Health
BMR (Mifflin-St Jeor)
Calculate basal metabolic rate using the Mifflin-St Jeor equation and keep an eye on daily resting energy needs.
Mifflin-St Jeor BMR with quick kilojoule and per-hour breakdowns.
Mifflin-St Jeor BMR
BMR = 10w + 6.25h − 5a + s
Weight (w) and height (h) are metric, age (a) is in years, and s is +5 for males or −161 for females. The result estimates the calories your body burns at rest each day.
How to use
- Select gender so the correct constant is applied.
- Enter current age, weight (kg), and height (cm).
- Review the BMR value to plan maintenance or macro targets.
Example
Input: Female, Age = 28, Weight = 60 kg, Height = 165 cm
Output: BMR ≈ 1,351 kcal/day
Student-friendly breakdown
This walkthrough emphasizes the most searched ideas for BMR (Mifflin-St Jeor): bmr calculator, basal metabolic rate calculator, resting calorie calculator, bmr calculator for weight loss. Start with the formula above, then follow the guided steps to double-check your work. For quick revision, highlight the givens, plug into the equation, and finish by verifying your units.
Need more support? Use the links below to open the long-form guide, browse additional examples, or hop into adjacent calculators within the same topic — each one is a quick way to double-check your work or handle a related question without starting from scratch.
Deep dive & study plan
BMR (Mifflin-St Jeor): Calculates basal metabolic rate from gender, weight, height, and age. It's built around bmr, metabolism, resting calories, so you can go from a raw question to a checked answer without switching tools.
The math behind it: Weight (w) and height (h) are metric, age (a) is in years, and s is +5 for males or −161 for females. The result estimates the calories your body burns at rest each day. The core relationship is BMR = 10w + 6.25h − 5a + s, shown above the calculator so you can see exactly how your inputs turn into the result.
To use it well: (1) Select gender so the correct constant is applied. (2) Enter current age, weight (kg), and height (cm). (3) Review the BMR value to plan maintenance or macro targets. Keep your units consistent as you go, and re-run a case you already know the answer to — it's the fastest way to catch a typo before it throws off a result you're relying on.
Worked example: entering Female, Age = 28, Weight = 60 kg, Height = 165 cm returns BMR ≈ 1,351 kcal/day. Try swapping in your own numbers next, especially a case you're unsure about, before you use this for something that matters.
Quick retention checklist
- Speak the formula aloud (or annotate it) so the relationships stick.
- Write each step in your own words and compare with the numbered list above.
- Swap in new numbers for the Example to make sure the calculator (and your logic) handles edge cases.
- Check at least one related calculator below — it's the fastest way to confirm your numbers still line up from a different angle.
FAQ & notes
Does BMR include workouts or steps?
No. BMR reflects resting energy only; multiply it by an activity multiplier to estimate total daily energy expenditure.
Can I enter pounds and inches?
Convert pounds to kilograms (÷ 2.2046) and inches to centimeters (× 2.54) before entering them to keep the formula precise.
What formula does the BMR (Mifflin-St Jeor) use?
Weight (w) and height (h) are metric, age (a) is in years, and s is +5 for males or −161 for females. The result estimates the calories your body burns at rest each day.
How do I use the BMR (Mifflin-St Jeor)?
Select gender so the correct constant is applied. Enter current age, weight (kg), and height (cm). Review the BMR value to plan maintenance or macro targets.