🥗 Free Calorie Calculator

Calculate your daily calorie needs based on your personal metrics and activity level. Get customized recommendations for weight loss, maintenance, or muscle gain.

Your Information

Age

Gender

Height (cm)

Weight (kg)

Activity Level

Sedentary Little or no exercise, desk job

Light Activity Light exercise 1-3 days/week

Moderate Activity Moderate exercise 3-5 days/week

Very Active Hard exercise 6-7 days/week

Extremely Active Physical job or 2x training/day

Your Daily Calorie Needs

2,456

Calories per day to maintain weight

1,956

Weight Loss
-0.5 kg/week

2,456

Maintain
Current Weight

2,956

Muscle Gain
+0.5 kg/week

Recommended Macros (Maintain)

Protein

184g (30%)

Carbs

276g (45%)

Fat

68g (25%)

BMR (Basal Metabolic Rate) 1,788 cal

TDEE (Total Daily Energy) 2,456 cal

Understanding Calories and Energy Balance

Calories are units of energy that your body uses to perform every function×from breathing and thinking to walking and exercising. Understanding your calorie needs is the foundation of effective weight management.

What is BMR (Basal Metabolic Rate)?

BMR is the number of calories your body needs to perform basic life-sustaining functions while at complete rest. This includes:

Breathing and circulation
Cell production and repair
Brain and nerve function
Hormone regulation
Body temperature maintenance

BMR typically accounts for 60-75% of your total daily calorie expenditure.

What is TDEE (Total Daily Energy Expenditure)?

TDEE is your BMR multiplied by an activity factor. It represents the total calories you burn in a day, including:

BMR: Basic body functions (60-75%)
TEF: Thermic Effect of Food - digesting food (10%)
NEAT: Non-Exercise Activity - daily movements (15-30%)
EAT: Exercise Activity Thermogenesis (5-10%)

The Formulas We Use

This calculator uses the Mifflin-St Jeor equation, considered the most accurate for estimating BMR:

Men: BMR = (10 × weight in kg) + (6.25 × height in cm) - (5 × age) + 5

Women: BMR = (10 × weight in kg) + (6.25 × height in cm) - (5 × age) - 161

Calorie Goals for Different Objectives

For Weight Loss

To lose weight, you need to create a calorie deficit×consuming fewer calories than you burn. Here's how different deficits affect weight loss:

Daily Deficit	Weekly Weight Loss	Sustainability	Best For
250 calories	~0.25 kg (0.5 lb)	Very sustainable	Slow, steady loss
500 calories	~0.5 kg (1 lb)	Sustainable	Most people
750 calories	~0.75 kg (1.5 lb)	Challenging	Motivated individuals
1000 calories	~1 kg (2 lb)	Difficult	Obese individuals only

For Muscle Gain

Building muscle requires a calorie surplus along with strength training. Most people need:

Lean bulk: 200-300 calories above maintenance
Standard bulk: 400-500 calories above maintenance
Aggressive bulk: 700-1000 calories above maintenance (more fat gain)

For Maintenance

Eating at maintenance helps you:

Stabilize your current weight
Build muscle while minimizing fat gain (recomposition)
Take a break from dieting
Maintain metabolic health

Understanding Macronutrients

Calories come from three macronutrients, each with different functions:

Protein (4 calories per gram)

Essential for muscle building, repair, and immune function. Recommended intake:

Sedentary: 0.8g per kg body weight
Active/Weight loss: 1.2-1.6g per kg
Muscle building: 1.6-2.2g per kg

Best sources: chicken, fish, eggs, Greek yogurt, legumes, tofu

Carbohydrates (4 calories per gram)

Primary energy source for brain and muscles. Types include:

Complex carbs: Whole grains, vegetables, legumes (preferred)
Simple carbs: Fruits, dairy (moderate)
Refined carbs: White bread, sugar (limit)

Fats (9 calories per gram)

Essential for hormone production and nutrient absorption:

Healthy fats: Olive oil, avocados, nuts, fatty fish
Limit: Saturated fats (butter, fatty meat)
Avoid: Trans fats (processed foods)

Macro Split Recommendations

Balanced: 30% protein, 40% carbs, 30% fat

Low-carb: 30% protein, 25% carbs, 45% fat

High-protein: 40% protein, 35% carbs, 25% fat

Common Calorie Counting Mistakes

1. Not Counting Cooking Oils

A tablespoon of olive oil adds 120 calories. If you're cooking with oil multiple times daily, that's easily 300-500+ untracked calories.

2. Ignoring Liquid Calories

Coffee creamer, juice, soda, and alcohol add up quickly. A daily latte with sugar can add 200+ calories.

3. Underestimating Portions

Studies show people underestimate portions by 30-50%. Use a food scale for accuracy, especially when starting out.

4. Forgetting "Bites, Licks, and Tastes"

Tasting while cooking, finishing your kid's food, or grabbing a handful of snacks can add 100-300 daily calories.

5. Weekend Overeating

Eating 500 extra calories on Saturday and Sunday can erase a 250-calorie daily deficit, preventing any weight loss.

Daily Calorie Needs Reference Table (2026 NIH Standards)

These are estimated daily calorie needs using the Mifflin-St Jeor equation × the gold standard recommended by the Academy of Nutrition and Dietetics. Values reflect total daily energy expenditure (TDEE) including activity:

For Women (Based on 5'5" / 165cm, 140 lbs / 63.5kg)

Activity Level	Age 25	Age 35	Age 45	Age 55
Sedentary (desk job, no exercise)	1,748	1,686	1,624	1,562
Lightly active (1×3 days/week)	2,002	1,931	1,860	1,789
Moderately active (3×5 days/week)	2,254	2,174	2,094	2,014
Very active (6×7 days/week)	2,508	2,418	2,328	2,237

For Men (Based on 5'10" / 178cm, 175 lbs / 79.5kg)

Activity Level	Age 25	Age 35	Age 45	Age 55
Sedentary	2,149	2,072	1,996	1,919
Lightly active	2,461	2,373	2,285	2,197
Moderately active	2,772	2,674	2,575	2,476
Very active	3,083	2,975	2,864	2,754

Key Insight: Calorie needs decrease by approximately 60×80 calories per decade after age 25 due to declining muscle mass (sarcopenia). Strength training 2×3 times per week counteracts this by maintaining metabolically active muscle tissue × allowing you to eat more while staying lean.

? Frequently Asked Questions

How accurate is this calorie calculator? +

This calculator uses the Mifflin-St Jeor equation, which is accurate within about 10% for most people. Individual metabolism varies, so use this as a starting point and adjust based on real-world results. If you're not seeing expected changes after 2-3 weeks, adjust by 100-200 calories.

Should I eat back exercise calories? +

Generally, no. Exercise calorie estimates are often inflated by 30-50%. If you selected your activity level accurately, exercise is already factored in. Only eat back calories if you're doing intense training (1+ hour) and feel genuinely hungry or weak.

How many calories should I never go below? +

Women should generally not eat below 1,200 calories, and men below 1,500 calories, without medical supervision. Eating too few calories can cause nutrient deficiencies, muscle loss, metabolic adaptation, and other health issues.

Why am I not losing weight at a deficit? +

Common reasons include: underestimating calories consumed, overestimating exercise, water retention (especially during menstrual cycle or high-sodium days), stress, lack of sleep, or metabolic adaptation. Try reducing calories by another 100-200 or increasing activity.

Do I need to count calories forever? +

No! Calorie counting is a learning tool. After tracking for a few months, most people develop intuition about portion sizes and food choices. Many transition to mindful eating or only track occasionally to maintain awareness.