MariaFitness Calculators
Free fitness and health calculators for BMI, calories, body composition, exercise, running and more.
⚖️ Body & Weight
BMI Calculator
Calculate your Body Mass Index using height and weight.
BMR Calculator
Estimate the calories your body burns at rest each day.
TDEE Calculator
Estimate your daily calorie needs based on activity level.
Ideal Weight Calculator
Estimate a general healthy weight range from height.
Body Fat Calculator
Estimate body fat percentage from body measurements.
Lean Body Mass
Estimate lean body mass from weight and body fat.
🥗 Nutrition & Calories
Calorie Deficit Calculator
Estimate the theoretical daily calorie deficit for a weight-loss goal.
Macro Calculator
Estimate daily protein, carbohydrate and fat targets.
Activity Calories
Estimate calories burned during common activities.
🏋️ Exercise & Performance
Steps to Miles
Convert steps into an estimated walking distance.
1 Rep Max Calculator
Estimate your one-repetition maximum using the Epley formula.
Heart Rate Zones
Estimate five training zones based on age.
🏃 Running & Walking
Running Pace Calculator
Calculate average running pace from distance and time.
Steps Calories
Estimate calories burned from daily steps.
Weight Loss Calorie Target
Estimate a daily calorie target from maintenance calories.
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