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Calculate calories your body burns at complete rest.
⚛️ BMR = Basal Metabolic Rate. The minimum energy your body needs at complete rest.
BMR(Basal Metabolic Rate) is the number of calories your body burns at complete rest, just to keep you alive — breathing, circulating blood, maintaining body temperature. It accounts for 60-75% of the calories you burn each day.
This calculator uses the most accurate modern formula:
BMR is calories at complete rest. Your actual daily burn (TDEE) is BMR multiplied by an activity factor. Even light activity adds 20-40% on top of BMR. Use the Calorie Calculator if you want your full daily burn.
Disclaimer: This tool is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Results are estimates and should be discussed with a qualified healthcare provider before making health-related decisions.
The BMR Calculator lets you figure out bmr calculatorinstantly, without reaching for a spreadsheet or doing the math by hand. Whether you're planning a budget, checking a loan, or working through homework, the tool applies the correct formula behind the scenes and shows the result the moment you enter your numbers.
Unlike a static chart or table, this calculator adapts to your exact inputs. You can adjust any value and see the outcome update in real time, which makes it easy to compare scenarios — for example, "what if the rate were 1% lower?" or "what if I paid an extra $50 a month?"
Common uses: people reach for this tool when they need to find a bmr calculator mifflin st jeor, bmr harris benedict formula, resting calorie burn calculator, or bmr by age and gender.
Browser-based tools like this one have a few real advantages over installed software or manual methods:
The BMR Calculator is based on the following formula:
BMR(men) = 10W + 6.25H − 5A + 5 BMR(women) = 10W + 6.25H − 5A − 161
Variables: W = Weight (kilograms) H = Height (centimeters) A = Age (years) BMR = Basal metabolic rate, calories burned per day at rest (kcal/day)
Mifflin-St Jeor basal metabolic rate. W = weight (kg), H = height (cm), A = age. BMR is the daily calories burned at rest.
Worked example: Step 1: Man, 30 years old, 80 kg, 180 cm. Step 2: 10W = 800; 6.25H = 6.25 × 180 = 1,125; 5A = 150. Step 3: BMR = 800 + 1,125 − 150 + 5 = 1,780. Result: BMR ≈ 1,780 calories per day at rest.
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