Smart Calorie & TDEE Calculator
Estimate your basal metabolic rate, daily energy needs, calorie target, and an illustrative macronutrient split.
Example daily dashboard
Example only. Your result depends on your information, activity, and goal.
What Is TDEE and Why Track Calories?
Total Daily Energy Expenditure, or TDEE, is an estimate of the energy your body uses in a typical day. It combines your estimated basal metabolic rate with your selected activity level. Understanding this estimate can help you create a structured starting point for nutrition planning.
TDEE Estimate
Combines estimated resting needs with your selected activity level.
BMR Analysis
Estimates the energy needed to support basic functions at rest.
Macro Breakdown
Shows an illustrative protein, carbohydrate, and fat split.
Goal Planning
Use the result as a starting point for a sustainable nutrition routine.
How to Use the Calculator
Enter your details, choose your units, select your activity level and goal, then review the estimate.
- Select the formula option that applies to you.
- Enter your age, weight, and height.
- Choose your usual activity level.
- Select whether you want to lose, maintain, or gain weight.
- Review the result as general planning information.
Calculate Your Calories
This adult calculator provides estimates. Your actual energy needs can vary over time.
Estimated daily calorie target
calories per day
Basal metabolic rate
--
kcal/day
Total daily energy expenditure
--
kcal/day
This estimate is unusually low for many adults. Do not use it as a personal prescription without qualified professional guidance.
Illustrative Macronutrient Breakdown
General Planning Ideas
Understanding BMR and TDEE
BMR
Basal metabolic rate is an estimate of the energy your body uses at rest to support essential functions.
TDEE
Total daily energy expenditure estimates your daily needs after applying an activity multiplier to your BMR.
How the Macro Estimate Works
The calculator displays an illustrative calorie split for protein, carbohydrates, and fat based on your selected goal. It is not a personalized dietary prescription, and your ideal intake can vary according to health status, preferences, training, and professional guidance.
Important Considerations
These calculations are estimates based on the Mifflin-St Jeor equation and an activity multiplier. Individual energy needs vary with genetics, body composition, hormones, daily movement, sleep, health conditions, and medication. Speak with a registered dietitian or healthcare professional for individualized nutrition advice.
Frequently Asked Questions
TDEE is an estimate of the energy you use during a typical day. It starts with BMR and applies an activity multiplier.
It is a population-based estimate, not a direct measurement. Actual energy needs can differ, so use the result as a starting point and watch how your body responds over time.
No. The number is an estimate and should not be treated as a medical prescription. Adjustments should consider hunger, energy, performance, health, and professional advice.
Recalculate when your weight, activity level, or routine changes significantly. Comparing results under similar conditions makes trends easier to interpret.
No. People with medical conditions, eating-disorder concerns, pregnancy, or special dietary needs should seek individualized guidance from a qualified healthcare professional.
Start With Better Information
Estimate your calorie needs, review the assumptions, and build a nutrition routine that fits your real life.
