Our free calorie calculator estimates your Total Daily Energy Expenditure (TDEE) — the number of calories your body burns each day based on your age, sex, height, weight, and activity level. Knowing your daily calorie needs is the foundation of any effective weight management plan.

This calorie calculator uses the Mifflin-St Jeor equation, which is currently considered the most accurate formula for estimating calorie needs in healthy adults. Your result includes your base metabolic rate (BMR) and your TDEE adjusted for activity, plus guidance on calorie targets for weight loss or weight gain.

How to Use the Calorie Calculator

To calculate your daily calorie needs, follow these steps:

1. Enter your age and select your sex.
2. Select your unit system — Imperial or Metric.
3. Enter your height and weight.
4. Select your activity level — from sedentary to extremely active.
5. Click Calculate Calories to see your TDEE and targets for weight loss and gain.

When Should You Use a Calorie Calculator?

Use the calorie calculator when starting a weight loss, weight gain, or maintenance plan. In particular, knowing your TDEE gives you the baseline from which to create a calorie deficit (for weight loss) or surplus (for muscle gain). A deficit of 500 calories per day results in approximately 1 pound of weight loss per week.

Furthermore, the calorie calculator is useful for athletes and active individuals who need to ensure they are eating enough to support their training. Additionally, it is helpful for understanding how changes in activity level affect your calorie needs.

Tips for Managing Your Daily Calorie Intake

Calories are the fundamental unit of energy in nutrition. Here are practical tips for managing them effectively:

• Prioritize protein — Protein is the most satiating macronutrient. Eating 0.7–1 gram of protein per pound of body weight helps preserve muscle during weight loss.
• Eat whole foods — Whole foods are naturally lower in calories and higher in nutrients than processed foods.
• Track your intake — Research consistently shows that people who track their food intake lose more weight.
• Do not cut too many calories — Severe calorie restriction can slow metabolism and cause nutrient deficiencies.
• Stay hydrated — Thirst is often confused with hunger. Drinking water before meals naturally reduces calorie intake.

Frequently Asked Questions About the Calorie Calculator

How many calories should I eat per day?

The average adult requires 1,600–3,000 calories per day depending on age, sex, height, weight, and activity level. Our calorie calculator gives you a personalized estimate based on the Mifflin-St Jeor equation.

How many calories are in a pound of fat?

One pound of body fat contains approximately 3,500 calories. Therefore, a daily deficit of 500 calories results in approximately 1 pound of fat loss per week, which is a healthy and sustainable rate.

What is the difference between BMR and TDEE?

BMR (Basal Metabolic Rate) is the calories your body needs at complete rest. TDEE (Total Daily Energy Expenditure) multiplies your BMR by an activity factor to estimate total daily calorie burn including movement and exercise.

Related Calculators

Furthermore, you might find these related tools useful: BMR Calculator — BMI Calculator — Ideal Weight Calculator — Body Fat Calculator

Disclaimer: Calorie estimates are for informational purposes only. Individual metabolic rates vary. Consult a registered dietitian for personalized nutrition advice.