Calculators to help you get fitter

14 tools matched to this goal.

Heart rate training zones using the Karvonen method.

Maximum heart rate from several published formulas.

Estimate aerobic fitness from the Cooper 12-minute run.

Estimate your max lift from a lighter set.

Calories burned for a run of any distance.

Convert your daily steps to distance and calories.

Pace per km and mile plus predicted race times.

Calories burned cycling by speed and time.

Compare calories burned across ten activities.

How quickly your pulse drops one minute after exercise.

Daily water needs for your weight, exercise and climate.

Build up your steps gradually toward a goal.

How much of your waking day you spend sitting.

How far along you are toward making a habit automatic.

Other goals

Train smarter by understanding the five zones and what each does.

Compare the common formulas and learn why they are only estimates.

Aerobic capacity is one of the strongest predictors of longevity.