Free Fitness Calculators for BMI, Calories, TDEE & Macros

Body Metrics

Understand your body composition and fitness estimates

2 tools

Calculate your Body Mass Index to understand if you're at a healthy weight.

Estimate your body fat percentage using the U.S. Navy method.

Nutrition

Plan your diet with precision using these nutrition tools

6 tools

Determine your daily calorie needs for weight loss, maintenance, or gain.

Calculate your ideal macronutrient ratios for your fitness goals.

Calculate your optimal daily protein intake based on your goals.

Estimate daily water intake from body weight and activity context.

Estimate your basal metabolic rate before daily calorie planning.

Find your Total Daily Energy Expenditure to know your maintenance calories.

Fitness & Performance

Optimize your training with performance calculators

1 tools

Estimate your one-rep max for strength training planning.

Next step

Want a Simple AI Plan?

Use the calculators for quick estimates, then get a CurieFit diet or workout plan tailored to your goal.