Ideal weight: Robinson, Devine, Miller
Ideal weight formulas start from 152.4cm (5ft) and add per inch. Average ±6% reflects diversity better than one number. Pair with BMI. This calculator is designed for quick, private, offline use in your browser. All formulas run locally and are verified against official sources. You enter the core numbers, see the result instantly, and can check the steps, so you avoid the common mistake of applying a percentage to the wrong base or mixing units. Keep the inputs in the same unit system, verify the rate or factor for your country, and compare the result with a second example to catch typos before you save or file. Ideal weight formulas start from 152.4 cm (5ft) and add per inch over that, because taller frames carry more bone and muscle. Robinson adds 1.9 kg per inch for men, Devine 2.3 kg, Miller splits the di
TL;DR
- Robinson M 52+1.9×inch over 5ft F 49+1.7×inch, Devine 50+2.3×inch M etc, Miller median.
- Formulas: Robinson M:52+1.9×in | Devine etc | Avg ±6% range
- 170cm man — Robinson 65.8
How it works
Robinson M 52+1.9×inch over 5ft F 49+1.7×inch, Devine 50+2.3×inch M etc, Miller median. Average them for final, range ±6%. Start with clean inputs, keep the same units, and follow the order the formula shows. The tool does the arithmetic, but you decide the rate, period, or factor. A second example with different numbers shows how the result scales, which is the fastest way to spot a misplaced decimal or a monthly versus annual confusion before you act on the number. Ideal weight formulas start from 152.4 cm (5ft) and add per inch over that, because taller frames carry more bone and muscle. Robinson adds 1.9 kg per
The math
170cm man →65.8-66.0kg avg 65.9 range 62-70. 165cm woman avg 58 range 55-62.
Inch = cm conversion over 5ft. Frame ±5%.
Examples
170cm man
- Robinson 65.8
- Average 65.9
- Range 62-70
165cm woman
- Average 58
- Range 55-62
When to use it
✦ Screening
Quick healthy range.
✦ Dosing
Drug dosing weight.
⚠ Common mistakes
- Single number target
- Muscular builds exceed formula yet healthy
FAQ (6)
Best formula?
Average Robinson/Devine/Miller.
Frame?
Small -5%, large +5%.
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.