tdee calculator

What Is TDEE?

TDEE stands for Total Daily Energy Expenditure. It is your best estimate of how many calories your body uses in a day when you combine resting metabolism, daily movement, exercise, and digestion of food. In plain language: TDEE is your maintenance calorie level.

If you eat about your TDEE, your weight generally stays stable over time. If you eat below it, you tend to lose weight. If you eat above it, you tend to gain weight. That is why a TDEE calculator is one of the most practical starting points for fat loss, muscle gain, or recomposition.

How This TDEE Calculator Works

This calculator first estimates your BMR (Basal Metabolic Rate) using the Mifflin-St Jeor equation. BMR is the energy your body needs at complete rest to keep you alive—breathing, circulating blood, maintaining body temperature, and so on.

Then it multiplies BMR by your selected activity level. That final value is your estimated TDEE. Because all calculators are estimates, your real-world results should be fine-tuned with bodyweight trends over 2–4 weeks.

Quick Formula Summary

• BMR (male): 10 × weight(kg) + 6.25 × height(cm) − 5 × age + 5
• BMR (female): 10 × weight(kg) + 6.25 × height(cm) − 5 × age − 161
• TDEE: BMR × activity multiplier

How to Choose the Right Activity Level

Many people overestimate activity and end up with calorie targets that are too high. Choose the activity setting that matches your full week, not just your hardest training day.

• Sedentary: Desk job, minimal movement, little formal training.
• Lightly active: Some walking and 1–3 workouts per week.
• Moderately active: Regular training and decent daily movement.
• Very active: High training volume or physically demanding lifestyle.
• Extra active: Intense training plus a labor-heavy job or very high step count.

What to Do After You Get Your TDEE

For Fat Loss

A sustainable deficit is usually 10–20% below TDEE. Smaller deficits preserve performance and are easier to maintain. Larger deficits can work short-term but are harder to sustain and may increase fatigue and hunger.

For Muscle Gain

A good starting surplus is 5–15% above TDEE. The goal is to gain slowly so most of the weight is muscle, not fat. Pair your surplus with progressive resistance training and adequate protein.

For Maintenance

If your goal is to maintain, eat close to your calculated TDEE and monitor bodyweight trends. Slight adjustments of 100–200 calories are often enough to stay stable.

Macro Guidelines (Simple Starting Point)

Calories determine weight change, but macros influence satiety, training, and body composition. A practical baseline:

• Protein: 1.6–2.2 g per kg of body weight
• Fat: 0.6–1.0 g per kg of body weight
• Carbs: Fill remaining calories with carbohydrates

The calculator above includes a sample macro split to help you start quickly. You can adjust based on food preferences, digestion, and workout performance.

Common TDEE Calculator Mistakes

• Using an activity level that is too high.
• Ignoring weekend eating patterns.
• Changing calories too fast instead of observing trends for 2+ weeks.
• Not tracking bodyweight under consistent conditions (same time, same routine).
• Expecting exact precision from any single equation.

FAQ

Is TDEE the same for everyone at the same weight?

No. Age, sex, height, muscle mass, activity, and genetics all influence energy expenditure.

How often should I recalculate TDEE?

Recalculate every 4–6 weeks, or sooner if bodyweight changes significantly (around 5% or more).

Can I trust one calculator result forever?

Use it as a starting estimate. Your real progress data—scale trend, measurements, strength, and energy—should guide updates.

Final Takeaway

A TDEE calculator gives you a clear starting number so you can stop guessing and start making data-driven nutrition decisions. Use the estimate, track your progress consistently, and adjust in small steps. That combination beats perfection and builds results that last.