To lose weight, most women need 1,200–1,500 calories per day and most men need 1,500–1,800 calories per day, depending on their starting weight and activity level. The exact number depends on your Total Daily Energy Expenditure (TDEE) — subtract 500 calories from your TDEE for a sustainable 1-pound-per-week loss, or subtract 250 for a slower 0.5-pound-per-week loss.
But those ranges are just starting points. Your ideal calorie intake depends on your specific body, your activity level, and how quickly you want to lose. In this guide, we’ll break down exactly how to find your number — and why the answer is more personal than most calculators suggest.
The Short Answer
If you want a quick estimate, here are general calorie ranges for weight loss based on gender and activity level:
| Activity Level | Women (calories/day) | Men (calories/day) |
|---|---|---|
| Sedentary (desk job, little exercise) | 1,200 – 1,400 | 1,500 – 1,700 |
| Lightly Active (exercise 1–3x/week) | 1,300 – 1,500 | 1,600 – 1,800 |
| Moderately Active (exercise 3–5x/week) | 1,400 – 1,600 | 1,700 – 1,900 |
| Active (daily exercise or physical job) | 1,500 – 1,700 | 1,800 – 2,100 |
| Very Active (intense daily training) | 1,600 – 1,900 | 2,000 – 2,300 |
These ranges assume you want to lose about 1 pound per week. But to get your exact number, you need to calculate your TDEE first.
Get your personalized calorie target in 30 seconds
Calculate Your Exact TDEE →How Your TDEE Determines Everything
TDEE stands for Total Daily Energy Expenditure — it’s the total number of calories your body burns in a day, including everything from breathing and thinking to walking and exercising.
Your TDEE is built on two components:
- BMR (Basal Metabolic Rate) — the calories your body burns at complete rest just to keep you alive. This accounts for 60–70% of your total calorie burn.
- Activity multiplier — a factor based on how active you are that accounts for everything from walking to the car to running a marathon.
The formula is simple:
TDEE = BMR × Activity Multiplier
Your BMR is calculated using the Mifflin-St Jeor equation, which is considered the most accurate formula for most people:
- Men: BMR = (10 × weight in kg) + (6.25 × height in cm) − (5 × age) + 5
- Women: BMR = (10 × weight in kg) + (6.25 × height in cm) − (5 × age) − 161
Once you know your BMR, you multiply it by the appropriate activity factor to find your TDEE. Then you subtract calories from that number to create your deficit.
Calorie Needs by Activity Level
Your activity multiplier dramatically changes how many calories you burn. Here are the standard multipliers used in the TDEE calculation:
| Activity Level | Multiplier | Example |
|---|---|---|
| Sedentary | 1.2 | Desk job, no regular exercise |
| Lightly Active | 1.375 | Light exercise 1–3 days/week |
| Moderately Active | 1.55 | Moderate exercise 3–5 days/week |
| Active | 1.725 | Hard exercise 6–7 days/week |
| Very Active | 1.9 | Intense training + physical job |
Worked Example: 70 kg Woman, Age 30
Let’s calculate calorie needs for a 70 kg woman who is 165 cm tall and 30 years old:
Step 1: Calculate BMR
BMR = (10 × 70) + (6.25 × 165) − (5 × 30) − 161
BMR = 700 + 1,031.25 − 150 − 161 = 1,420 calories
Step 2: Apply Activity Multiplier
| Activity Level | TDEE (calories) | Deficit Target (−500) |
|---|---|---|
| Sedentary (1.2) | 1,704 | 1,204 |
| Lightly Active (1.375) | 1,953 | 1,453 |
| Moderately Active (1.55) | 2,201 | 1,701 |
| Active (1.725) | 2,449 | 1,949 |
| Very Active (1.9) | 2,698 | 2,198 |
See how much the activity level matters? The same woman burns nearly 1,000 more calories per day depending on whether she’s sedentary or very active. This is why generic calorie recommendations often fail — they ignore this critical variable.
The 500-Calorie Rule
You’ve probably heard that cutting 500 calories per day leads to losing 1 pound per week. Here’s the math behind it:
- 1 pound of body fat contains approximately 3,500 calories
- A deficit of 500 calories/day × 7 days = 3,500 calories per week
- 3,500 calories ÷ 3,500 calories per pound = 1 pound lost
This rule has been the foundation of weight loss science for decades, and while the math is slightly simplified (metabolism adapts over time), it remains the most practical and sustainable approach for most people.
