All tools
BMI and calorie calculator
Your BMI with healthy weights for your height, a child's BMI percentile, calories a day and body fat, each formula named, on your device. Free, with no account or uploads.
What do you want to know?
BMIBest for mostWeight for heightBody mass index and the healthy weights for your height; children's by age.Calories a dayBMR and TDEEThe energy your body uses at rest and in a day, and to lose or gain.Body fatFrom a tape measureBody fat by the US Navy's tape-measure method.
Measures
cm and kgfeet, inches and pounds
Your BMI
23.9
Healthy weight for an adult by the WHO's bands. At your height a BMI of 18.5 to 24.9 is 50.4 kg to 67.8 kg.
BMI does not tell muscle from fat, and athletes, older people and some groups are judged on other measures too.
This is arithmetic on your numbers, not medical advice; ask a doctor, nurse or midwife about your own health. Worked out in your browser; nothing you type is sent anywhere or kept.
A little help along the way
Follow these steps. Every option is explained underneath. Everything runs in your browser; nothing is sent anywhere or kept.
- Say what you want to knowBMI, calories a day, or body fat.
- Choose your measuresCentimetres and kilograms, or feet, inches and pounds.
- Type your age, height and weightAnd your sex for calories, body fat and a child's BMI; for body fat, your waist, neck and hips.
- Read the answerIn words first, with the formula it came from.
Every option explained
- Adults' BMI
- Weight in kilograms over height in metres squared, said against the WHO's bands, or the WHO's 2004 cut-offs for Asian populations under More options.
- Children's BMI
- From 2 to 19 years, the CDC's BMI-for-age percentile, with its 2022 extended percentiles above the 95th, as the CDC's own program works them out.
- Calories
- Resting energy by Mifflin–St Jeor (1990), times an activity level from the FAO/WHO/UNU report (2004); set an exact level and see grams of carbohydrate, protein and fat under More options.
- Body fat
- The US Navy's tape-measure method (Hodgdon and Beckett, 1984); an estimate that can be several points out.
- Not medical advice
- This is arithmetic on your numbers, not medical advice; ask a doctor, nurse or midwife about your own health.