Free fitness calculators, planners & performance tools — everything you need to train smarter.
Calculate your Body Mass Index and see where you fall on the scale
→Estimate body fat percentage using the US Navy method
→Find your optimal daily protein intake based on your goals
→Calculate how much water you should drink daily
→Find your daily caloric maintenance level
→Plan your caloric deficit or surplus for weight goals
→Calculate Total Daily Energy Expenditure
→Break down your calories into protein, carbs, and fat
→Calculate your five heart rate training zones
→Estimate your VO2 max from a run test
→Calculate pace, distance, or time for your runs
→Predict race times at different distances
→Generate per-mile or per-km splits for your race
→Convert steps to distance walked or run
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