Health & Fitness

Simple, evidence-based health numbers with the formula shown and an honest explanation of what the result does and doesn't mean.

BMI CalculatorYour body mass index, category, and the healthy weight range for your height.BMR CalculatorThe calories your body burns at rest, and what you need at every activity level.Calorie CalculatorDaily calories to maintain, lose or gain weight at a sensible rate.Body Fat CalculatorEstimate your body fat percentage from tape measurements, US Navy method.Ideal Weight CalculatorThe healthy weight range for your height, and what four classic formulas say.

Reading these together

BMI tells you where your weight sits for your height, but it can't tell muscle from fat — that's what the Body Fat Calculator is for. BMR is what you'd burn lying still all day, and the Calorie Calculator takes that figure and adds your activity to reach the number you actually eat to. Start with BMI for a quick bearing, or with BMR if you're planning meals. All of them are population averages rather than a diagnosis, so a doctor who knows your history beats any of them.