How Many Calories Should You Eat Daily?
2026-05-25
Quick Answer
Quick Answer: Daily calorie needs depend on age, sex, weight, height, and activity. A moderately active 30-year-old woman at 170 cm and 70 kg needs about 2,000–2,200 kcal/day. Calculate yours with our Calorie Calculator.
Mifflin-St Jeor equation
The Mifflin-St Jeor BMR formula is widely used:
- Men: BMR = 10×weight(kg) + 6.25×height(cm) − 5×age + 5
- Women: BMR = 10×weight(kg) + 6.25×height(cm) − 5×age − 161
Multiply BMR by an activity factor (1.2–1.9) for total daily energy expenditure.
Activity multipliers
| Level | Factor |
|---|---|
| Sedentary | ×1.2 |
| Light exercise | ×1.375 |
| Moderate | ×1.55 |
| Active | ×1.725 |
Try It Yourself
Get your estimate in seconds with the Calorie Calculator.
Disclaimer: Not medical or dietary advice. Consult a registered dietitian for personalized plans.