How is daily calorie need calculated?

Your daily calorie need is found by first calculating your basal metabolic rate (BMR). BMR is the amount of energy your body expends at rest. This value depends on factors such as age, gender, height, and weight. Then, it is multiplied by your physical activity level (PAL) to find your total daily energy expenditure (TDEE). Formulas such as Harris-Benedict, Mifflin-St Jeor, or Katch-McArdle are used for this calculation.

How many calories should I consume per day to lose weight?

To lose weight, you need to consume fewer calories than your daily calorie need (TDEE). Generally, a daily calorie deficit of 500-1000 calories is recommended for healthy and sustainable weight loss. This corresponds to approximately 0.5-1 kg weight loss per week. However, your daily intake should be at least 1200 calories for women and 1500 calories for men.

How should I determine my activity level?

When determining your activity level, it's important to honestly assess your daily routine. Sedentary: If you do almost no exercise. Lightly active: If you do light exercise 1-3 times a week. Moderately active: If you do moderate intensity exercise 3-5 times a week. Very active: If you do intense exercise 6-7 times a week. Extra active: If you train twice a day or work in a physically demanding job.

Daily Calorie Needs Calculator

Calculate your Basal Metabolic Rate (BMR) and Total Daily Energy Expenditure (TDEE) to find out how many calories you need per day.

Calculate Your Daily Calories

Fill in your details below for an accurate calculation

The Mifflin-St Jeor formula provides the most accurate BMR calculation for most people and is generally recommended by nutrition experts.

Gender

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Age

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Height

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Weight

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Activity Level

Sedentary

Little or no exercise, desk job

Lightly Active

Light exercise/sports 1-3 days/week

Moderately Active

Moderate exercise/sports 3-5 days/week

Very Active

Hard exercise/sports 6-7 days/week

Extra Active

Very hard exercise & physical job or 2x training

Frequently Asked Questions

What is BMR?

BMR (Basal Metabolic Rate) is the amount of energy your body needs to maintain basic physiological functions while at complete rest. This includes breathing, circulation, cell production, nutrient processing, and protein synthesis. BMR typically accounts for 60-70% of your total daily energy expenditure.

What is TDEE?

TDEE (Total Daily Energy Expenditure) is the total number of calories your body burns in a 24-hour period, including your BMR plus additional calories burned through physical activity, exercise, digestion (thermic effect of food), and non-exercise activity thermogenesis (NEAT).

How accurate are these calculations?

The formulas used in this calculator provide an estimate of your caloric needs. While they are based on scientific research, individual metabolic rates can vary by up to 10-15%. For the most accurate assessment, consider consulting with a healthcare professional or registered dietitian.

Which formula should I use?

The Mifflin-St Jeor equation is considered the most accurate for most people and is recommended by many nutrition experts. If you know your body fat percentage, the Katch-McArdle formula may provide better results as it considers lean body mass. The Harris-Benedict equation is an older formula but still widely used.

How many calories should I eat to lose weight?

For safe and sustainable weight loss, it's generally recommended to create a calorie deficit of 500-1000 calories below your TDEE, which typically results in losing 0.5-1 kg per week. However, your calorie intake should not fall below 1200 calories for women and 1500 calories for men to ensure you're getting adequate nutrition.

How should I adjust my calorie intake for my goals?

For weight maintenance, consume approximately your TDEE. For weight loss, create a deficit by consuming fewer calories than your TDEE (typically 500 calories less per day for 0.5 kg loss per week). For weight gain, create a surplus by consuming more calories than your TDEE (typically 500 calories more per day for 0.5 kg gain per week).