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BMI calculator for adults
Work out your body mass index and see the healthy weight range for your height.
Your result
Enter your details to see your result.
This calculator is not a medical or health product and does not replace advice from a doctor or dietitian. For health concerns, eating disorders, or special dietary needs, please talk to a qualified professional. Nutrition values are for general guidance, not medical advice.
How it works
BMI is your weight in kg divided by your height in meters squared. The WHO groups for adults: under 18.5 underweight, 18.5 to 24.9 healthy weight, 25 to 29.9 overweight, 30 and above obesity.
BMI cannot tell muscle from fat. The waist-to-height ratio adds more detail: under 0.5 means no increased risk, 0.5 to 0.59 an increased risk and 0.6 or more a high risk.
Sources
Healthy weight by height
The weights with a BMI from 18.5 to 24.9.
| Height | Healthy weight |
|---|---|
| 150 cm (4 ft 11 in) | 42 kg (93 lb) to 56 kg (123 lb) |
| 155 cm (5 ft 1 in) | 44 kg (97 lb) to 60 kg (132 lb) |
| 160 cm (5 ft 3 in) | 47 kg (104 lb) to 64 kg (141 lb) |
| 165 cm (5 ft 5 in) | 50 kg (110 lb) to 68 kg (150 lb) |
| 170 cm (5 ft 7 in) | 53 kg (117 lb) to 72 kg (159 lb) |
| 175 cm (5 ft 9 in) | 57 kg (126 lb) to 76 kg (168 lb) |
| 180 cm (5 ft 11 in) | 60 kg (132 lb) to 81 kg (179 lb) |
| 185 cm (6 ft 1 in) | 63 kg (139 lb) to 85 kg (187 lb) |
| 190 cm (6 ft 3 in) | 67 kg (148 lb) to 90 kg (198 lb) |
| 195 cm (6 ft 5 in) | 70 kg (154 lb) to 95 kg (209 lb) |
| 200 cm (6 ft 7 in) | 74 kg (163 lb) to 100 kg (220 lb) |
Questions & answers
What does BMI mean?
BMI stands for body mass index. It compares your weight with your height: weight in kg divided by height in meters squared.
What is the WHO?
The WHO is the World Health Organization, part of the United Nations. Its BMI groups for adults are used around the world.
Is BMI calculated the same way for everyone?
Yes. The formula and the groups are the same for all adults.
What does BMI not show?
BMI cannot tell muscle from fat, and it does not show where fat sits. Very muscular people can have a high BMI and be perfectly healthy. The waist-to-height ratio adds more detail.
Can I use this for children?
No. Children and teens are measured with special growth charts. Please ask a pediatrician.
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