本文へスキップ
CalculatorGe

理想体重計算機

Estimate an ideal body weight for your height and sex using four classic formulas (Robinson, Miller, Devine and Hamwi), alongside the healthy BMI weight range.

情報提供のみを目的としており、医学的診断ではありません。推定値は集団ベースの計算式によるもので、個人には当てはまらない場合があります。健康に関する判断の前に医療専門家に相談してください。

以下のガイドはまだ日本語に翻訳されていないため、英語で表示しています。計算機自体はすべて日本語に対応しています。

この計算機の使い方

  1. Choose your units.
  2. Select your sex and enter your height.
  3. Compare the formula results with the healthy BMI range. They are reference points, not targets everyone must hit.

計算式

Each formula starts from a base weight at 5 feet (152.4 cm) and adds a fixed amount per inch above that height.

Devine (1974): men 50 kg + 2.3 kg/in; women 45.5 kg + 2.3 kg/in
Robinson (1983): men 52 + 1.9; women 49 + 1.7
Miller (1983): men 56.2 + 1.41; women 53.1 + 1.36
Hamwi (1964): men 48 + 2.7; women 45.5 + 2.2

Example

  1. Man, 175 cm = 68.9 in, i.e. 8.9 in over 5 ft.
  2. Devine: 50 + 2.3 × 8.9 ≈ 70.5 kg.
  3. Healthy BMI range at 175 cm: 56.7–76.3 kg.

よくある質問

Why do the formulas differ?

They were developed for different purposes (Devine for medication dosing, for example) from different populations. Their spread shows there is no single ideal weight.

Do these formulas account for muscle or frame size?

No. Athletes and people with a larger frame can be healthy well above these values. Body composition matters more than a single number.

Are they valid for short heights?

The formulas were designed for heights above 5 feet. Below that, results are extrapolated and less reliable.