Calorie Calculator

Free Calorie Calculator – Find Your Daily Calorie Needs Instantly

Calculate BMR, TDEE, Macros & Create Meal Plans

About Calorie Calculation

This calculator estimates your daily calorie needs based on the Mifflin-St Jeor equation, which is considered the most accurate for most people. It accounts for your basal metabolic rate (BMR) and activity level to provide personalized recommendations.

Enter Your Details

Age

Gender

Weight (kg)

Height (cm)

Activity Level

Goal

Body Fat % (Optional) For more accurate calculations

Target Rate

Macronutrient Guide

Macronutrients (protein, carbs, fats) are essential nutrients your body needs in large amounts. Understanding and balancing these can optimize your health, performance, and body composition goals.

Protein

4 cal/g

Functions: Muscle repair, enzyme production, immune function

Sources: Meat, fish, eggs, dairy, legumes, tofu

Daily Need: 0.8-2.2g per kg of body weight

Carbohydrates

4 cal/g

Functions: Primary energy source, brain fuel

Sources: Grains, fruits, vegetables, legumes

Daily Need: 45-65% of total calories

Fats

9 cal/g

Functions: Hormone production, nutrient absorption

Sources: Nuts, seeds, oils, avocado, fatty fish

Daily Need: 20-35% of total calories

Recommended Macro Ratios by Goal

Weight Loss

30% Protein
40% Carbs
30% Fat

Maintenance

25% Protein
50% Carbs
25% Fat

Muscle Gain

35% Protein
45% Carbs
20% Fat

Food Choices by Macro

High Protein Foods

Chicken breast (31g/100g)
Greek yogurt (10g/100g)
Lentils (9g/100g)
Eggs (6g per egg)
Tofu (8g/100g)

Complex Carbs

Brown rice (23g/100g)
Sweet potato (20g/100g)
Oats (66g/100g)
Quinoa (21g/100g)
Whole wheat bread (49g/100g)

Healthy Fats

Avocado (15g/100g)
Almonds (49g/100g)
Olive oil (100g/100g)
Salmon (13g/100g)
Chia seeds (31g/100g)

Sample Meal Plans

These are sample meal plans based on different calorie goals. Adjust portion sizes based on your specific needs and preferences.

1500 Calorie Meal Plan (Weight Loss)

Breakfast (300 calories)

2 eggs 1 slice whole wheat toast 1 cup spinach Green tea

Calories: 300 | Protein: 20g | Carbs: 25g | Fat: 15g

Lunch (400 calories)

Grilled chicken breast 1 cup quinoa Mixed vegetables Olive oil dressing

Calories: 400 | Protein: 35g | Carbs: 40g | Fat: 12g

Dinner (400 calories)

Baked salmon Sweet potato Steamed broccoli Lemon wedge

Calories: 400 | Protein: 30g | Carbs: 35g | Fat: 15g

Snacks (400 calories)

Greek yogurt Handful of almonds Apple Protein shake

Calories: 400 | Protein: 25g | Carbs: 30g | Fat: 18g

2500 Calorie Meal Plan (Muscle Gain)

Breakfast (600 calories)

3 eggs + 3 egg whites 2 slices whole wheat toast 1 avocado Oatmeal with berries

Calories: 600 | Protein: 40g | Carbs: 60g | Fat: 25g

Pre-Workout (200 calories)

Banana Protein shake

Calories: 200 | Protein: 20g | Carbs: 30g | Fat: 2g

Post-Workout (600 calories)

Grilled chicken breast 2 cups brown rice Mixed vegetables Protein shake

Calories: 600 | Protein: 60g | Carbs: 80g | Fat: 10g

Dinner (600 calories)

Lean beef steak Sweet potatoes Green salad Olive oil

Calories: 600 | Protein: 50g | Carbs: 50g | Fat: 25g

Bedtime Snack (500 calories)

Cottage cheese Almonds Casein protein

Calories: 500 | Protein: 45g | Carbs: 20g | Fat: 25g

Free Calorie Calculator – Find Your Daily Calorie Needs Instantly

Whether you want to lose weight, build muscle, or simply eat better — knowing your daily calorie needs is the first step. This free calorie calculator uses the Mifflin-St Jeor equation, the most accurate formula used by dietitians worldwide, to calculate your BMR (Basal Metabolic Rate) and TDEE (Total Daily Energy Expenditure) in seconds. Just enter your details, choose your goal, and get a personalized calorie target right away.

What Is a Calorie Calculator?

A calorie calculator is an online tool that estimates how many calories your body needs each day to function, based on your personal details — age, gender, height, weight, and how active you are.

