How Many Calories to Lose 1 Pound per Week: The Exact Numbers for 2026
Lose 1 lb/week by cutting 500 calories from your daily total. We show exact TDEE math, calorie targets by body type, and what actually works long-term.
Disclaimer: Calorie estimates reflect published TDEE formulas and CDC dietary guidelines. Nutritional needs vary based on metabolism, medical conditions, and activity level. Consult a registered dietitian or physician before making significant dietary changes. Calcwyse.com is not a medical or nutritional advisor.
On a 2,000-calorie daily budget, losing 1 pound per week means eating around 1,500 calories a day. Most people underestimate their maintenance calories by 300–500 calories — which is exactly why they stall after two weeks. For more on this topic, see our guide: BMI Chart for Adults 2026: What Your Number Actually Means.
The 3,500-Calorie Rule — And Where It Gets Complicated
One pound of body fat contains roughly 3,500 calories. Cut 500 a day, lose 1 pound per week. The math is clean.
In practice, metabolic adaptation hits around week 3–4. Your body adjusts. The effective deficit shrinks. But 500 cal/day is still the right starting point — you just have to recalculate every 4–6 weeks as your weight drops.
The CDC’s dietary guidelines confirm this deficit model is safe and sustainable for most healthy adults. It’s the same framework registered dietitians have used for decades.
📊 Calorie Deficit to Lose 1 Pound per Week — 2026 Reference
Annual Monthly Weekly Daily burn (TDEE) — — — 1,800 cal/day → target 1,300 472,500 deficit 39,375 3,500 2,000 cal/day → target 1,500 182,500 deficit — 3,500 2,200 cal/day → target 1,700 — — 3,500 2,500 cal/day → target 2,000 — — 3,500 2,800 cal/day → target 2,300 — — 3,500 3,200 cal/day → target 2,700 — — 3,500 Based on Mifflin-St Jeor TDEE formula. Estimates only. Individual metabolism varies.
Quick math: 500 cal/day × 7 days = 3,500 cal/week — roughly 1 lb of fat. Estimated · Mifflin-St Jeor formula · healthy adult baseline · standard activity assumptions.
How to Find Your Actual TDEE
TDEE stands for Total Daily Energy Expenditure. It’s everything your body burns in a day — breathing, walking, workouts, digestion.
The Mifflin-St Jeor equation is the most accurate formula for most people.
Men: (10 × weight kg) + (6.25 × height cm) − (5 × age) + 5
Women: (10 × weight kg) + (6.25 × height cm) − (5 × age) − 161
That gives your BMR. Multiply by your activity factor to get TDEE.
Activity multipliers:
- Sedentary (desk job, little exercise): BMR × 1.2
- Lightly active (1–3 days/week): BMR × 1.375
- Moderately active (3–5 days/week): BMR × 1.55
- Very active (6–7 days/week): BMR × 1.725
- Athlete-level training: BMR × 1.9
Most office workers land at 1.375–1.55. People consistently overestimate this multiplier. That’s one of the main reasons calorie targets miss.
Example: A 35-year-old woman, 5'6" (167 cm), 165 lbs (75 kg), lightly active.
BMR = (10 × 75) + (6.25 × 167) − (5 × 35) − 161 = 1,458 cal/day
TDEE = 1,458 × 1.375 = ~2,004 cal/day
Target for 1 lb/week: 2,004 − 500 = ~1,504 cal/day
Most people earning a sedentary lifestyle at a desk don’t realize how low their actual multiplier is. Guessing 1.55 instead of 1.375 on a 1,458 BMR inflates TDEE by 256 calories — enough to wipe out the entire deficit.
Calorie Targets by Body Type and Goal
Not everyone starts from the same place. Here’s a practical breakdown.
Estimated daily calorie targets to lose 1 lb/week — common profiles (2026):
- 🟢 Active man, 180 lbs, 30s — TDEE ~2,800 / Target ~2,300 cal/day
- 🟢 Active woman, 150 lbs, 30s — TDEE ~2,100 / Target ~1,600 cal/day
- 🟡 Sedentary man, 200 lbs, 40s — TDEE ~2,400 / Target ~1,900 cal/day
- 🟡 Sedentary woman, 160 lbs, 40s — TDEE ~1,800 / Target ~1,300 cal/day
- 🔴 Sedentary woman, 130 lbs, 50s — TDEE ~1,550 / Target ~1,050 cal/day ← below safe floor; target 0.5 lb/week instead
- 🔴 Sedentary man, 150 lbs, 60s — TDEE ~1,700 / Target ~1,200 cal/day ← borderline; monitor closely
Source: Mifflin-St Jeor formula + NIH Body Weight Planner methodology.
The red-flag rows are real. Most nutrition organizations recommend 1,200 cal/day minimum for women and 1,500 for men regardless of the calculated deficit. If your math pushes below those floors, target 0.5 lbs/week instead — a 250-calorie daily deficit.
What Actually Moves the Number
The 500-calorie deficit is a starting point, not a fixed formula. Three things shift it fast.
1. Your starting weight
Heavier people have higher TDEEs. A 250-lb sedentary man may burn 2,600 calories at rest. His 1 lb/week target is still 2,100 calories — plenty of food. A 130-lb sedentary woman burns maybe 1,600. Her target drops to 1,100. That’s medically too low.
