TDEE Activity Multiplier Calculator
Total daily energy expenditure by activity level.
Enter your values
Choose one of: Male, Female.
Enter the weight in kg.
Enter the height in cm.
Enter the age in years.
Choose one of: Sedentary, Lightly active, Moderately active, Very active, Extremely active.
Results update instantly as you type — no submit needed. Your values are remembered on this device, and the shareable link reopens the calculator with exactly these numbers.
- TDEE
- 2,740 kcal/day
- BMR
- 1,768 kcal/day
- Mild deficit (-15%)
- 2,329 kcal/day
- Mild surplus (+10%)
- 3,014 kcal/day
Quick answer
TDEE is your BMR multiplied by an activity factor ranging from 1.2 (sedentary) to 1.9 (extremely active).
TDEE = BMR x activity factor
At a glance
| What it does | Total daily energy expenditure by activity level. |
|---|---|
| Category | Health |
| Inputs needed | Sex, Weight, Height, Age, Activity level |
| Main output | TDEE |
| Formula | TDEE = BMR x activity factor |
| Cost | Free — no sign-up, no download |
How to use the TDEE Activity Multiplier Calculator
- 1Enter sex, weight, height and age to compute BMR by Mifflin-St Jeor.
- 2Choose the activity level that best matches your typical week, not your best day.
- 3Reassess every few weeks as weight changes since TDEE shifts with body size.
Inputs explained
- Sex
- Choose one of: Male, Female.
- Weight(kg)
- Enter the weight in kg.
- Height(cm)
- Enter the height in cm.
- Age(years)
- Enter the age in years.
- Activity level
- Choose one of: Sedentary, Lightly active, Moderately active, Very active, Extremely active.
Worked example
Using the values the calculator loads with:
Inputs
- SexMale
- Weight80 kg
- Height178 cm
- Age30 years
- Activity levelModerately active
Results
- TDEE2,740 kcal/day
- BMR1,768 kcal/day
- Mild deficit (-15%)2,329 kcal/day
- Mild surplus (+10%)3,014 kcal/day
Frequently asked questions
Which activity level should I pick?
Most desk workers who exercise 3-4x/week fall in 'moderately active'.
Is this exact?
No — TDEE estimates carry roughly ±10% error; use trends in your actual weight to calibrate.
What do I need to enter into the TDEE Activity Multiplier Calculator?
Just 5 values: sex, weight, height, age, activity level. Every field starts with a realistic example, so you can change one number at a time and watch the result update instantly.
How does the TDEE Activity Multiplier Calculator work out the answer?
TDEE is your BMR multiplied by an activity factor ranging from 1.2 (sedentary) to 1.9 (extremely active). It applies the formula TDEE = BMR x activity factor and shows the working so you can check each step by hand.
Is the TDEE Activity Multiplier Calculator free, and do I need an account?
It is completely free with no sign-up, no download and no usage limit. Everything is calculated in your browser, so the numbers you type never leave your device.
Results are estimates for general information. For medical, legal, structural or financial decisions, confirm with a qualified professional.