Are bike frames measured in cm?
Most manufacturers now measure the frame from the centre of the crank axle, to the top of the seat tube. Most road bikes are measured in centimetres (cm), whereas mountain bikes are generally measured using inches (in).
Will an 18 inch bike frame fit me?
In very general terms, an 18-inch bicycle is best for someone just under six feet in height, but factors like inseam length and the differences between bike manufacturers can all influence the fit.
How can you tell what size a bike is?
How to calculate a bike size? Measure your inseam!
- Stand close to a wall, your feet should be 6-8″ (15-20 cm) apart.
- Place a large, hardcover book between your legs – it will simulate the saddle.
- Mark where the book’s spine touches the wall.
- Measure the distance from that point to the floor – that’s your inseam.
Should you size up or down for bikes?
If you can reach them (or get close), you’re pretty flexible and might prefer a smaller size frame. If you find the riding position is a little bunched up you can extend it by replacing the stem. If you weren’t able to touch your toes (or even get close), then we recommend going for the larger size.
What does the size of a bike mean?
Bike frames are commonly measured in centimetres or inches representing the length of the seat tube. For example, a manufacturer may measure the seat tube length of a bike as 51cm, and then describe it is a small frame.