Free Calorie Calculator Online – BMR, Maintenance & Weight Loss Calculator
Calorie Calculator
Results
BMR: --
Maintenance Calories: --
Mild Weight Loss: --
Weight Loss: --
Extreme Weight Loss: --
Food Energy Converter
Exercise Information
- Exercise: 15-30 minutes of elevated heart rate activity.
- Intense exercise: 45-120 minutes of elevated heart rate activity.
- Very intense exercise: 2+ hours of elevated heart rate activity.
Mifflin-St Jeor Equation
For men:
BMR = 10W + 6.25H - 5A + 5
For women:
BMR = 10W + 6.25H - 5A - 161
Revised Harris-Benedict Equation
For men:
BMR = 13.397W + 4.799H - 5.677A + 88.362
For women:
BMR = 9.247W + 3.098H - 4.330A + 447.593
Katch-McArdle Formula
BMR = 370 + 21.6 × Lean Body Mass
Calories in Common Foods
| Food | Serving | Calories |
|---|---|---|
| Apple | 1 medium | 95 |
| Banana | 1 medium | 105 |
| Egg | 1 large | 78 |
| Rice | 1 cup | 206 |
| Pizza | 1 slice | 285 |
| Chicken Breast | 100g | 165 |
Free Calorie Calculator – Calculate Daily Calorie Needs & BMR
Use our advanced Calorie Calculator to estimate your daily calorie needs, Basal Metabolic Rate (BMR), maintenance calories, and weight loss targets instantly. This free online calculator helps you understand how many calories your body needs based on your age, gender, height, weight, activity level, and body composition.
Whether your goal is weight loss, muscle gain, maintenance, or fitness tracking, this calculator provides accurate calorie estimates using scientifically recognized BMR formulas.
What Is a Calorie Calculator?
A calorie calculator estimates the number of calories your body burns daily and helps determine how many calories you should consume to maintain, lose, or gain weight.
This calculator determines:
- ✔ Basal Metabolic Rate (BMR)
- ✔ Maintenance Calories
- ✔ Mild Weight Loss Calories
- ✔ Standard Weight Loss Calories
- ✔ Extreme Weight Loss Calories
- ✔ Food Energy Conversion (kcal ↔ kJ)
How to Use the Calorie Calculator
- Enter your age.
- Select your gender.
- Input your height in centimeters (cm).
- Enter your weight in kilograms (kg).
- Choose your activity level.
- Select a BMR formula.
- Optionally enter your body fat percentage for the Katch-McArdle formula.
- Click the “Calculate Calories” button.
- Instantly view your calorie requirements and weight management targets.
What Is BMR?
BMR (Basal Metabolic Rate) is the number of calories your body burns while at complete rest. It represents the minimum energy needed to maintain vital body functions such as breathing, circulation, and digestion.
Your daily calorie requirements are calculated by multiplying your BMR by your activity level.
BMR Formulas Used
Mifflin-St Jeor Equation
One of the most accurate modern formulas for estimating daily calorie needs.
Men: BMR = 10W + 6.25H − 5A + 5
Women: BMR = 10W + 6.25H − 5A − 161
Revised Harris-Benedict Equation
Men: BMR = 13.397W + 4.799H − 5.677A + 88.362
Women: BMR = 9.247W + 3.098H − 4.330A + 447.593
Katch-McArdle Formula
This formula is useful for individuals who know their body fat percentage.
BMR = 370 + (21.6 × Lean Body Mass)
Activity Levels Explained
| Activity Level | Description |
|---|---|
| Sedentary | Little or no exercise |
| Light Activity | Exercise 1–3 days/week |
| Moderate Activity | Exercise 4–5 days/week |
| Active | Daily exercise or intense workouts |
| Very Active | Intense training 6–7 days/week |
Benefits of Using This Calorie Calculator
- ✔ Accurate daily calorie estimation
- ✔ Multiple scientifically backed BMR formulas
- ✔ Supports weight loss and muscle gain goals
- ✔ Calculates maintenance calories instantly
- ✔ Includes kcal to kJ energy converter
- ✔ Beginner-friendly interface
- ✔ Mobile-responsive design
- ✔ Free online fitness and nutrition tool
Why Calorie Tracking Matters
Understanding your calorie needs is essential for maintaining a healthy lifestyle and achieving fitness goals. Tracking calorie intake and expenditure may help:
- Manage body weight effectively
- Improve fitness performance
- Support healthy eating habits
- Prevent overeating
- Optimize athletic training
- Build muscle or lose fat efficiently
Calories in Common Foods
Knowing the calorie content of foods can help improve portion control and nutrition planning.
| Food | Serving Size | Calories |
|---|---|---|
| Apple | 1 Medium | 95 |
| Banana | 1 Medium | 105 |
| Egg | 1 Large | 78 |
| Rice | 1 Cup | 206 |
| Pizza | 1 Slice | 285 |
| Chicken Breast | 100g | 165 |
Frequently Asked Questions (FAQs)
How accurate is this calorie calculator?
This calculator uses scientifically recognized BMR equations to provide reliable calorie estimates for most individuals.
Which BMR formula should I use?
The Mifflin-St Jeor equation is generally considered one of the most accurate formulas for average adults.
Can I use this calculator for weight loss?
Yes, the calculator provides calorie targets for mild, standard, and aggressive weight loss goals.
What is maintenance calorie intake?
Maintenance calories represent the number of calories needed to maintain your current body weight.
Does this calculator work on mobile devices?
Yes, the calculator is fully responsive and works on smartphones, tablets, and desktop devices.
Disclaimer: This calorie calculator provides estimates for informational and educational purposes only. Individual calorie needs may vary based on metabolism, medical conditions, and lifestyle factors. Consult a healthcare professional or registered dietitian for personalized nutrition advice.
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