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Understand your body, fitness and daily health metrics — with plain-English explanations of every result.
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Convert Anything
Pick a measurement type, choose your units, and get an instant answer.
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Cooking Made Easier
Cooking for a different number of people? Every ingredient scales for you.
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Work out what a journey will cost before you set off.
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See what a salary really means per hour, per week and per month.
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BMI Calculator
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BMI Calculator
Check your body mass index, see where it sits on the scale, and get related numbers like healthy weight range and daily calorie needs.
What your BMI means
| Category | BMI | What it suggests |
|---|---|---|
| Underweight | Below 18.5 | Weight is lower than typical for your height. |
| Healthy weight | 18.5 – 24.9 | Within the range linked to lowest average health risk. |
| Overweight | 25 – 29.9 | Above the healthy range for your height. |
| Obesity | 30 and over | Well above the healthy range; worth discussing with a clinician. |
How it's calculated
In pounds and inches, multiply weight by 703 and divide by height squared. BMI is a screening number, not a diagnosis. It doesn't account for muscle mass, age, sex or where body fat sits.
Loan Calculator
Work out your monthly payment, see how much interest you'll pay, and find out how extra payments shorten the loan.
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