Calorie Calculator (TDEE)

What is the Calorie Calculator?

A calorie calculator figures out how many calories your body actually needs each day based on who you are and how active you are. Not a generic "2,000 calories" number from a cereal box, a personalized estimate based on your age, height, weight, and activity level. People use it before starting a diet, when their weight loss starts to slow down, or just when they want to understand why eating "healthy" isn't always the same as eating the right amount. CalciHub's calculator helps you understand your daily calorie needs and provides tailored targets to support your weight goals.

How Does a Calorie Calculator Work?

The Calorie Calculator uses the Mifflin-St Jeor equation to find your Basal Metabolic Rate (the calories your body needs to keep you alive at complete rest), then multiplies that by an activity factor.

Formula: 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

Daily calories = BMR × activity factor (ranges from 1.2 for sedentary to 1.9 for very active)

BMR = your resting calorie burn Activity factor = a multiplier based on how much you move each week

How to Use CalciHub's Calorie Calculator

1. Choose your unit system, Select Metric or Imperial.

2. Select your gender, Choose Male or Female.

3. Enter your age, Add your current age.

4. Fill up your height and weight, Use your latest measurements.

5. Pick your activity level, Choose the option that best matches your lifestyle.

6. Click "Calculate" Get your results instantly.

7. Use the breakdown to plan your meals for the week.

Tip: Honest activity level selection matters more than most people realize. Many people think they're more active than they actually are. If you're not sure which option to choose, go with the lower one.

A Quick Real-World Example

John is 34 years old, 5'10" (178 cm), weighs 195 lbs (88.5 kg), and works a desk job but hits the gym 3 days a week, which puts him at "moderately active."

Age: 34 | Height: 5'10" | Weight: 195 lbs | Activity: Moderate

CalciHub’s Calorie calculates his maintenance calories at roughly 2,740 per day. To lose about 1 lb per week, he'd eat around 2,240 calories. That's a 500-calorie daily deficit,balanced without feeling restricted. Knowing his number means John can stop guessing and actually track what matters.

Frequently Asked Questions