for the larger size; with short legs, the smaller one. If you ride in a sporty, stretched position, size up; if you ride upright and playfully (e.g. on trails), size down.

Manufacturers measure frame height differently (to the middle or the top of the top tube) and give sizes in cm, inches or S/M/L. That's why we use the BIDEX size chart as a common reference.

Yes. For e-mountain bikes, calculate as for a mountain bike; for e-trekking and e-city bikes, as for a trekking bike. Step-through frames often come in fewer sizes but are more forgiving.

For kids bikes, wheel size in inches is what counts. Sitting on the saddle, the child should reach the ground with the balls of both feet. Don't buy one to grow into, because a bike that's too big unsettles children. More on the kids bike page.

Many manufacturers give frame size not in cm or inches but as S, M, L or XL. As a rule of thumb: S for 150–160 cm, M for 160–180 cm, L for 180–190 cm and XL for 190–200 cm height. So a size M bike fits most people between 160 and 180 cm.

28 inches is the wheel size, not the frame size. Most adult bikes run on 28 inch wheels, whether the frame is S or XL. So what counts for the right size is the frame height from the chart.

No. Frame size is calculated the same way for women and men, from height and inseam. A women's bike usually has a low step-over (mixte or step-through frame), which makes it a little more forgiving on size.

It's often printed on the seat tube, under the bottom bracket or in the manufacturer's documents. If you can't find it, measure the seat tube from the centre of the bottom bracket to the top of the tube. That's the frame height in cm.

Found your size? Now find your bike.

Thousands of new and used bikes & e-bikes, bought safely on TCS velocorner.ch.

Prefer to pay in instalments? Bike in instalments or e-bike in instalments, at 0% interest on selected offers.

View bikes in size M

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