How Many Calories Should You Eat to Lose Weight?

Almost every diet, however it is branded, works through the same mechanism: it puts you in a calorie deficit, meaning you consume fewer calories than you burn. Understanding the numbers behind that deficit lets you skip the gimmicks and build a plan that actually fits your body and your life.

Step 1: find your maintenance calories (TDEE)

Your maintenance level — your Total Daily Energy Expenditure, or TDEE — is the number of calories that keeps your weight stable. It is your resting metabolism plus everything you do in a day. Eat at this number and your weight holds; eat below it and you lose; above it and you gain.

Step 2: set a sensible deficit

A pound of fat stores roughly 3,500 calories, so a daily deficit of about 500 calories produces around one pound (0.5 kg) of loss per week. That pace is sustainable for most people. Doubling the deficit does not double safe results — it usually just makes the plan harder to keep and costs you muscle.

• 250 cal/day deficit ≈ 0.25 kg / 0.5 lb per week — gentle
• 500 cal/day deficit ≈ 0.5 kg / 1 lb per week — standard
• Avoid dropping below ~1,200 (women) or ~1,500 (men) without medical guidance

Why eating too little backfires

Very aggressive deficits feel productive but tend to fail. They are hard to sustain, they cost lean muscle along with fat, and they leave you hungry and low on energy. Slower, steadier loss preserves muscle, is easier to maintain, and is far more likely to stay off.

Protein and the quality of the deficit

A calorie deficit determines whether you lose weight; your protein intake and training influence whether that loss is mostly fat or partly muscle. Keeping protein high while in a deficit helps protect muscle, which keeps your metabolism higher and your results looking better.

Track, then adjust

Calculators give an estimate; your body gives the real answer. Eat at your target for two to three weeks and watch the trend, not the daily number — weight fluctuates with water and food in transit. If the scale is not moving over a couple of weeks, trim a little or move a little more.

Find your maintenance, subtract a moderate amount, keep protein up, and be patient. A deficit you can live with beats a perfect one you abandon.