Bicycle Wheel Diameter Calculator

Fat bike offset and some carbon rims require corrections prior to calculating the spoke length.

Bicycle wheel diameter calculator. Also take a look at our complete bicycle gear ratio chart below to see how your size compares to other gearing options. Dedicated to the craft of building bicycle wheels. Spoke calculator does not calculate length for straight pull spokes. We strive to help you get the information you need about pcd offset rims and all other wheel and tire data that you need for your vehicle.

To use the calculator below select a wheel and tire size from the table or enter the wheel and tire size in mm in the dia. Custom offsets play with specs below try different settings compare results. Have us build your wheel s by picking from one of our many packages. Our custom wheel program takes into account your bicycle type body weight and intended use.

Often front and rear wheel have different sizes therefore two wheels can be calculated and compared here. Pi π is equal to 3 14 and the circumference of a 29 inch tire is reached by multiplying 29 by 3 14. Etrto tire size l mm l cm inch 47 203 12x1 75 935 94 54 203 12x1 95 940 94 12 40 254 14x1 50 1020 102 14 47 254 14x1 75 1055 106 40 305 16x1 50 1185 119 47 305 16x1 75 1195 120 16 54 305 16x2 00 1245 125 28 349 16x1 1 8 1290 129 37 349 16x1 3 8 1300 130 32 369 17x1 1 4 369 1340 134 40 355 18x1 50 1340 134 47 355 18x1 75 1350 135 18 32 406 20x1 25 1450 145 35 406 20x1 35 1460 146 40 406. See the spoke length calculation help page for specifics.

And since we ve already shown you how to calculate the diameter you can easily know the circumference of your bike tire by multiplying the diameter by pi. This spoke calculator is an accurate and easy to use tool to calculate the correct spoke length for your wheel builds. This is the ultimate in custom wheel configuration. Another formula for calculating the circumference is.

These packages have been. This allows our program to make recomendations such as rims hubs spokes and nipples. Simple just divide your rear cog size from your front chainring size. It will automatically calculate the estimated circumference in mm used by most new cycle computers cm used by some cycle computers inches maybe used by some and mph which is a number used by some sigma computers which don t automatically convert mm when you want to view your speed in mph instead of kph.

If you know their numbers just input them below and we ll calculate it automatically for you. This guide is accurate and is updated on a daily basis. If you have an account you ll be able to save your wheel builds and add new hub and rim models for all users to use. Information will open in a new tab.

Please enter for one wheel or both wheels distance or revolutions and radius diameter or circumference. Do you want to log in or create an account. Rim tire size calculator. Calculator for the number of revolutions of a wheel at a certain distance or for the distance for cars bicycles and other vehicles.

Note all products are located in this program wheel packages.