Health & Fitness
Health and fitness calculators
Plan your nutrition and track key numbers with free BMI, calorie, macro, and pregnancy calculators. Private and instant — nothing leaves your browser.
BMI Calculator
Body mass index with category and healthy weight range.
TDEE & Calorie Calculator
Daily calories to lose, maintain, or gain weight.
TDEE & Macro Calculator
Calories plus protein, carb, and fat targets.
Macro Calculator
Personalized macro split for your goal.
Calorie Deficit Calculator
The deficit needed to reach your weight goal.
Bulking Calculator
Calories and macros for lean muscle gain.
Keto Macro Calculator
Keto macro split with net-carb tracking.
Pregnancy Due Date Calculator
Estimate your due date, weeks along, and trimesters.
Ovulation Calculator
Find your fertile window and ovulation dates.
Frequently asked questions
- Are these health calculators accurate?
- They use widely-accepted formulas such as Mifflin-St Jeor for calories and standard BMI ranges. They're great for planning, but they're estimates — consult a healthcare professional for medical decisions.
- Is my health data private?
- Yes. Every calculator runs in your browser. Your weight, height, dates, and other inputs are never uploaded or stored.
- What is TDEE?
- TDEE (Total Daily Energy Expenditure) is the total number of calories you burn per day, including activity. It's the baseline for planning weight loss, maintenance, or gain.