Why slower is better: Losing more than 1–2 pounds per week usually means you’re losing muscle along with fat. Muscle is metabolically active tissue — the more you lose, the slower your metabolism becomes, making future weight loss harder and regain more likely. A 500-calorie deficit hits the sweet spot between progress and preservation.
You can also use a smaller deficit for slower, more gradual loss:
- 250-calorie deficit = ~0.5 lbs per week (ideal for people close to their goal weight)
- 500-calorie deficit = ~1 lb per week (the standard recommendation)
- 750-calorie deficit = ~1.5 lbs per week (for those with more weight to lose)
Never go below a deficit that requires eating fewer than 1,200 calories (women) or 1,500 calories (men) per day. Extreme deficits backfire by slowing your metabolism, increasing hunger hormones, and leading to muscle loss.
Should You Eat Your Exercise Calories Back?
This is one of the most confusing questions in weight loss, and the answer depends entirely on how you calculated your calorie target.
If your calorie target is based on your TDEE — you should NOT eat back exercise calories. Here’s why: TDEE already accounts for your activity level. When you select “moderately active” in a calculator, it multiplies your BMR by 1.55, which already includes your workouts. Eating additional calories on top of a TDEE-based target would erase your deficit.
If your calorie target is based on your BMR only (meaning you set the activity level to “sedentary” regardless of actual activity), then you may need to eat back some exercise calories to avoid an excessively large deficit.
Best practice: Calculate your target using your true activity level (TDEE). Then, stick to that number regardless of whether you exercise that day. This keeps things simple and prevents the common mistake of overestimating how many calories you burn during exercise. Most people overestimate exercise calorie burn by 30–50%.
Get the right macros for your calorie target
Get Your Macro Split →What to Eat, Not Just How Much
Calories determine whether you lose weight. But what you eat determines how you feel while losing it — and whether you can stick with it long-term. Three priorities should guide your food choices:
Protein First
Protein is the most important macronutrient during weight loss. It preserves lean muscle mass, keeps you feeling full longer, and has a higher thermic effect (your body burns more calories digesting protein than carbs or fat). Aim for 0.7–1 gram of protein per pound of body weight per day. That means a 150-pound person should target 105–150 grams of protein daily.
Good sources: chicken breast, fish, eggs, Greek yogurt, lean beef, tofu, legumes, and protein powder.
Whole Foods Over Processed
Whole foods are naturally more filling per calorie than processed foods. A 300-calorie chicken salad with vegetables will keep you satisfied far longer than a 300-calorie muffin. This concept is called caloric density — and it’s the secret weapon of people who lose weight without feeling hungry.
Build your meals around: vegetables, fruits, lean proteins, whole grains, and healthy fats.
Fiber Is Your Friend
Fiber slows digestion, stabilizes blood sugar, and adds volume to meals without adding calories. Research shows that people who eat more fiber naturally consume fewer calories overall. Aim for 25–35 grams of fiber per day from vegetables, fruits, legumes, and whole grains.
Plan your exact calorie deficit for sustainable loss
Plan Your Calorie Deficit →When to Recalculate
Your calorie needs are not static. As you lose weight, your body changes — and your calorie target should change with it.
Recalculate your calorie needs every 5–10 pounds lost. Here’s why:
- Smaller body = lower BMR. A person who weighs 180 lbs burns more calories at rest than the same person at 160 lbs. Your BMR drops as you lose weight, meaning your TDEE drops too.
- Activity level may change. As you lose weight and get fitter, you may exercise more intensely or for longer durations, which changes your activity multiplier.
- Metabolic adaptation is real. Your body naturally becomes more efficient at using energy as you lose weight. This is why weight loss often slows down after the first few weeks — it’s not failure, it’s physiology.
For example, our 70 kg woman from earlier: if she loses 5 kg to reach 65 kg, her BMR drops from 1,420 to approximately 1,370. Her TDEE drops proportionally. If she doesn’t recalculate, she’ll eventually hit a plateau where her deficit disappears entirely.
Recalculating takes 30 seconds and keeps your weight loss on track.
Pro tip: Use a TDEE calculator at the start of your journey, then update your numbers every time you notice your weight loss stalling for more than 2 weeks. A simple recalculation often breaks through plateaus without requiring additional calorie cuts.
The Bottom Line
The number of calories you need to lose weight is not a mystery — it’s a calculation. Find your TDEE, subtract 500 for a steady 1-pound-per-week loss, eat enough protein to preserve muscle, and recalculate as your body changes. There are no magic foods, no forbidden foods, and no secret calorie numbers. It’s math, consistency, and patience. Start with our free calculator, get your personalized number, and take the guesswork out of weight loss entirely.