On this page
The goal weight formula
Goal weight (kg) = target BMI × height (m)²
Goal weight (lb) = target BMI × height (in)² ÷ 703
Example at 5 ft 10 in (70 in): 24.9 × 4,900 ÷ 703 = 173.6 lb, so about 174 lb.
How much is one BMI point?
| Height | One BMI point |
|---|---|
| 5 ft 4 in | 5.8 lb |
| 5 ft 10 in | 7.0 lb |
| 6 ft 0 in | 7.4 lb |
| 170 cm | 2.9 kg |
Taller people need to change more weight to move their BMI by the same amount.
Choosing a goal
- Any BMI from 18.5 to 24.9 is in the healthy range.1 A goal near the top of the range is just as valid as one in the middle.
- Smaller goals count. For people above the healthy range, the CDC notes that losing even 5 to 10% of body weight can improve blood pressure, cholesterol and blood sugar.2
- Gradual change lasts. The CDC notes that people who lose weight gradually, about 1 to 2 pounds a week, are more likely to keep it off.2
- Gaining weight is a goal too, for people under 18.5. A doctor can check for an underlying cause first.
Talk to a doctor before aiming to lose or gain a lot of weight, or if your BMI is under 18.5. When to see a doctor.
Frequently asked questions
How much weight do I need to lose to reach a BMI of 25?
Enter your height and current weight above, set the target to 25, and the calculator shows the difference.
What's a realistic goal?
That depends on your health, and a doctor or dietitian can help. Many people start with 5 to 10% of their current weight.
Should my goal be the middle of the healthy range?
Not necessarily. The whole range from 18.5 to 24.9 is considered healthy. Healthy weight for your height.
Sources
This page is for education and is not medical advice. Talk with a doctor or dietitian before setting a weight-loss or weight-gain goal.
