🍽️ How Many Calories Should You Eat to Lose Belly Fat?
Updated September 2026
Quick answer: Your target = maintenance calories (TDEE) minus 300–500. A typical 75 kg moderately-active woman maintains around 2,100 kcal, so 1,600–1,800 kcal loses roughly 0.3–0.5 kg per week; a 90 kg moderately-active man maintains around 2,700, so 2,200–2,400 does the same. Never plan below 1,200 (women) or 1,500 (men) kcal, recalculate every 5 kg lost, and get your personal numbers from our calculator rather than these examples.
The three numbers that matter
First: BMR — what your body burns at complete rest, driven by size, age and sex (roughly 1,300–1,500 kcal for most women, 1,600–1,900 for most men). Second: TDEE — BMR times an activity multiplier (1.2 sedentary to 1.7 very active); this is maintenance, the line between gaining and losing. Third: your target — maintenance minus a deliberate gap. Everything in fat loss is these three numbers; every diet that works, works by moving the third below the second.
The gap converts to fat at ~7,700 kcal per kilogram: a 500 kcal daily gap is ~0.45 kg per week, 300 kcal is ~0.27 kg. Slower than social media promises — and it compounds into 6–12 kg over six months, which is a different person.
Worked examples (then go get your own)
A 40-year-old woman, 168 cm, 75 kg, lightly active: BMR ≈ 1,450, TDEE ≈ 2,000, sensible target 1,500–1,700 kcal. A 35-year-old man, 180 cm, 92 kg, lightly active: BMR ≈ 1,870, TDEE ≈ 2,570, target 2,070–2,270. Notice neither target is dramatic — no 1,000-calorie crash plans, because those trade muscle and adherence for two extra weeks of speed.
These are illustrations, not prescriptions: two people with identical stats can differ by a couple hundred kcal in real maintenance. Start from the calculator's number, run it honestly for three weeks, and let your weekly-average scale trend tell you whether to adjust by 100–200 kcal.
Why your number keeps changing (and the floors)
As you lose weight, your maintenance drops — a smaller body burns less — and your activity often quietly drops too (NEAT adaptation). That's why the deficit that worked in month one stalls in month three: recalculate every ~5 kg or whenever the weekly average flatlines for three-plus weeks despite honest tracking.
The floors exist for nutrition, not bureaucracy: below ~1,200 kcal (women) / 1,500 (men) it becomes genuinely hard to cover protein and micronutrients, muscle loss accelerates and rebound risk spikes. If the math sends you under the floor, the answer is a slower pace or more movement — never deeper cutting. And protein stays high regardless: ~1.6–2 g per kg keeps the weight you lose actually being fat.
FAQ
Is 1,200 calories enough to lose belly fat?+
For most women it's the absolute floor, not the target — it works but with high hunger, muscle-loss and rebound risk. A 300–500 kcal deficit from your real maintenance is more sustainable and usually ends up faster over six months.
Do I need different calories for belly fat vs regular weight loss?+
No — belly fat is lost the same way as all fat: overall deficit. There is no belly-specific calorie trick; the belly is just often the last place your body releases fat from.
Should I eat back exercise calories?+
If your activity multiplier already includes your workouts, no — that would double-count. Add back only unusual extra activity (a long hike), and even then only half, since watches overestimate burns notoriously.
Put it into practice
Training shapes the muscle; the calculator handles the rest.