Fitness Calculators
Free fitness calculators for runners and lifters: work out your running pace, finish time and race predictions, and estimate your one rep max.
2 Calculators
All Fitness Calculators
Fitness Calculators Explained
Numbers make training easier to plan. The Pace Calculator turns a distance and a time into your pace per kilometer and per mile, finds the finish time for a pace you can hold, or the distance you would cover in a set time, and shows what a 5K, 10K, half marathon and marathon would take at that pace. The One Rep Max Calculator estimates the heaviest weight you could lift once from a lighter set, using five well-known formulas, and gives you a table of training weights by percentage.
Both give estimates to guide your training, not guarantees. Conditions, fatigue and technique all change what you can do on the day. For body measurements and calorie needs, see our health calculators.
Popular fitness calculators include Pace Calculator and One Rep Max Calculator.
Frequently Asked Questions
Are the fitness calculators free to use?
Yes. Every fitness calculator on CalculatorEver is free, with no signup. The calculations happen in your browser, and the numbers you enter are not stored or sent to a server.
How accurate is a one rep max estimate?
It is a good guide when it comes from a set of 2 to 6 reps done close to failure. Estimates from high-rep sets are less accurate, and different exercises and different days give different results.
Can I use the pace calculator for walking or cycling?
Yes. Pace and speed work the same way for any steady activity, so you can use it to find the time a walk or a ride will take. The race times in the results are for running distances.
Where can I find my calorie needs or body fat?
The health category has a Calorie Calculator, a Body Fat Calculator, an Ideal Weight Calculator and a BMI Calculator.
