About TDEE Calculator
The TDEE Calculator estimates the number of calories your body burns each day through all activities, from sleeping to exercising. TDEE stands for Total Daily Energy Expenditure, a measure of your total energy output in 24 hours. This online TDEE Calculator combines your Basal Metabolic Rate (BMR) with your activity level energy usage to show your maintenance calories, the exact number you need to maintain your current weight.
Why Knowing Your TDEE Is Important
Your TDEE is the foundation of smart nutrition planning. It helps you:
By understanding your caloric burn estimation, you can adjust your diet to match your goals and avoid guesswork.
- Determine your daily calorie needs
- Create a calorie deficit for fat loss.
- Build a surplus for muscle gain.
- Maintain energy and performance levels.
How the Online TDEE Calculator Works
The calculator first estimates your BMR (Basal Metabolic Rate), the number of calories your body burns at rest, using the Mifflin-St. Jeor Equation. Then it multiplies that by your activity multiplier to account for exercise and lifestyle.You'll need to input:
In seconds, the total daily energy expenditure calculator shows how many calories your body needs daily to stay at your current weight or move toward your target.
- Age, gender, height, and weight
- Activity level from sedentary to very active
- Goal: maintain, lose, or gain weight.
Why Use a TDEE Calculator
This energy expenditure calculator helps you make precise dietary choices. Instead of following generic calorie numbers, you'll know exactly how much your body burns every day.
TDEE Calculator Formula
The TDEE Calculator estimates your total daily energy expenditure (TDEE) by combining two components: your Basal Metabolic Rate (BMR) and your activity multiplier. The base equation used is the Mifflin-St. Jeor Formula, which calculates your metabolic rate, or the number of calories your body burns at rest
| Activity level | Typical week | Multiplier |
|---|---|---|
| Sedentary | Desk work, little or no exercise | × 1.2 |
| Lightly active | Light exercise 1–3 days/week | × 1.375 |
| Moderately active | Moderate exercise 3–5 days/week | × 1.55 |
| Very active | Hard exercise 6–7 days/week | × 1.725 |
| Extra active | Hard daily training or a physical job | × 1.9 |
Step 1: Calculate Basal Metabolic Rate (BMR)
For Men: BMR = 10 × weight (kg) + 6.25 × height (cm) – 5 × age (years) + 5
For Women: BMR = 10 × weight (kg) + 6.25 × height (cm) – 5 × age (years) – 161 This number shows your metabolism calculator output — how many calories your body needs function at rest.
Step 2: Apply Activity Level Multiplier
Next, the calculator multiplies your BMR by an activity factor to account for activity level energy usage throughout the day.
Step 3: Formula Summary
This equation estimates your total caloric burn, how many calories you burn daily through all physical and non-physical activities.
TDEE = BMR × Activity Level Multiplier
Example of TDEE Calculation
Let's look at an example for better understanding:
Example (Male):
BMR = (10 × 70) + (6.25 × 175) – (5 × 30) + 5
BMR = 700 + 1093.75 – 150 + 5 = 1648.75 kcal/day
TDEE = 1648.75 × 1.55 = 2555 kcal/day
- Age: 30
- Height: 175 cm
- Weight: 70 kg
- Activity Level: Moderate (1.55)
So, this person burns about 2555 calories per day.
How to Use Your TDEE
Once you know your TDEE, you can adjust your calorie intake based on your goal:
- Eat below TDEE to lose weight
- Eat equal to TDEE to maintain weight.
- Eat above TDEE to gain weight.
This creates a clear calorie balance that supports your fitness and nutrition goals without guesswork. Use your TDEE to calculate the ideal macronutrient ratio in the Macro Calculator..
Why This Formula Works
The Mifflin-St. Jeor Equation is one of the most accurate methods for estimating metabolic rate and energy expenditure. It adapts easily to different body types, activity levels, and goals.The online TDEE Calculator employs a data-driven approach to provide personalized results for everyone, from beginners to athletes. It helps you plan nutrition and training with precision, ensuring your daily calorie needs match your lifestyle. The calculator on Vast Calculators provides quick, reliable, and science-based calculations for effective energy management and better fitness outcomes.