It calculates two key numbers:

BMR (Basal Metabolic Rate) — the calories your body burns at complete rest just to keep you alive (breathing, digestion, circulation).

TDEE (Total Daily Energy Expenditure) — your BMR plus all the calories burned through daily activity and exercise.

Once you know your TDEE, the calculator adjusts your calorie target up or down depending on whether your goal is to lose weight, gain muscle, or maintain your current weight.

How Many Calories Do You Need Per Day?

Daily calorie needs vary significantly from person to person. Here is a general reference based on average adults:

Goal	Average Woman	Average Man
Weight loss	1,200–1,500 kcal	1,500–1,800 kcal
Maintenance	1,600–2,000 kcal	2,000–2,500 kcal
Muscle gain	2,000–2,400 kcal	2,500–3,000 kcal

These are estimates only. Your actual number depends on your unique body stats and lifestyle. Use the calculator above to get your personalized result.

How the Calorie Calculator Works – Step by Step

This calculator uses the Mifflin-St Jeor Formula, which research consistently shows is more accurate than older methods like the Harris-Benedict equation.

Step 1 – Calculate Your BMR

The formula differs slightly for men and women:

For men: BMR = (10 × weight in kg) + (6.25 × height in cm) – (5 × age) + 5
For women: BMR = (10 × weight in kg) + (6.25 × height in cm) – (5 × age) – 161

Step 2 – Multiply by Your Activity Level (TDEE)

Sedentary (desk job, little movement): BMR × 1.2
Lightly active (light exercise 1–3 days/week): BMR × 1.375
Moderately active (exercise 3–5 days/week): BMR × 1.55
Very active (hard exercise 6–7 days/week): BMR × 1.725
Extra active (intense daily training or physical job): BMR × 1.9

Step 3 – Adjust for Your Goal

Lose weight: TDEE – 500 calories = approx. 0.5 kg loss per week
Maintain weight: TDEE = no change needed
Gain weight: TDEE + 500 calories = approx. 0.5 kg gain per week

How Many Calories Should You Eat to Lose Weight?

To lose weight safely and sustainably, most nutrition experts recommend a daily calorie deficit of 300–500 calories below your TDEE. This leads to roughly 0.3 to 0.5 kg of fat loss per week — a pace that protects muscle mass and avoids metabolic slowdown.

Avoid cutting calories too aggressively. Going below 1,200 calories per day for women or 1,500 calories per day for men can cause fatigue, muscle loss, nutrient deficiencies, and eventually slow down your metabolism — making it harder to lose weight long term.

A realistic and sustainable approach: aim for a 500-calorie daily deficit through a combination of eating slightly less and moving slightly more.

Calorie Calculator for Weight Loss vs. Muscle Gain

Weight Loss Goal

When your goal is weight loss, the calculator sets your daily calorie target 500 calories below your maintenance level. Focus on:

High-protein foods to preserve muscle while losing fat (chicken, eggs, lentils, Greek yogurt)
Fiber-rich vegetables and whole grains to stay full on fewer calories
Limiting liquid calories from sugary drinks, juices, and alcohol

Muscle Gain Goal

When building muscle, your body needs a calorie surplus — extra fuel beyond maintenance to support muscle repair and growth. The calculator adds 500 calories to your TDEE. Focus on:

Eating enough total protein: 1.6–2.2g per kg of body weight per day
Spreading protein intake across 3–4 meals throughout the day
Pairing your calorie surplus with a consistent strength training program

What Is BMR and Why Does It Matter?

Your Basal Metabolic Rate (BMR) is the number of calories your body burns while completely at rest — no activity, no exercise, just staying alive. It accounts for 60–75% of your total daily calorie burn.

BMR is influenced by:

Age – BMR slows down with age, roughly 1–2% per decade after 20
Gender – men generally have a higher BMR due to greater muscle mass
Body composition – more muscle = higher BMR, more fat = lower BMR
Height and weight – larger bodies require more energy at rest

Even if you lay in bed all day, your body still burns calories to power your heart, lungs, kidneys, and brain. That number is your BMR. Knowing it helps you understand your true minimum calorie floor — going below it for extended periods causes serious metabolic damage.

What Is TDEE and How Is It Different from BMR?

TDEE (Total Daily Energy Expenditure) is the total number of calories your body burns in a full day — including your BMR plus everything you do: walking, working, exercising, even digesting food.

While BMR is fixed based on your body, TDEE changes day to day depending on your activity. A rest day TDEE might be 1,800 calories, while an intense training day could push it to 2,400 calories.

