Mifflin–St Jeor BMR Calculator
Resting energy via the equation the Academy of Nutrition and Dietetics rates most accurate for modern adults.
Mifflin–St Jeor (1990) was fitted on a modern population and validation reviews found it predicts measured resting energy within 10% more often than older equations — which is why dietetics bodies recommend it first. It estimates energy at complete rest; daily needs are higher (see the TDEE tools).
Formula
For general information only — not medical advice, a diagnosis or a treatment plan. Consult a qualified healthcare professional before making health, diet, medication or exercise decisions.
Resting energy via the equation the Academy of Nutrition and Dietetics rates most accurate for modern adults. The Mifflin–St Jeor BMR Calculator is a free, private mifflin st jeor tool — every result computes instantly in your browser with no sign-up and no data upload.
About Mifflin–St Jeor BMR Calculator
Mifflin–St Jeor (1990) was fitted on a modern population and validation reviews found it predicts measured resting energy within 10% more often than older equations — which is why dietetics bodies recommend it first. It applies BMR = 10W + 6.25H − 5A + 5 (M) / − 161 (F). Use the Mifflin–St Jeor BMR Calculator to get an instant, clearly-explained result with the working shown step by step — free, private and with the source method cited.
How to use Mifflin–St Jeor BMR Calculator
- 1Enter your details in the Mifflin–St Jeor BMR Calculator input fields above.
- 2The result updates instantly with the working and reference bands shown.
- 3Adjust any value to explore how it changes the outcome — it's free and unlimited.
Why use Mifflin–St Jeor BMR Calculator?
- ✓Instant mifflin st jeor result that recomputes as you type — no waiting, no page reloads
- ✓100% client-side: your health data never leaves your browser
- ✓Shows the actual formula and your numbers substituted in, so you can see exactly how the result is reached
- ✓Based on published, citable sources (Mifflin MD et al., Am J Clin Nutr 1990;51:241-7)
- ✓Free forever with no sign-up, account or app install
Frequently asked questions
How does the Mifflin–St Jeor BMR Calculator work?+
Mifflin–St Jeor (1990) was fitted on a modern population and validation reviews found it predicts measured resting energy within 10% more often than older equations — which is why dietetics bodies recommend it first. The calculation uses the formula: BMR = 10W + 6.25H − 5A + 5 (M) / − 161 (F). Everything runs instantly in your browser as you type — your inputs are never uploaded.
Is the Mifflin–St Jeor BMR Calculator accurate, and what is it based on?+
The method is traceable to authoritative sources, including Mifflin MD et al., Am J Clin Nutr 1990;51:241-7; Frankenfield D et al., J Am Diet Assoc 2005 — comparative validity review. Results are estimates — individual variation always applies, so treat the output as a well-grounded starting point.
Is the Mifflin–St Jeor BMR Calculator free and private?+
Yes. It's completely free with no sign-up, and all computation happens locally in your browser, so none of your health data ever leaves your device.
Can I use this for medical decisions?+
This tool is for general information only and is not medical advice. Always consult a qualified healthcare professional before making health decisions.
What can I use the Mifflin–St Jeor BMR Calculator for?+
It's commonly used for mifflin st jeor, bmr calculator, resting metabolic rate. Resting energy via the equation the Academy of Nutrition and Dietetics rates most accurate for modern adults.
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