Health & Fitness Tools
Free, accurate calculators to help you track your health and fitness goals — no sign-up required.
Calorie Calculator
Find your daily calorie needs to maintain, lose, or gain weight.
BMI Calculator
Check your Body Mass Index and see which weight category you fall into.
TDEE Calculator
Calculate your Total Daily Energy Expenditure based on activity level.
Macro Calculator
Get a personalized protein, carb, and fat breakdown for your goals.
Body Fat Calculator
Estimate your body fat percentage using the US Navy method.
Ovulation Calculator
Estimate your most fertile days based on your cycle.
Due Date Calculator
Estimate your baby's due date from your last period.
Pregnancy Weight Gain Calculator
See the recommended healthy weight gain range for your pregnancy.
Calories Burned Calculator
Estimate calories burned during exercise based on activity and duration.
Protein Calculator
Find your daily protein target based on weight and goal.
One Rep Max Calculator
Estimate your one-rep max for any lift using the Epley formula.
Ideal Weight Calculator
Estimate your ideal body weight using the Devine formula.
Lean Body Mass Calculator
Calculate your lean body mass (everything except fat).
BMR Calculator
Find your Basal Metabolic Rate — calories burned at complete rest.
Target Heart Rate Calculator
Find your ideal heart rate zone for fat burning or cardio training.
Age Calculator
Find your exact age in years, months, and days from your birth date.