Most women trying to lose weight guess at their calorie number, and that guess is usually wrong. The truth is that your daily calorie target depends on your age, height, current weight, and activity level — and it changes as you lose weight.
How many calories should I eat for weight loss? The answer is your maintenance calories minus a modest deficit of 300 to 500 calories per day. This typically lands most women between 1,400 and 1,800 calories daily, which supports a safe loss of about one to two pounds per week. Your exact number depends on your body size and activity, so a calculator is the most reliable way to find it.
Most generic advice fails because it gives one number for everyone. A 5-foot-2 woman who works at a desk needs far fewer calories than a 5-foot-8 woman who walks daily, yet both often receive the same generic target. This article breaks down how to find your personal number, why the math works, and what to do when weight loss stalls.
You will also learn why protein matters more than you think, how to adjust your calories as you shrink, and what to do when the scale stops moving. No gimmicks — just the numbers that actually matter for your body.
Key Points at a Glance
| Point | What It Means | Why It Matters |
|---|---|---|
| Calorie deficit | Eat 300–500 fewer calories than you burn | This creates safe, sustainable weight loss of 1–2 pounds per week |
| Personalized target | Your number depends on age, height, weight, and activity | Generic targets fail because bodies differ significantly |
| Protein priority | Aim for 25–30 grams of protein per meal | Protein preserves muscle and keeps you feeling full |
| Recalculation needed | Your calorie needs drop as you lose weight | Recheck your target every 10–15 pounds lost |
| Plateaus are normal | Weight loss slows after the first few weeks | Adjusting calories or activity breaks through stalls |
How Many Calories Should I Eat for Weight Loss?
Your personal calorie target starts with your maintenance calories — the number you eat to stay exactly the same weight. From that number, subtract 300 to 500 calories to create a deficit that produces steady, healthy weight loss. For most women, that calculation lands between 1,400 and 1,800 calories per day.
The safest way to find your maintenance number is a TDEE calculator, which uses your age, height, weight, and activity level to estimate your total daily energy expenditure. This is more accurate than guessing or using a friend’s number, because it accounts for the fact that a taller, more active woman burns more calories than a shorter, sedentary one. I always tell my readers to recalculate every 10 to 15 pounds lost, because your maintenance number drops as your body gets smaller.
What Factors Change Your Calorie Needs?
Four main factors determine your daily calorie burn: age, sex, body size, and activity level. Muscle mass also matters — muscle burns more calories at rest than fat does, which is why two women of the same weight can have different calorie needs.
Age plays a role because metabolism naturally slows as we get older, partly due to muscle loss. This is why strength training becomes more important in your 40s and 50s — preserving muscle keeps your calorie needs higher. Activity level is the factor you control most directly, and even adding a daily 30-minute walk increases your calorie allowance noticeably.
I have seen women in their 50s succeed with the same calorie target as women in their 30s, simply because they strength train twice weekly. The numbers matter, but so does what you do with them.
How Much Protein Do You Need While Cutting Calories?
Protein becomes your most important nutrient when you are eating fewer calories. Research consistently shows that higher protein intake preserves muscle mass during weight loss and increases feelings of fullness, which makes sticking to your calorie target easier.
A practical target is 25 to 30 grams of protein at each meal, which adds up to roughly 75 to 90 grams daily. That looks like three eggs with cheese at breakfast, a chicken breast at lunch, and fish or tofu at dinner. I always tell clients to eat protein first at every meal — it is the difference between feeling satisfied and feeling deprived.
What Happens When Weight Loss Stalls?
Plateaus are a normal part of weight loss, not a sign that you are failing. As you lose weight, your body needs fewer calories, so the same intake that produced loss a month ago may now maintain your weight. This is why recalculating your target every 10 to 15 pounds is essential.
If you have been stuck for three or more weeks, first check that you are tracking accurately — portion sizes creep up easily. If tracking is honest, try increasing your daily step count by 2,000 steps or adding one extra strength session weekly. The evidence is mixed on whether “refeeding days” help break plateaus, so focus instead on the fundamentals that are proven to work.
Some studies suggest that varying your calorie intake day to day can help some people, but results vary widely. The most reliable approach remains a consistent deficit with accurate tracking.
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Frequently Asked Questions
How many calories should I eat to lose weight safely?
Most women should aim for 1,400 to 1,800 calories daily, depending on their size and activity level. Never go below 1,200 calories without medical supervision, as this risks muscle loss and nutrient deficiencies.
How do I calculate my personal calorie target?
Use a TDEE calculator to estimate your maintenance calories, then subtract 300 to 500. This gives you a personalized target that accounts for your age, height, weight, and activity level.
Is 1,200 calories too low for weight loss?
For most women, 1,200 calories is a clinical minimum that requires medical supervision. It may be appropriate for very small, sedentary women, but most people find this level unsustainable and lose muscle mass.
How fast will I lose weight on a 500-calorie deficit?
A 500-calorie daily deficit typically produces about one pound of weight loss per week. This is considered a safe, sustainable rate that preserves muscle and is easier to maintain long-term.
Do I need to recalculate my calories as I lose weight?
Yes, you should recalculate every 10 to 15 pounds lost. Your maintenance calories drop as your body gets smaller, so your deficit target must adjust to keep losing weight.
Can I eat more calories if I exercise?
Yes, exercise increases your total daily energy expenditure, which raises your calorie allowance. A 300-calorie workout allows you to eat roughly 300 more calories while maintaining the same deficit.
The TDEECAL Team writes about nutrition, metabolism, and fat loss the way we built our calculator, with real numbers and no hype. We dig into the research so you don’t have to guess.