Running is a simple sport, but it does require a bit of math. These free, easy-to-use, online calculators will help out with that.
Determine your age-graded score for any running race distance and calculate equivalent times at other distances from 100 meters to 100 miles.
Ever wonder how many calories you burned on your run? Use this calculator to find out. It takes into account your body weight.
Use this pace calculator to easily find your time, pace, or distance for any run. Enter two of the three to calculate the third.
This tool tells you how many days (and weeks) are left until your race. It also tells you when you should start training.
Quickly go from MPH to minutes per mile or minutes per mile to MPH. (Or kilometers.) Includes an easy-to-use online calculator and tables.
If you start your run without your GPS watch having satellites fully acquired, it’ll record incorrect data. This calculator helps you figure out what that data should have been.