How to Calculate Your TDEE (Total Daily Energy Expenditure)

How to Use This Calculator

Welcome to our free online TDEE Calculator! We built this powerful tool to give you accurate and instant results without any hassle. To get the best out of this TDEE Calculator, simply input your specific values into the corresponding fields provided below.

Our highly optimized TDEE Calculator engine will instantly process your data, ensuring precision and saving you valuable time. Using a dedicated TDEE Calculator helps you avoid manual calculation errors, make informed decisions faster, and plan your finances or health metrics with confidence. Bookmark this page so you can easily access our TDEE Calculator whenever you need a quick, reliable calculation!

If you have ever tried to lose weight, gain muscle, or simply maintain your current physique, you have likely heard the phrase "calories in versus calories out." While the concept is simple, the execution requires knowing exactly how many calories your body burns every day.

This is where your Total Daily Energy Expenditure (TDEE) comes in.

This guide will explain exactly what TDEE is, how it differs from BMR, and how you can use it to reach your fitness goals with mathematical precision.

What is TDEE?

Your Total Daily Energy Expenditure (TDEE) is an estimation of how many calories you burn per day when exercise is taken into account. It is the holy grail metric for any dietary plan.

Your TDEE is comprised of three main components:

1. Basal Metabolic Rate (BMR) - ~70% of TDEE

This is the amount of energy your body expends simply to keep you alive while at rest. It powers your brain, keeps your heart beating, and maintains your body temperature. Even if you laid in bed all day without moving, you would still burn your BMR calories.

2. Thermic Effect of Food (TEF) - ~10% of TDEE

Believe it or not, your body burns calories just digesting the food you eat! Protein has the highest thermic effect (meaning it takes the most energy to digest), which is why high-protein diets are so effective for fat loss.

3. Activity Energy Expenditure - ~20% of TDEE

This includes both exercise (Non-Exercise Activity Thermogenesis, or NEAT) and intentional workouts (EAT). NEAT includes walking to your car, fidgeting, and doing household chores.

How the Calculator Works (The Science)

Our TDEE calculator uses the Mifflin-St Jeor Equation, which is considered by the scientific community to be the most accurate formula for calculating BMR without medical equipment.

Once the calculator determines your BMR based on your weight, height, age, and gender, it applies an Activity Multiplier:

• Sedentary: Little to no exercise, desk job (BMR × 1.2)
• Lightly Active: Light exercise 1-3 days/week (BMR × 1.375)
• Moderately Active: Moderate exercise 3-5 days/week (BMR × 1.55)
• Very Active: Hard exercise 6-7 days/week (BMR × 1.725)
• Extra Active: Very hard exercise and a physical job (BMR × 1.9)

How to Use Your TDEE to Reach Your Goals

Once you know your TDEE, achieving your dream physique becomes a simple math equation.

Goal 1: Fat Loss (The Deficit)

To lose fat, you must eat fewer calories than your TDEE.

• A deficit of 500 calories per day equates to approximately 1 pound (0.45 kg) of fat loss per week.
• Simply take your TDEE number and subtract 500. This is your new daily calorie target.

Goal 2: Muscle Gain (The Surplus)

To build muscle optimally (without putting on unnecessary fat), you must eat slightly more than your TDEE.

• A surplus of 250 to 500 calories per day provides the extra energy your body needs to synthesize new muscle tissue.

Goal 3: Maintenance

If you are happy with your current body, simply eat at your TDEE! Your weight will remain stable.