Health & Fitness Calculators

Free health and fitness calculators for general information, from training numbers like your one-rep max and running pace to everyday health estimates. They are not a substitute for advice from a health professional.

13 calculators

• One Rep Max Calculator

  Estimate your one-rep max from any set and get training loads by percentage.

• Running Pace Calculator

  Find your running pace or finish time for any distance, in kilometers or miles.

• Steps to Miles Calculator

  Convert your step count to miles and kilometers using your height or step length.

• BMR Calculator

  Estimate your basal metabolic rate with the Mifflin-St Jeor equation.

• TDEE Calculator

  Estimate the calories you burn per day from your BMR and activity level.

• Calorie Calculator

  Estimate the calories a day to keep, lose, or gain weight gradually.

• Calorie Deficit Calculator

  See your daily calories with a moderate deficit and the approximate weekly change.

• Macro Calculator

  Split your daily calories into grams of protein, carbs, and fat.

• Protein Calculator

  Estimate how many grams of protein you need per day for your weight and activity.

• BMI Calculator

  Find your body mass index and WHO category, with its limitations explained.

• Body Fat Calculator

  Estimate your body fat percentage with the U.S. Navy tape-measure method.

• Ovulation Calculator

  Estimate your ovulation window from your last period. Not a method of birth control.

• Pregnancy Weeks Calculator

  Find how many weeks pregnant you are and your estimated due date.