Ideal weight: Robinson, Devine and Miller
Ideal weight is not one number but three formulas averaged: a 175 cm man is 68.9 kg Robinson, 70.5 Devine and 68.7 Miller, averaging 69.4 kg with a 65.2-73.5 kg range. Robinson, Devine and Miller were built for drug dosing, not beauty, and frame size moves the result. This calculator is built for fast, private, offline use in your browser. Every formula runs locally and is verified against official sources. You enter the key numbers, see the result instantly and check the steps.
TL;DR
- Each formula gives a weight from height and sex; the tool averages the three and shows range plus small, medium and large frame variants.
- Formulas: ideal = (Robinson+Devine+Miller)÷3
- Example 1: man, 175 cm — Formulas: Robinson 68.9, Devine 70.5, Miller 68.7 kg
How it works
Each formula gives a weight from height and sex; the tool averages the three and shows range plus small, medium and large frame variants. Start with clean data, keep the same units and follow the order in the formula. The tool does the arithmetic, you choose rate, period or factor. A second example with different numbers shows how the result scales.
The math
Man 175 cm: Robinson 68.9, Devine 70.5, Miller 68.7, averaging 69.4 kg with a 65.2-73.5 kg range. Woman 165 cm small frame: averaging 55.2 kg with a 51.9-58.5 kg range.
Three drug-dosing formulas averaged; the calculator adds range and frame variants.
Examples
Example 1: man, 175 cm
- Formulas: Robinson 68.9, Devine 70.5, Miller 68.7 kg
- Average: 69.4 kg
- Range: 65.2-73.5 kg
Example 2: woman, 165 cm, small frame
- Average: 55.2 kg
- Range: 51.9-58.5 kg
- Small frame sits at the low end
When to use it
✦ Gym target weight
Set a training target: average ideal weight plus healthy range for your height.
✦ Dosage context
Understand where dosing formulas come from: the same equations behind drug math.
⚠ Common mistakes
- One formula as truth: Robinson, Devine and Miller differ by kilos, use the average.
- Ignoring frame: large frames belong at the top of the range.
- Ideal vs healthy BMI: ideal weight is narrower than the 18.5-24.9 BMI band.
FAQ (7)
Man 175 cm ideal weight?
69.4 kg average (65.2-73.5 kg range).
Woman 165 cm?
55.2 kg average for a small frame (51.9-58.5 kg).
Which formula?
All three averaged: Robinson 68.9, Devine 70.5, Miller 68.7 for 175 cm.
What happens to my weight, height or other health data?
It never leaves your phone. BMI, BMR, body-fat — all computed on-device, no upload, no account. That's intentional for health data: you can check a BMI of 22.8 or a TDEE of 2,100 kcal without worrying about a server log. Closing the tab clears the form from memory.
Does it work offline at the gym or on a plane?
Yep. Once the page has loaded, the calculators are fully offline-first. I've used the pace and BMI tools in airplane mode between flights — no spinner, no retry, just instant numbers. Same for sleep cycles if you're planning a shift.
Can my doctor rely on these numbers?
They're solid estimates using published formulas (WHO for BMI, Mifflin-St Jeor for BMR, CKD-EPI for GFR) but they're not a diagnosis. Think of them as a conversation starter: good for tracking trends, but your GP or nephrologist should interpret GFR, heart age or pregnancy dates with labs and context. We link the sources at the bottom for that reason.
How can I share my result with a trainer or doctor?
Use 'Share Link' in the results panel. It builds a URL with your inputs — for example BMI 70kg/175cm — so they see exactly what you entered. No data is stored on our side, the link just carries the numbers.
Sources & References
⚠ Health Disclaimer
This tool provides estimates for informational purposes only and does not constitute medical, veterinary, or professional advice. Always consult a qualified healthcare professional before making decisions about your health or treatment.
How this calculator is maintained
This calculator is written and maintained by Davide Coronese, independent developer and founder of CalcTracker.
Methodology: every formula is checked against official publications and validated by an automated test suite before release. Health, tax and finance pages cite the exact sources they rely on.
Found an error? Contact us — verified corrections ship within 24 hours.