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How Many Calories Should You Eat to Lose Weight?

For most people, eating 1,200-1,800 calories per day creates enough of a deficit to lose 1-2 lbs per week. Your exact number depends on your body and activity level.

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Calorie Deficit Calculator

Find out exactly how many calories you should eat to lose weight safely

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The Quick Answer

To lose weight, you need to eat fewer calories than you burn. For most adults:

  • Women: 1,200-1,500 calories/day for weight loss
  • Men: 1,500-1,800 calories/day for weight loss

But these are rough ranges. Your actual number depends on your height, weight, age, and how active you are. The calculator above gives you a personalized target.

Why Your Number Matters

Eating too few calories slows your metabolism and leads to muscle loss. Eating too many means no weight loss.

The sweet spot? A 500-calorie deficit from your maintenance level. This creates steady, sustainable weight loss of about 1 lb per week — without feeling starved.

For a complete breakdown of your daily needs, use our Daily Calorie Needs Calculator.

Quick Answers

Is 1,200 calories enough to lose weight? +

For many women, yes — but it's the minimum. Going below 1,200 calories (or 1,500 for men) without medical supervision can slow metabolism, cause nutrient deficiencies, and lead to muscle loss. Most people do better at 1,400-1,600 calories.

How fast will I lose weight? +

At a 500-calorie deficit, expect to lose about 1 lb per week. At a 750-calorie deficit, about 1.5 lbs per week. Faster than that is usually unsustainable and can backfire.

Why am I not losing weight at 1,500 calories? +

Usually tracking errors. Oils, sauces, and "small bites" add up fast. Studies show people underestimate intake by 40-50%. Try tracking more accurately for 2 weeks with photo-based logging.

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Medical Review by 465Cal Nutrition Team • Fact-checked for accuracy