Ideal Weight Calculator Online Free
Ideal Weight Calculator
Ideal Weight Calculator
The ideal weight calculator estimates your target body weight range based on height, sex, and frame size. It applies several established formulas including Devine, Robinson, Miller, and Hamwi to give a range rather than a single fixed number.
Ideal Weight Formulas
Devine (Men): 50 kg + 2.3 kg x (height in inches above 60) Devine (Women): 45.5 kg + 2.3 kg x (height in inches above 60)
Robinson (Men): 52 + 1.9 x (in above 60). Robinson (Women): 49 + 1.7 x (in above 60). These formulas were developed for medication dosing, not fitness targets.
Ideal Weight Range by Height (Men)
| Height | Devine IBW | Healthy BMI Range |
|---|---|---|
| 5'6" (168 cm) | 67.6 kg / 149 lb | 52-70 kg |
| 5'8" (173 cm) | 72.1 kg / 159 lb | 55-74 kg |
| 5'10" (178 cm) | 76.7 kg / 169 lb | 59-79 kg |
| 6'0" (183 cm) | 81.2 kg / 179 lb | 62-83 kg |
| 6'2" (188 cm) | 85.7 kg / 189 lb | 66-88 kg |
Ideal Weight Range by Height (Women)
| Height | Devine IBW | Healthy BMI Range |
|---|---|---|
| 5'2" (157 cm) | 52.1 kg / 115 lb | 47-64 kg |
| 5'4" (163 cm) | 56.7 kg / 125 lb | 49-66 kg |
| 5'6" (168 cm) | 61.2 kg / 135 lb | 52-70 kg |
| 5'8" (173 cm) | 65.8 kg / 145 lb | 55-74 kg |
| 5'10" (178 cm) | 70.3 kg / 155 lb | 59-79 kg |
Why Ideal Weight Is a Range
Body frame size, muscle mass, bone density, and age all affect what a healthy weight looks like for an individual. A muscular person may exceed the IBW formula while still being lean and healthy. Use IBW as a reference point, not a precise target. BMI range and body fat percentage are often more meaningful metrics.
Frequently Asked Questions
What is my ideal weight for my height?⌄
Ideal weight formulas give a starting estimate. For a 5'8" man, most formulas suggest 69-79 kg (152-174 lb). For a 5'4" woman, the range is about 52-66 kg (115-145 lb). Your best weight also depends on muscle mass, frame size, and body composition.
What is the Devine formula for ideal body weight?⌄
For men: 50 kg plus 2.3 kg for each inch above 5 feet. For women: 45.5 kg plus 2.3 kg for each inch above 5 feet. A 5'10" man: 50 + (2.3 x 10) = 73 kg. A 5'6" woman: 45.5 + (2.3 x 6) = 59.3 kg.
Is ideal body weight the same as a healthy BMI?⌄
They are related but not identical. A healthy BMI of 18.5-24.9 corresponds to a range of weights for your height. IBW formulas estimate a single midpoint within or near that range.
Does ideal weight differ between men and women?⌄
Yes. At the same height, men have higher ideal weight estimates due to greater average muscle mass and bone density. Most IBW formulas set different starting values and per-inch increments for men and women.
What if I weigh more than my ideal body weight?⌄
IBW is a reference point, not a hard rule. If your BMI is in the normal range and your body fat percentage is healthy, you may not need to lose weight even if the number exceeds a specific IBW formula's output. Discuss your results with a healthcare provider.