**To fill out the form:**you could try entering minutes, kilometers, sex, age, kilograms and centimeters.**To calculate time:**you need to enter pace and distance.**To calculate pace:**you need to enter time and distance.**To calculate distance:**you need to enter pace and time.**To calculate points:**you can enter distance; or time and pace.**To calculate pace per kilometer:**you can enter pace per mile; or time and distance.**To calculate pace per mile:**you can enter pace per kilometer; or time and distance.**To calculate category:**you need to enter sex and age.**To calculate grade:**you need to enter sex and age.**To calculate classification:**you can enter pace and category; or time, distance and category.**To calculate Body Mass Index:**you can enter kilograms and centimeters.

**Note 1:** you can calculate all fields from others except **sex**, **age** or **centimeters**.

**Note 2:** all **classifications** are based on the RoadRunners Classification List, so some distances will not have a classification.

**Note 3:** all **points** are based on the AthleteAPI Race Points List, so some distances will not be awared points.

**Note 4:** all **grades** are based on the World Records List, so some distances will not be awared grades.

**Note 5:** because the ratio of miles to kilometers is irrational, appropriate rounding occurs.