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This is the free version of the Bike Gear Calculator. This one does almost the same as the paid one. You can try and decide if you like it enough to p …

Calculate your bike speed with adjustable numbers for rotation per minute (RPM), Front Gear, Rear Gear, Wheel circumference (cm)免費玩Bike Gear Calculato …

Calculate the finish time of your running race while adjusting your steady pace running speed. This version metric style. Distances: 100m, 1km, 5km, 1 …