2. Exercise type
Cardio burns calories during the session. Strength training raises TDEE for 24–48 hours through EPOC (excess post-exercise oxygen consumption). A 45-minute moderate run burns roughly 400–500 calories. A heavy lifting session burns 300–400 during the workout — then adds another 100–200 over the next day. If you’re adding a new workout routine while cutting calories, recalculate your TDEE at week 4.
3. Metabolic adaptation
After 4–6 weeks of a deficit, your body adapts. TDEE drops roughly 10–15% through adaptive thermogenesis. You move less without noticing. That’s why the plateau hits around week 6 for most people. Fix: recalculate TDEE every 4 weeks using your new weight.
Quick Answers About Losing 1 Pound per Week
How many calories is a 500-calorie deficit? 500 fewer calories than your TDEE every day. If you burn 2,000 cal/day, you eat 1,500.
Can I lose 1 pound per week just by walking more? Yes — if you increase TDEE by 500 calories without eating more. A 180-lb person burns about 100 calories per mile walked. Five miles per day covers the deficit. Most people split it: cut 250 from food, add 250 through movement.
What’s the minimum I should eat? 1,200 calories per day for women, 1,500 for men — per established clinical guidelines. Below those numbers, you risk losing muscle mass and micronutrient deficiencies, not just fat. For more on this topic, see our guide: What GPA Do You Need for Medical School in 2026? Averages, Cutoffs & Real Numbers.
Does meal timing matter for weight loss? Not much. Total daily calories drive fat loss. Intermittent fasting works because it helps people naturally eat less — not because of a metabolic window. Timing affects energy and hunger, not the math.
Why did I stop losing weight after three weeks? Adaptive thermogenesis. Your body dropped its TDEE by roughly 10%. Recalculate using your current weight, not your starting weight. Or weigh your food for one week — most people find a 150–300 calorie gap between estimated and actual intake.
Three Adjustments That Add Real Results
1. Track for 2 weeks before cutting
Most people eat 200–600 more calories than they estimate. Log everything for 14 days before setting a target. You’ll find the leaks — the handful of nuts, the splash of creamer. That audit alone often produces half the deficit without conscious restriction.
2. Prioritize protein at every meal
Protein has the highest thermic effect of any macronutrient. Your body burns 20–30% of protein calories just to digest it. Carbs: 5–10%. Fat: 0–3%. So 100 calories of chicken breast costs about 25 calories to process; 100 calories of olive oil costs essentially nothing. Protein also preserves muscle during a deficit, which keeps your TDEE from dropping as fast. According to Bureau of Labor Statistics consumer spending data, protein-rich foods like eggs and legumes remain among the most cost-efficient calories available.
3. Recalculate every 4 weeks
Every 10 lbs you lose, your TDEE drops roughly 50–80 calories. Small number — but over 3–4 months it compounds into a stall. Most people who plateau just haven’t updated their target.
💡 Estimated Daily Target: Baseline vs. Adjustments
Scenario Daily target Weekly deficit Monthly loss Baseline (TDEE − 500) 1,500 cal 3,500 cal ~4 lbs + High protein (thermic boost) 1,500 cal ~3,800 cal ~4.3 lbs + Recalculated at 10 lbs lost 1,450 cal 3,500 cal ~4 lbs sustained + 30-min daily walk added 1,500 cal ~4,200 cal ~4.8 lbs Estimates based on average thermic effect values and EPOC research. Individual results vary.
FAQ
What’s my exact daily calorie target to lose 1 pound per week?
Run the Mifflin-St Jeor formula with your current weight, height, and age. Multiply by your activity factor — 1.2 to 1.725. Subtract 500 from that number. If the result lands below 1,200 (women) or 1,500 (men), use a 250-calorie deficit and target 0.5 lbs/week instead. The calculator at the top of this page does this for you.
Is it safe to lose 1 pound per week long-term?
Yes, for most healthy adults. The CDC and most major nutrition organizations consider 0.5–2 lbs/week the safe, sustainable range. One pound per week sits in the middle — fast enough to see results, conservative enough to preserve muscle. If you have a history of disordered eating, a BMI under 18.5, or a metabolic condition, talk to a doctor first.
Does exercise change how many calories I need to cut?
It changes your TDEE, which changes your target. Add 300 calories of daily exercise and your TDEE rises by roughly that amount. You can eat 300 more and keep the 500-calorie deficit — usually more sustainable. Don’t double-count: if your activity multiplier already includes your workouts, don’t also subtract your exercise calories separately.
I’ve been at 1,500 calories for six weeks and stopped losing weight. What now?
Two likely causes. First, your TDEE dropped through adaptive thermogenesis — recalculate using your current weight. Second, calorie creep: portions expand gradually without awareness. Weigh your food for one week with a kitchen scale. Most people find a 150–300 calorie gap between estimated and actual intake.
What happens if I eat 1,000 calories a day instead of 1,500?
Faster short-term loss — but more muscle goes alongside the fat. Your TDEE drops faster. The weight typically comes back within 6–12 months. Research on very low calorie diets, defined as under 1,200 calories per day, shows poor long-term outcomes compared to moderate deficits. The 500-calorie deficit is slower. It holds.
Run Your Own Numbers
The formulas above get you close. For a personalized breakdown — including how your numbers shift as you lose weight — run the calculator at the top of this page.
Three tools that pair well with a weight-loss plan:
- Calorie Calculator — your TDEE and exact daily targets
- BMI Calculator — context for where you’re starting
- Savings Goal Calculator — deficit, consistency, and time work the same way in personal finance