Health & Fitness
BMR Cunningham Athlete Calculator
Estimate resting metabolic expenditure for athletes with the Cunningham lean-mass equation.
Preparing your result…
What this calculator does
Calculates BMR Cunningham Athlete Calculator using the formula verified against the cited source.
What your result means
An estimate from the inputs you enter, within the scope stated below — not advice.
Formula
RMR = 500 + 22 × lean body mass (kg)
The step-by-step working for your own numbers appears with the result above and in the PDF report.
Frequently asked questions
Symbols and assumptions
- Inputs
- The values entered in the fields above
- • Cunningham 1980 prediction: basal/resting energy kcal/day≈500+22×lean mass kg; with supplied fields lean mass≈weight kg×(1−body-fat percent/100).
Sources and review
Reviewed 2026-10-18 · Next review 2027-04-18
- • Original paper reanalyzed normal adults, not a universal athlete-only validation. Identify the 1980 version separately from the 1991 370+21.6 equation. Estimated body fat adds uncertainty; output is a prediction, not measured expenditure.
Important limitation
This is an educational estimate based only on the values and formula shown. Verify current rates, rules, units, and professional standards before relying on the result. It is not personalized financial or investment advice.
Quick reference
| Scenario | Body weight (kg) | Body fat (%) | Resting metabolic rate |
|---|---|---|---|
| Worked example | 80 | 12 | 2,048.8 kcal/day |
| Half the amounts | 40 | 6 | 1,327.2 kcal/day |
| Double the amounts | 160 | 24 | 3,175.2 kcal/day |
Need the full picture? Get the detailed PDF report with charts, tables, formulas and working steps.
Reviewed 2026-10-18 · Next review 2027-04-18
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