Ideal Body Weight Calculator
Calculates ideal body weight with the Devine formula from sex and height, using a base of 50 kg (male) or 45.5 kg (female) plus 2.3 kg per inch over 5 feet.
What this calculator does
The Ideal Body Weight Calculator estimates your result instantly from the values you enter, using standard health & fitness formulas. Calculates ideal body weight with the Devine formula from sex and height, using a base of 50 kg (male) or 45.5 kg (female) plus 2.3 kg per inch over 5 feet. Calculations run in your browser, so nothing you type is sent to a server, and the output is an estimate rather than a certified or official figure.
Result
About Ideal Body Weight Calculator
The Ideal Body Weight Calculator uses the Devine formula. It converts your height in centimetres to inches, then adds 2.3 kg for every inch above 60 inches (5 feet).
The base is 50 kg for males and 45.5 kg for females.
Formula & Mathematical Calculation
Ideal Body Weight (Devine) = f(Sex, Height (cm))
Calculated according to standard health formulas implemented in the calculator core.
Calculation Example
For a male of 175 cm, height converts to 175 ÷ 2.54 = 68.9 inches, which is 8.9 inches over 60.
Ideal body weight is 50 + 2.3 × 8.9 = 70.5 kg, so the tool reports an Ideal Body Weight (Devine) of about 70.5 kg.
Key Benefits
- Uses the established Devine ideal-body-weight formula
- Handles metric height input and converts to inches for you
- Uses separate base weights for males and females
- Returns a single clear figure in kilograms
How to Use this Calculator
-
Select sex
Choose Male or Female to set the base weight (50 or 45.5 kg). -
Enter height
Type your height in centimetres. -
Calculate
Select Calculate to see your Devine ideal body weight.
Assumptions & Limitations
What the calculation assumes
- Every value you enter is treated as an exact, known amount.
- Any rate or interval you enter is assumed to hold for the whole period unless the form asks for it separately.
- Results use standard published formulas and account only for the values entered above.
- Rounding is applied for display; the underlying calculation uses your full precision.
- Results are returned in the same units you enter, unless the tool states the output unit.
What it does not cover
- Ideal Body Weight Calculator produces a calculated result for reference and learning, not a certified or official measurement.
- Real-world outcomes differ when tolerances, rounding rules or local standards apply.
- Definitions and standards vary by region and change over time; verify the convention that applies to your case.
- Figures are only as accurate as the inputs you supply — check them before acting on the result.
- For work where the result carries real consequences, confirm it against an authoritative source.
Frequently Asked Questions
Free to use, no account needed. Calculations run in your browser, so nothing you type is sent to a server. Results are estimates — how we build and check our calculators.