Active Energy Expenditure Calculator
Active energy expenditure (AEE) is the calories you burn through movement and activity, on top of the calories your body uses at rest. Enter your basal metabolic rate (BMR) and choose your activity level, and the calculator returns your active calories, your total daily energy expenditure (TDEE), and your resting burn. It is the activity slice of your daily calorie needs.
- Activity multipliers are population averages.
Formula
Active energy = TDEE − BMR = BMR × (activity factor − 1)
- Total daily energy (TDEE) = BMR × activity factor.
- Active energy (AEE) = TDEE − BMR = BMR × (activity factor − 1).
- Activity factors range from 1.2 (sedentary) to 1.9 (very active) and are population averages.
- AEE captures movement, exercise and the thermic effect of activity, but not your resting burn.
- For a personalised figure, start with an accurate BMR and pick the activity level that matches a typical week.
Example Calculation
Inputs
- Basal Metabolic Rate (BMR): 1600 kcal/day
- Activity Level: 1.55
With a BMR of 1,600 kcal/day and a moderate activity factor of 1.55, TDEE = 1,600 × 1.55 = 2,480 kcal/day. Active energy is 2,480 − 1,600 = 880 kcal/day.
Frequently asked questions
What is active energy expenditure?
It is the calories you burn through movement and activity each day, over and above the calories your body uses at rest (your BMR).
How is it calculated?
It multiplies your BMR by an activity factor to get total daily energy (TDEE), then subtracts the BMR: AEE = BMR × (activity factor − 1).
How does it differ from TDEE?
TDEE is your total daily burn including rest. Active energy is just the activity portion — TDEE minus your resting (BMR) calories.
Which activity level should I pick?
Choose the one matching a typical week: sedentary for desk-bound days, moderate for regular exercise, very active for heavy training or labour.
How accurate is the result?
It is an estimate. The activity multipliers are averages, so individual burn varies with body composition, intensity and daily movement.
Related calculators
TDEE Calculator Calculate your Total Daily Energy Expenditure (TDEE) — the total calories you burn in a day including exercise. This is your maintenance calorie number. BMR Calculator Calculate your Basal Metabolic Rate (BMR) — the calories your body burns at complete rest — using the Mifflin-St Jeor equation. Enter your sex, age, weight, and height to see your daily resting calorie needs. Energy Balance Calculator Energy Balance Calculator is a health and wellness calculator that helps you calculate mechanical energy from mass and velocity or height. The formula used is: Balance = calories in − calories out; weekly weight change ≈ balance × 7 / 7700 kg. Enter values using the units shown next to each input field (e.g. kg, cm, years).