Tutorial 4 of 15
Use the health calculators
BMI, daily calories, healthy weight, body fat, and unit conversion — each one is a few taps on the same keypad, with results you can copy, save, or send.
BMI
- 1Open the Calculator page and choose BMI Calculator
- 2Pick your units first — kg or lbs for weight, cm or ft and in for height. Your first tap brings the calculator into focus
- 3Press Weight, type it on the keypad, and press Enter
- 4Height: press feet, then inches
- 5Your BMI and its category show as soon as both are in, with a marker on the scale
- 6Copy puts the result on your clipboard, Image saves it as a picture, and Share sends both
- 7Click outside it — or press Esc, or Close on a phone — to put it back in the page
Watch
BMI
Weight and height in, BMI and category out — then shared as a message.
Daily calories
- 1Choose Calorie Calculator
- 2Press Age and type it on the keypad, then choose your sex
- 3Enter your weight and height the same way — units switch beside each
- 4Pick the activity level closest to your week
- 5Daily needs: calories per day, with your BMR and a protein target
- 6Weight goals: calories for fat loss, lean gain, and bulk. Press the card to copy them
Watch
Daily calories
Your daily calories, BMR, protein, and calories for each weight goal.
Healthy weight
- 1Choose Healthy Weight
- 2Enter your age, sex, height, and current weight
- 3Activity level and an ethnicity adjustment — some groups use a different healthy BMI range
- 4Your current BMI and the healthy weight range for your height
- 5Health targets: the BMI midpoint and a maximum waist size. Press the result to copy it
Watch
Healthy weight
The healthy weight range for your height, and the targets inside it.
Body fat
- 1Choose Body Fat — the US Navy tape-measure method
- 2Choose your sex — women add a hip measurement
- 3Enter your height and weight
- 4Measurements: your waist (men at the navel, women at the narrowest point above it) and your neck, just below the larynx
- 5Your body fat percentage, where it falls, and your lean and fat mass
Watch
Body fat
A tape measure and two numbers — body fat, lean mass, and fat mass.
Unit converter
- 1Choose Unit Converter
- 2Pick what you're converting: weight, volume, or concentration
- 3Press the value and type it on the keypad
- 4Choose the units to convert from and to — the swap button reverses them
- 5The answer shows right away — press it to copy
- 6The info button explains each step
Watch
Unit converter
Milligrams to grams, and back, in a few presses.
Good to know
Daily calories use the Mifflin-St Jeor equation for BMR, multiplied by your activity level.
BMI is a screening number — the calculator notes it may not reflect health for athletes or people with a lot of muscle.
Nothing you enter is saved; closing the page clears it.