Fitness & Health Calculators

Monitor your physical health metrics, energy balances, and steps conversions with our free, scientific, and responsive calculators.

Calculate your Body Mass Index (BMI) and discover your healthy weight range based on height and weight.

Determine your Basal Metabolic Rate (BMR) to understand how many calories your body burns at rest.

Calculate your Total Daily Energy Expenditure (TDEE) based on your activity level to optimize your nutrition.

Compute the perfect daily calorie deficit to hit your target weight-loss goals safely and sustainably.

Estimate your body fat percentage using the U.S. Navy circumference method with metric or imperial units.

Estimate your one-repetition max (1RM) for any lift based on the weight lifted and reps completed.

Find your personalized target heart rate zones for fat burn, cardio, and peak performance training.

Calculate your recommended daily water intake based on your body weight, activity level, and climate.

Find your ideal body weight using recognized scientific formulas: Devine, Robinson, Miller, and Hamwi.

Plan your macronutrient split (protein, fat, carbs) based on your daily calorie goal and dietary strategy.

Convert your daily steps count into distance traveled in kilometers using your estimated stride length.

Estimate how many active calories you burned from walking, based on steps, weight, and pace.

Convert your steps count into distance traveled in miles, based on customized height or stride settings.