TDEE Calculator

How to Use the TDEE Calculator

Use this TDEE calculator to estimate how many calories you burn in a typical day. It helps you set a maintenance baseline before planning weight loss, weight gain, or macro targets. The calculator is designed to give a fast answer, but the quality of the answer still depends on accurate inputs and a clear idea of what decision you are trying to support.

1. Enter Age, Gender, and Weight using the same units you plan to compare or report.
2. Add Height and Daily Activity Level and review the inputs before calculating.
3. Read the main estimated tdee first, then use the supporting outputs to understand the trade-offs behind that result.
4. Compare your numbers with the worked examples below if you want a quick reasonableness check.

What Your Result Means

The result estimates maintenance calories, which is the amount typically needed to hold body weight steady under the selected activity level. On this page, the primary output is estimated tdee.

Scenario 1: 30-year-old male, 78 kg, 180 cm, moderately active. Inputs used: age: 30, gender: male, weight: 78, height: 180, activity: 1.55. Example result: 2,728 kcal. This moderately active adult has an estimated TDEE of 2,728 kcal, which can serve as a maintenance-calorie baseline. Scenario 2: 42-year-old female, 64 kg, 168 cm, lightly active. Inputs used: age: 42, gender: female, weight: 64, height: 168, activity: 1.375. Example result: 1,814 kcal. For this profile, the TDEE estimate comes to 1,814 kcal, which is useful before setting a deficit or surplus.

Formula and Assumptions

Core formula: TDEE = BMR * activity multiplier. Basal metabolic rate is estimated with the Mifflin-St Jeor equation, then scaled by your activity level to estimate total daily energy expenditure.

1. BMR is the energy your body uses at rest.
2. TDEE is the better maintenance target because it includes activity.

When to Use This TDEE Calculator

Use this calculator to set a maintenance baseline before planning a calorie deficit, surplus, or macro strategy. Related paths for follow-up analysis include calorie calculator, hydration calculator, bmi calculator, and body fat percentage calculator.

Common Mistakes to Avoid

Most bad outputs come from a few repeated input errors or interpretation mistakes. Use this short checklist before relying on the result.

1. Picking an activity level that is more aspirational than real.
2. Assuming estimated TDEE is perfect from day one without tracking response.
3. Using calorie targets without checking protein, recovery, and training context.