bike sizing guide

Get your measurements

Before buying a bike, it’s important to know your height and inseam (in centimeters). Here’s a simple way to measure your inseam using the 3-step book method:

  1. Take off your shoes.
  2. Place a book vertically between your legs, pressing it up into your crotch. This simulates the saddle (or seat) of a bike.
  3. Use a tape measure to find the distance from the soles of your feet to the top of the book.

Note: The table below is a rough guide. Keep in mind that measurements can vary between bike manufacturers.

Height (cm) Inseam (cm) Frame size (cm) Frame size (e.g. Canyon)
150–160 <74 43–49 2XS
161–165 75–77 50–51 2XS
166–170 78–80 52–53 XS
171–175 81–83 54–55 S
176–180 84–86 56–57 M
181–185 87–89 58–59 L
186–190 90–92 60–61 XL
191–195 93–95 62–63 2XL
>196 >95 >64 3XL

Getting more specific information

Check with the manufacturer

  • Many manufacturers have size guides for specific models available online. It’s a good idea to check their website for more detailed recommendations.

Speak directly with the seller

  • Send the seller a direct message on buycycle and ask for a sizing reference for the bike you're interested in.

buycycle sizing recommendations

The sizing recommendation provided in the listing is a general guideline. We can’t guarantee the accuracy of these suggestions, as sizing can vary between models and brands. To make sure you’re getting the best fit, we recommend double-checking the bike's geometry and using online bike fit calculators. These tools will help you find the bike that fits you perfectly.