Ideal weight calculator
Your ideal weight according to classic medical formulas, compared with the BMI range.
How it works
Lorentz: H − 100 − (H − 150)/4 (men) or /2.5 (women). Devine: 50 (or 45.5) + 2.3 × (inches over 5 feet). These are guides, not targets to hit at all costs.
Results are for guidance only and do not replace professional advice.
Worked example
With the default values:
- Height (cm)175
- SexMale
you get:
- Ideal weight (Lorentz)68.8 kg
- Devine70.5 kg
- Robinson68.9 kg
- Normal BMI range (18.5 – 25)56.7 – 76.6 kg
Frequently asked questions
How does the “Ideal weight calculator” tool work?
Lorentz: H − 100 − (H − 150)/4 (men) or /2.5 (women). Devine: 50 (or 45.5) + 2.3 × (inches over 5 feet). These are guides, not targets to hit at all costs.
What do I need to enter?
Just fill in: height, sex. The result updates as you type.
Can you give an example?
Height (cm): 175; Sex: Male → Ideal weight (Lorentz): 68.8 kg; Devine: 70.5 kg.
Is this calculator free, and is my data private?
Yes. HOD Calc is completely free with no sign-up. The calculation runs in your browser: nothing you type is sent or stored.