HelloCalcSabaiTH

Ideal Weight Calculator

Calculate ideal body weight for your height with the Devine, Robinson and Miller formulas, compared with the healthy BMI range.

Rough estimates for adults, not a medical diagnosis. Talk to a doctor or dietitian before changing your diet or exercise.

Sex
yrs
cm
kg
More details (optional) — for more accurate results
cm
cm
cm
%
bpm

Ideal weight

–kg

BMI (Body Mass Index)

–
Weight for a normal BMI
–

BMR (resting metabolism)

–kcal/day

TDEE (daily calories)

BMR from the chosen formula × activity level ()

–kcal/day (maintain weight)
Goalkcal/day

Body fat %

–
Fat mass
–
Lean mass
–

Waist-to-height ratio

–
Waist should not exceed
–

Add your waist (measured at the navel) under More details to see the ratio. The Thai guideline is a waist no more than half your height.

Daily water

–litres/day
From body weight ()
–
Extra for activity
–
Glasses of 250 ml
–

Includes water from food and other drinks. Drink more in hot weather or when sweating. People with kidney or heart conditions should ask a doctor.

Daily protein

–g/day
For your activity level
–
Per meal (3 meals)
–

Examples: 1 egg ≈ 6 g · 100 g chicken breast ≈ 31 g · 1 glass of milk ≈ 8 g · 100 g firm tofu ≈ 8–15 g

Max heart rate

–bpm

    How it works

    Choose your sex and enter your height to get your ideal weight with the selected formula, compared with the other formulas and the healthy BMI range. Add your current weight to see how far you are from it.

    Formula

    X = height in inches − 60 (height cm ÷ 2.54 − 60)

    Devine: men 50 + 2.3X · women 45.5 + 2.3X

    Robinson: men 52 + 1.9X · women 49 + 1.7X

    Miller: men 56.2 + 1.41X · women 53.1 + 1.36X

    FAQ

    How is ideal weight calculated?

    The Devine, Robinson and Miller formulas use height and sex. They start from a base weight at 5 feet (152.4 cm) and add a fixed amount per inch above that. They were originally used in medicine to calculate drug doses.

    Why do the formulas give different results?

    Each was developed from different data, so treat the results as a range rather than one number, and compare with the healthy BMI weight range, which is wider and better for setting goals.

    Do they work for people shorter than 152 cm?

    These formulas are designed for people 152.4 cm or taller. Below that the results are too low, so use the healthy BMI range instead.

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