Road bikes and cyclocross bikes have a much sportier frame geometry and a longer seating tube. Mountain bikes with 26 inch, 27.5 inch and 29 inch wheelsare available in the same frame sizes. Frame size guide for road bikes & cyclocross. Your optimal frame size is independent of the wheel size. For this reason, the seating tube – and so also the frame size – is somewhat shorter. With Bike Fit Calculator: size my bike, you can get the right. Mountain bikes are generally designed to be more comfortable. Weve created this application for bicycle lovers, whether road or mountain, no matter. The measurement you will use depends on which measure is used for the bike, or rather which standard applies to the new bike.įrame size guide for mountain bikes (MTBs) Center-to-Top (C-T) is measured from the middle of the bottom bracket, but the upper endpoint is at the top of the seat tube.li>.Center-to-Center (C-C) is the distance from the middle of the bottom bracket, that is where the crankset is attached to the bike, up to the intersection of the seat tube and the top tube.The real question is, how would you prefer to measure the bike, since there are two standards: If you have no information about the size of your bike frame, all you need is a good, old-fashioned tape measure and you can measure it yourself. It usually also printed on the frame itself. Modern bikes are sold with a large amount of information, which should include the exact measurements of the frame. It is usually not necessary for you to measure the frame size yourself. Tip: To ensure you get the most accurate result possible, it is useful to get a friend to help. Your inside leg is the distance between the floor and the upper edge of the level. The level must stay horizontal while measuring. Holding the level with both hands (in front and behind your body), raise it up until it’s snug against your crotch, like you are sitting on a saddle. Hold a spirit level or similar (a book, for example) between your legs. To take this measurement you should stand with bare feet, upright with your back against a wall.

Bike frame geometry calculator