SMART AI CALCULATOR
Calories Calculator (India & USA)

The Calories Calculator by SMART AI CALCULATOR helps men and women in India & USA calculate their daily calorie requirement based on age, gender, weight, height, and activity level using kg or lbs.

What is a Calories Calculator?

A calories calculator estimates how many calories your body needs each day to maintain current weight. It is based on your BMR (Basal Metabolic Rate) and TDEE (Total Daily Energy Expenditure), considering your activity level.

Calories Calculator 🔊

Gender Unit System Age Weight Height Activity Level

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How Calories are Calculated (Formula)

First, BMR is calculated using the Mifflin-St Jeor Equation. Then, BMR is multiplied by an activity factor to get TDEE.

Male BMR: 10×Weight + 6.25×Height − 5×Age + 5
Female BMR: 10×Weight + 6.25×Height − 5×Age − 161
TDEE: BMR × Activity Level

Why Knowing Daily Calories is Important?

Helps with weight loss planning
Supports healthy weight gain
Improves diet and fitness results
Essential for long-term health management

Frequently Asked Questions (FAQ)

How many calories should I eat to lose weight?

Usually 300–500 calories below your daily requirement.

Are calorie needs different for men and women?

Yes, due to body composition and metabolism differences.

Is this calculator accurate?

It provides reliable estimates using standard scientific formulas.