Bike Computer Wheel Size Calculator

Given rim diameter the iso diameter and tire diameter the size of your tire converted to millimeters wheel diameter rim diameter tire diameter 2.

Bike computer wheel size calculator.

Appropriate calculations will yield calibration numbers for computers in other groups. Input this number as the wheel size in your sigma computer. If your computer asks for radius divide your result by 6 2832 to obtain that value. To get an approximate diameter in mm add the bead seat diameter to twice the tire width since the tire depth comes into the diameter twice.

Calculate your result by 2 54 to get centimeters and 25 4 to get millimeters if your tape measure uses inches. To get the approximate diameter of the wheel with the tire on you would take the diameter of tire x 2 because it s both on the top and bottom the diameter at the rim pi 3 14 to get the cimcuference. Measure the height of the wheel from top to bottom with your millimeter tape. Tire size calculator 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.

I ll calculate the best chainring cog combinations and skid patches for your speed and cadence and what your speed will be at various cadences. E city bikes e touring bikes e mountain bikes etc. We can still help you find the right frame size. Using a bicycle computer on a scooter or go kart.

Is the value to enter into the bicycle computer for the wheel circumference or perimeter size. Multiply this by pi 3 142 to get the circumference in mm 2130. 622 28 x 2 678. Some bike computers require you to input tire size in centimeters while others use millimeters.

Tire size chart to get accurate results from a speed sensor like the wahoo rpm speed or blue sc input your wheel circumference in the wahoo fitness app. An accurate speed sensor can also improve the accuracy of gps bike computers like the elemnt elemnt roam and elemnt bolt especially in tree cover or near buildings. It will automatically calculate the estimated circumference in mm used by most new cycle computers cm used by some cycle computers. Wheel circumference wheel diameter pi.

Multiply the height by 3 14 on your calculator. Lay the millimeter tape on the ground. A bicycle computer can be used on an electric scooter or go kart if the correct wheel size is programmed into it.