For weight management purposes, most calorie calculators use your average weekly activity level to estimate a consistent daily TDEE — which is what you use to set your calorie target.

Calories by Age – How Your Needs Change Over Time

Age Group	Women (moderate activity)	Men (moderate activity)
18–25	2,000–2,200 kcal	2,400–2,800 kcal
26–40	1,800–2,000 kcal	2,200–2,600 kcal
41–55	1,700–1,900 kcal	2,000–2,400 kcal
56–70	1,600–1,800 kcal	1,800–2,200 kcal
70+	1,500–1,700 kcal	1,600–2,000 kcal

As you age, muscle mass decreases and metabolism naturally slows — meaning your calorie needs gradually reduce. This is why people often notice weight creeping up in their 40s and 50s even without changing their eating habits. Adjusting your calorie intake every few years is important for long-term weight management.

Tips to Stay Within Your Daily Calorie Goal

Knowing your calorie target is one thing — staying within it consistently is another. Here are practical strategies that work:

Eat enough protein at every meal. Protein is the most filling macronutrient and helps preserve muscle during weight loss. Aim for at least 25–35g of protein per meal.

Start meals with vegetables. Low-calorie, high-fiber vegetables fill your stomach before you get to the calorie-dense parts of your plate.

Don’t drink your calories. A single large coffee drink, juice, or soda can add 200–400 calories with zero satiety.

Batch cook your meals. When healthy food is already prepared and ready, you’re far less likely to go over your calorie budget from impulsive choices.

Weigh food occasionally. Even rough portion awareness helps you stay aligned with your goals without obsessing over every gram.

Track your results every 2–3 weeks. If your weight isn’t moving in the right direction after 3 weeks, adjust your calorie target by 100–150 calories and reassess.

Frequently Asked Questions (FAQs)

What is a calorie calculator?

A calorie calculator is an online tool that helps you estimate how many calories your body needs each day based on your age, gender, height, weight, and activity level. It uses proven formulas to calculate your Basal Metabolic Rate (BMR) and Total Daily Energy Expenditure (TDEE), giving you a personalized calorie target to lose, maintain, or gain weight.

How accurate is this calorie calculator?

This calculator uses the Mifflin-St Jeor Equation, which is widely considered the most accurate formula for estimating calorie needs. While it provides a close estimate, keep in mind that actual calorie burn can vary based on factors like genetics, muscle mass, metabolism, and hormones.

What does BMR mean?

BMR (Basal Metabolic Rate) is the number of calories your body burns while at complete rest — just to maintain essential body functions like breathing, digestion, and circulation. It represents your minimum daily calorie requirement.

What is TDEE and how is it calculated?

TDEE (Total Daily Energy Expenditure) represents your total daily calorie burn, including all physical activities. It’s calculated by multiplying your BMR by an activity factor that reflects how active you are (from sedentary to extra active).

How do I use this calorie calculator?

Using this tool is simple: Enter your age, gender, height, and weight. Select your activity level and goal (lose, maintain, or gain weight). Click on “Calculate Calories.” You’ll instantly see your BMR, TDEE, and daily calorie target for your selected goal.

How many calories should I eat to lose weight?

To lose weight safely, you should aim for a calorie deficit of around 500 calories per day, which typically leads to a weight loss of 0.5 kg per week. The calculator automatically adjusts your calorie goal for safe and sustainable fat loss.

Can this tool help me gain muscle?

Yes! If you choose the “Gain Weight” goal, the calculator adds a 500-calorie surplus to your maintenance level, helping you gain around 0.5 kg per week. Combine this with strength training and a high-protein diet for best results.

What happens if I eat fewer calories than recommended?

Eating too few calories can slow your metabolism, cause fatigue, and lead to muscle loss instead of fat loss. It’s important to eat enough nutrients while maintaining a healthy calorie deficit.

How often should I use the calorie calculator?

You should update your calculations every 4–6 weeks or whenever your weight, activity level, or goals change. Regular updates ensure your calorie plan stays accurate as your body evolves.

Is this calorie calculator free to use?

Yes, this Calorie Calculator is completely free. You can use it anytime to check your calorie requirements and adjust your nutrition plan accordingly.

Does this calculator work for both men and women?

Absolutely! The calculator uses different equations for men and women to ensure accurate calorie estimates based on physiological differences.

Can I use this calculator if I’m an athlete or have a physically demanding job?

Yes. If you train intensely or have a highly active lifestyle, choose the “Extra Active” option under activity levels. This will give you a more accurate estimate of your higher calorie needs.

Calorie Calculator