TDEE Calculator

What is the TDEE Calculator?

TDEE (Total Daily Energy Expenditure) is simply the total number of calories your body burns in a day when you factor in everything: sleeping, sitting at a desk, walking, exercising, even digesting food. It's the number that actually matters for nutrition planning. If you eat at TDEE, you maintain weight. Eat less, you lose. Eat more, you gain. Simple in theory, but most people have never actually calculated it. CalciHub's TDEE Calculator helps you estimate this number using your body measurements and daily activity level, giving you a practical starting point for your nutrition goals.

How Does a Total Daily Energy Expenditure Calculator Actually Work?

TDEE (Total Daily Energy Expenditure) starts from your BMR and multiplies it by an activity factor that reflects how much you move each day.

Formula: TDEE = BMR × Activity Multiplier

Activity multipliers: Sedentary (desk job, little exercise): × 1.2 Lightly active (light exercise 1–3 days/week): × 1.375 Moderately active (exercise 3–5 days/week): × 1.55 Very active (hard exercise 6–7 days/week): × 1.725 Extra active (physical job + daily training): × 1.9

BMR = your basal metabolic rate (calculated first from your stats) Activity multiplier = a number that scales up calories based on how active you actually are

How to Use CalciHub's TDEE Calculator

Step 1: Select Your Gender

First, you have to choose if you want to be male or female. This helps the calculator use the most accurate formula for your body type.

Step 2: Choose Your Measurement System

Select Imperial if you want to enter your height in feet and inches and weight in pounds. Choose Metric if you prefer centimeters and kilograms.

Step 3: Enter Your Age

Input your current age. Age is a key factor in how your body metabolizes food and how many calories you burn in a typical day.

Step 4: Add Your Weight

Enter your current body weight in the appropriate unit based on the measurement system you selected.

Step 5: Enter Your Height

Provide your height using feet and inches (Imperial) or centimeters (Metric).

Step 6: Select Your Activity Level

Choose the option that best matches your lifestyle:

• Sedentary (desk job, no exercise)
• Lightly Active, (exercise 1–3 days per week)
• Moderately Active (exercise 3–5 days per week)
• Very Active (athlete, 2x/day)
• Extra Active (physical job or twice-daily training)

Click "Calculate TDEE."

A Quick Real-Life Example

Emma is 27, 5'5" (165 cm), and weighs 140 lbs (63.5 kg). She runs twice a week and takes daily walks; she picks "lightly active."

Age: 27 | Height: 5'5" | Weight: 140 lbs | Activity: Lightly active

TDEE result: approximately 1,940 calories/day

To lose about 1 lb per week, Emma would eat around 1,440 calories. To gain muscle slowly, around 2,090. A hard number takes the guesswork out of her nutrition planning. She takes the result as a starting point and modifies it according to actual progress after 2 weeks.

Frequently Asked Questions