Size charts

Size guide for choosing your road bike

To calculate your road bike frame size, it is necessary to know your height and the size of your crotch. Once the measurements are taken, perform the following calculation and refer to the table below:
Crotch x 0,65 ≈ road frame size
Crotch x 0,885 = saddle height for the road (from the middle of the bottom bracket to the top of the saddle).

Size guide to choose your MTB

To calculate your MTB frame size, it is necessary to know your height and your crotch size. Once the measurements are taken, perform the following calculation and refer to the table below :
Crotch x 0,56 ≈ MTB frame size
Crotch x 0,88 = MTB saddle height (from the middle of the bottom bracket to the top of the saddle).

Road bike tire size conversion chart

Commonly, you will read the tire size of a road bike in the form (exemple : 700x25c) 700 is the size of the wheel (in this case this example corresponds to a standard wheel used by 99% of cyclists) and 25 is the tire width in mm.

For aesthetic and aerodynamic concerns, it is preferable to opt for a tire of the same width as the rim. In this regard, remember that once inflated, the tire can be one or two millimeters more than the size indicated by its expansion.

Recommended tires for road bikes : 700x23c for climbers (light and more aggressive relaunches), 700x25c for punchers and sprinters (the most common size), 700x28c for more comfort (generally used by endurance riders).

Recommended tires for gravel road bikes : from 35 to 42mm wide.

What are the correspondences in Inches / ETRTO / FR measurements / circumference?

How to choose your MTB tires?

Usually you will see MTB tire sizes as (exemple : 27.5 x 2.20") 27.5 is the size of the wheel and 2.20 is the width of the tire expressed in inches.

MTB tire standards

• The wheel size of an adult MTB : 26”, 27.5”, 27.5” Plus and 29”
• The different assemblies : Tubetype*, Tubeless Ready* and Tubeless*
• The maximum width allowable by the frame and fork of the MTB
• Folding and wired tires

MTB tire / rim width compatibility table

To choose the front tire, refer to the admissible fork dimension while for the rear tire you will need to know the admissible width in relation to the frame. Check this information on the manufacturer's documentation.

The width of the rim should also be taken into account.
Here is a table giving the compatibilities knowing that the most frequent widths are between 1.4 and 2.6 inches:

Cycling gloves size grid

Your glove size is determined by two measurements:
A - The width of the palm of the hand without the thumb
B - The length of your middle finger

Take the average of your two measurements, either : (A+B)/2. Then refer to the table. If you find a size in between, choose the one above.

Vest sizes / Back protector / Cycling bib shorts

MTB knee pads sizes

MTB Elbow pad sizes