Sports Calculators

Sports calculators to compute running pace, time, distance and other athletic metrics.

One Rep Max (1RM) Calculator

Calculate your one rep max (1RM) based on the weight lifted and number of repetitions using 5 proven strength training formulas. Free online tool.

Running pace calculator

Calculate your running pace, finish time, or distance. Enter any two values and get the third instantly. Supports km pace and speed.

Ski Size Calculator

Calculate the recommended ski length based on your height, weight, skiing ability and ski type. Free online ski size calculator.

TDEE Calculator

Calculate your TDEE — total daily energy expenditure based on weight, height, age, sex, and activity level. Get calorie goals for weight loss or gain.