Ideal Weight Calculator
Sex and height produce a main result in kilograms from the Devine formula. The detail line also shows Robinson and a BMI 18.5 to 24.9 weight range.
How to use
- Set Sex to Male or Female.
- Enter Height (cm). A height under 100 cm is rejected.
- Click Calculate. The result is whole kilograms labeled Devine. The detail line shows Robinson in kilograms and a BMI range in kilograms.
When it helps
The three figures show that "ideal" depends on which old formula you quote. Devine is 50 plus 2.3 times inches over 5 feet for men, and 45.5 plus 2.3 times those inches for women. Robinson is 52 plus 1.9 for men and 49 plus 1.7 for women, on that same inches-over-5-feet term. The range is the weight at BMI 18.5 and at BMI 24.9 for the height you typed.
If you already have a weight, the BMI calculator places it in a category. If the next question is calories, the calorie calculator asks age, weight, and activity, which this form never collects.
Limits
These kilogram figures are estimates from old statistical formulas, not a diagnosis and not a weight you must hit. A height under 100 cm stops the run and the result says Enter height.
Inches over 5 feet cannot go below zero here, so from 100 cm up to 5 feet the Devine and Robinson bases stay put: 50 or 45.5 in the formula, and 52 or 49. Displayed weights are rounded to whole kilograms, so the female Devine base shows as 46 kg. The page does not ask age, frame, or muscle, and it does not tell you to lose or gain.
Questions
Which number is the main result?
Devine, rounded to a whole kilogram. Robinson and the BMI 18.5 to 24.9 span stay on the detail line.
Why does a shorter adult get the base weight?
The inches-over-5-feet term is zero when height is under 5 feet. Heights under 100 cm are rejected instead.
Is the BMI range my current BMI?
No. It is a kilogram span for this height only. The page does not know your weight, so it cannot score you.