Health calculators: BMI, calories, body fat

Free health calculators: BMI with Asian cut-offs, calories (TDEE and BMR), body fat, ideal weight, water intake, ovulation and pregnancy due date.

Health & fitness tools

BMI calculatorAsian cut-offs for IndiansPregnancy due dateDue date and week-by-weekCalorie calculatorTDEE and BMR for your goalBody fat calculatorUS Navy tape methodIdeal weight calculatorBy height, four formulasWater intake calculatorHow much to drink a dayOvulation calculatorFertile window and ovulation day

About these health calculators

Check your health numbers with free calculators based on published medical formulas. Find your BMI with the lower Asian cut-offs recommended for Indians, your daily calories with the Mifflin–St Jeor equation, body fat by the US Navy tape method, and your ideal weight by four formulas.

Plan a family with the ovulation calculator and pregnancy due date calculator, and see how much water you should drink each day.

These tools are for information only and don’t replace advice from a doctor.

Which health calculator should you start with? Start with the BMI calculator for a quick check of your weight for your height, then use the calorie calculator to set a daily target for losing, keeping or gaining weight. The body fat and ideal weight calculators add detail that BMI alone can miss. The pregnancy due date and ovulation calculators help with family planning, and the water intake calculator suggests a daily amount for your weight, activity and climate.

Which questions do these tools answer?

  • Is my BMI healthy for Indians?
  • How many calories do I need?
  • When am I most fertile?

Frequently asked questions

What is a normal BMI for Indians?

For Indian adults, 18.5 to 22.9 is normal, 23 to 24.9 is overweight and 25 or more is obese.

How is the pregnancy due date calculated?

Add 280 days to the first day of your last period (Naegele’s rule), adjusting for cycles longer or shorter than 28 days.