Calories for Weight Loss

Weight loss happens when your body burns more calories than it consumes. This is known as a calorie deficit. Understanding how to calculate and manage this deficit is the key to sustainable fat loss.

What is a calorie deficit?

A calorie deficit means eating fewer calories than your Total Daily Energy Expenditure (TDEE). When maintained consistently, your body uses stored fat as energy.

How big should the deficit be?

• Small deficit (200–300 kcal): slow but sustainable fat loss
• Moderate deficit (400–500 kcal): balanced and effective for most people
• Large deficit (700+ kcal): faster loss but harder to maintain

Common mistakes

• Cutting calories too aggressively
• Ignoring protein intake
• Not accounting for activity level
• Expecting rapid results

Using the Calories & Macros calculator

Our calculator estimates your daily calorie needs based on age, weight, height, activity level, and goal. For weight loss, it applies a moderate deficit to support fat loss while preserving muscle.