Calculate your BMI instantly from weight and height. Simple and TalkBack-ready.
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Calculate your Body Mass Index (BMI) in seconds: enter your weight and height and the result appears instantly, no "calculate" button needed.
• Classic BMI and Trefethen's new BMI, a formula that better fits very tall and very short people
• WHO weight categories, from severe thinness to obesity class III
• Healthy weight range for your height
• Metric (kg/cm), imperial (ft/lb) and stone units
• Adjust your weight with the +/– buttons without retyping it
• Send your result by email
• Fully accessible with TalkBack
• Works on phones, tablets, Chromebooks and Wear OS smartwatches; weight and height sync to your watch
A clean, simple BMI calculator that does one thing well.
Note: BMI is only an approximate indicator of body fat and is not a substitute for professional medical advice.