What is a safe rate of weight loss?

Losing 1 to 2 pounds (0.5 to 1 kg) per week is considered safe, sustainable, and preserves skeletal muscle mass.

How many calories are in a pound of fat?

A pound of body fat is equivalent to approximately 3,500 calories of stored metabolic energy.

Is there a minimum safe calorie floor?

Yes. It is clinically advised not to drop below 1,200 calories per day for females and 1,500 calories per day for males, unless supervised by a physician, to prevent nutrient deficiency and metabolic crash.

Health Tool

Calorie Calculator

Find the daily calories you need to lose weight, maintain weight, or gain weight. Optimize calorie deficit and surplus targets based on your goals.

Interactive Calorie Calculator Workspace

Live Solver

Age (Years)

Weight (kg)

Height (cm)

Activity Factor

Fitness & Weight Goal

Daily Caloric Intake Recommendation2094 kcal / day

Goal: Standard steady weight loss•Target Rate: 0.5 kg/week•Your TDEE: 2594 kcal

Mathematical Formula & Variables

Equation ModelDaily Calories = TDEE ± Goal Deficit/Surplus

Daily calorie intake is derived from Total Daily Energy Expenditure (TDEE). Calorie deficits of 250 to 1,000 kcal guide fat loss, while surpluses support weight gain.

Variable Definitions

Symbol	Description
TDEE	Total Daily Energy Expenditure
Calorie Deficit	Calories subtracted for weight loss (standardly 500 kcal for 1 lb/week)
Calorie Surplus	Calories added for weight gain (standardly 500 kcal for 1 lb/week)

How to Use the Calorie Calculator

Enter your biological sex, age, height, and weight.
Select your physical activity multiplier.
Specify your primary goal (Lose, Maintain, or Gain Weight).
Click calculate to review your personalized daily calorie recommendations.

Practical Example Calculation

Scenario Context: Finding the daily calorie target for a 160-pound female with a TDEE of 2,100 kcal who wants to lose 1 pound of fat per week.

Step 1: Identify TDEE: 2,100 kcal.

Step 2: Determine calorie deficit for 1 lb/week: 500 kcal.

Step 3: Subtract deficit from TDEE: 2,100 - 500 = 1,600.

The daily target is 1,600 calories (yielding a 500 kcal deficit).

Frequently Asked Questions

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