Understand your body's energy needs. Calculate your Basal Metabolic Rate (BMR) and estimate total daily calorie requirements based on your activity level with 100% privacy.
๐ฅ Launch BMR Tool โ โก Precise Metabolism Math โข ๐ 100% Private โข ๐ Personalized ResultsDiscover exactly how many calories your body burns at rest to maintain vital functions like breathing and circulation.
Your health metrics are personal. All calculations happen locally in your browser, ensuring your age, weight, and height data are never uploaded.
Factor in your lifestyleโfrom sedentary to extra activeโto find your Total Daily Energy Expenditure (TDEE) for better fitness planning.
Use your BMR and TDEE results to set realistic calorie targets for weight loss, maintenance, or muscle gain.
Input your gender, age, current weight, and height into the calculator.
Select how much you move daily to calculate your total calorie needs beyond rest.
Instantly see your BMR and daily calorie targets tailored to your specific physiology.
Determine your maintenance calories and create a safe, effective deficit without compromising your metabolic health.
Ensure you are eating enough to support training and recovery by calculating your surplus needs based on baseline metabolism.
Understand how factors like age and activity impact your energy needs to make informed nutrition and lifestyle choices.
We value your medical privacy. Our BMR tool runs purely in your browser's RAM; no measurements or personal stats are ever logged or sent to a server.
BMR is the minimum number of calories your body needs to function while at rest. It accounts for about 60-75% of your total daily energy expenditure.
Our tool uses the scientifically recognized Mifflin-St Jeor Equation, which is currently considered the most accurate standard for healthy adults.
It is best to recalculate whenever you have a significant change in weight (e.g., every 5-10 lbs) or a major shift in your daily activity levels.