Health & fitness calculators
Free, no sign-up, metric and imperial. Each one uses a published equation and says which — so you can check the arithmetic rather than trusting a black box.
- BMI CalculatorYour body mass index, read against both the WHO cut-offs and the lower ones used for Indian adults.
- TDEE & BMR CalculatorHow many calories you burn in a day, and the target that follows from your goal.
- Body Fat CalculatorEstimate body fat, fat mass and lean mass from three tape measurements.
Which one do you need?
These three answer different questions, and it is easy to reach for the wrong one. BMI compares your weight to your height — a screening number, fast and crude, and the one worth starting with if you have no idea where you stand.
TDEE estimates how many calories you burn in a day. This is the number that matters if you intend to change your weight, because it sets the line you eat above or below. It is also the only one here that produces a target rather than a description.
Body fat tells you what your weight is made of. It takes a tape measure and five careful minutes, and it is the right tool when BMI and the mirror disagree — a muscular person reading as overweight, or a normal BMI with very little muscle underneath it.
A note on what calculators can and cannot do
Every calculator on this page applies a population equation to your measurements. That is genuinely useful — it beats guessing, and it gives you a defensible starting point. It is not a measurement of you specifically, and no equation using height, weight, age and sex can be.
The practical way to use them is as a hypothesis to correct. Take the number, act on it for two or three weeks, and let what actually happens adjust it. A TDEE estimate that turns out to be 200 calories high is not a broken calculator; it is the normal starting error, and correcting it is the whole method.
Then track against it
A target is only half of it. The Pulze food tracker estimates calories and protein from a plain-language description or a photo of your plate, and counts them against the target these calculators produce.
Open the food trackerThese calculators give estimates from published equations, not clinical measurements. This is general information, not medical advice — for decisions about your health, speak to a doctor or a registered dietitian.