Fitness calculators
Fitness calculators help estimate body mass index, daily calories, running pace and approximate strength levels. Use them as simple planning tools, not as medical or coaching advice.
All in section
All calculatorsBMI calculator
Calculate body mass index from height and weight.
Calorie calculator
Estimate daily calories and macronutrients from body data and activity.
Running pace calculator
Calculate running pace, speed and race time predictions.
One-rep max calculator
Estimate one-rep max from weight and repetitions.
Choose a calculator in this section
Start with a popular calculator or browse the full list. For a different task, open a related category.
Popular calculators
New calculators
Other categories
FAQ
Is this medical advice?
No. Fitness and body metrics are general estimates. Ask a professional for medical or training decisions.
Can I use metric units?
Yes. The current calculators use metric inputs such as kilograms, centimeters and kilometers.
Are running predictions exact?
No. Pace predictions are estimates and depend on training, terrain, weather and recovery.
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