How Many Calories Do You Need Every Day?

Your body burns calories all day — not just when you exercise. Breathing, digesting food, walking to the mailbox, and even sleeping all use energy. The total you burn in 24 hours is called your total daily energy expenditure (TDEE).

Knowing a rough TDEE helps you plan meals, understand weight changes, and set realistic goals — especially after 50, when metabolism and muscle mass shift.

What is TDEE?

TDEE has two main parts:

• Basal metabolic rate (BMR) — calories burned at rest to keep organs functioning
• Activity — everything else: chores, walking, workouts, fidgeting

Most online calculators estimate BMR with the Mifflin-St Jeor equation, then multiply by an activity factor (sedentary, lightly active, etc.).

How many calories do adults need?

There is no single number for everyone. A sedentary woman in her 60s might need 1,600–1,800 calories per day to maintain weight, while an active man in his 50s might need 2,400–2,800.

General ranges for maintenance (not weight loss):

Profile	Approximate daily calories
Sedentary woman, 50+	1,600–1,900
Moderately active woman, 50+	1,900–2,200
Sedentary man, 50+	2,000–2,300
Moderately active man, 50+	2,300–2,700

These are starting points. Height, weight, muscle mass, and health conditions all matter.

Use our free Daily Calorie Calculator (TDEE) for a personalized estimate based on your age, sex, weight, height, and activity level.

Why calories matter more after 50

Muscle burns more calories at rest than fat. As muscle declines with age, maintenance needs can drop — even if eating habits stay the same. That is one reason gradual weight gain can creep in without obvious changes.

Protein and resistance exercise help preserve muscle, which supports both strength and a healthier metabolic rate.

Maintenance vs. weight loss

To maintain weight, eat roughly your TDEE.

To lose weight gradually, a modest deficit of 300–500 calories per day below TDEE often supports ½–1 lb per week loss — slow enough to preserve muscle and energy.

Avoid cutting below 1,200 calories (women) or 1,500 (men) without medical supervision. Very low intake can cause fatigue, nutrient gaps, and rebound eating.

Our Calorie Deficit Calculator shows a safe target and rough timeline based on how much you want to lose.

What to do with your number

1. Calculate TDEE — get your maintenance estimate
2. Set macros — use our Macro Calculator to split protein, carbs, and fat
3. Track meals — log real foods with the Food Nutrition Calculator

You do not need to hit the number exactly every day. Weekly averages matter more than one perfect day.

When to talk to your doctor

Ask before changing your diet if you have diabetes, kidney disease, heart failure, a history of eating disorders, or unexplained weight change. Calorie math is a tool — not a substitute for personalized medical advice.