🔥 Daily Calorie Needs by Age & Activity
Estimated daily calorie needs by age and activity level.
Written by Albert Mateos · Founder & Editor
Last reviewed: May 2, 2026
Estimated daily calorie needs vary by age, sex, and physical activity level. These values represent approximate maintenance calories — the amount needed to sustain your current body weight. If your goal is weight loss, aim for 300–500 calories below these numbers. For weight gain, add 300–500 calories above. Use a TDEE calculator for more personalized estimates.
Men — Estimated Daily Calories
| Age | Sedentary | Moderately Active | Active |
|---|---|---|---|
| 18-25 | 2,400 | 2,800 | 3,000 |
| 26-30 | 2,400 | 2,600 | 3,000 |
| 31-35 | 2,400 | 2,600 | 3,000 |
| 36-40 | 2,400 | 2,600 | 2,800 |
| 41-45 | 2,200 | 2,600 | 2,800 |
| 46-50 | 2,200 | 2,400 | 2,800 |
| 51-55 | 2,200 | 2,400 | 2,800 |
| 56-60 | 2,200 | 2,400 | 2,600 |
| 61-65 | 2,000 | 2,400 | 2,600 |
| 66-70 | 2,000 | 2,200 | 2,600 |
| 71-75 | 2,000 | 2,200 | 2,400 |
| 76+ | 2,000 | 2,200 | 2,400 |
Women — Estimated Daily Calories
| Age | Sedentary | Moderately Active | Active |
|---|---|---|---|
| 18-25 | 2,000 | 2,200 | 2,400 |
| 26-30 | 2,000 | 2,000 | 2,400 |
| 31-35 | 1,800 | 2,000 | 2,200 |
| 36-40 | 1,800 | 2,000 | 2,200 |
| 41-45 | 1,800 | 2,000 | 2,200 |
| 46-50 | 1,800 | 2,000 | 2,200 |
| 51-55 | 1,600 | 1,800 | 2,200 |
| 56-60 | 1,600 | 1,800 | 2,200 |
| 61-65 | 1,600 | 1,800 | 2,000 |
| 66-70 | 1,600 | 1,800 | 2,000 |
| 71-75 | 1,600 | 1,800 | 2,000 |
| 76+ | 1,600 | 1,800 | 2,000 |
Activity Level Definitions
- Sedentary: Little to no exercise, desk job
- Moderately Active: Light exercise 3–5 days/week or active job
- Active: Hard exercise 6–7 days/week or physically demanding job
Data source: USDA Dietary Guidelines for Americans (2020–2025), based on Estimated Energy Requirements (EER) from the Institute of Medicine. Values assume average height and healthy weight for each age group.
About this chart
Daily calorie intake chart showing estimated energy needs by age, sex, and activity level. Covers sedentary, moderately active, and active lifestyles for men and women from age 18 to 75+. Based on Dietary Guidelines for Americans and Mifflin-St Jeor equation estimates to help you understand your baseline calorie requirements.
History of calorie needs charts
Daily calorie reference values trace back to the Atwater systemof the late 19th century, formalized in the U.S. Department of Agriculture's Dietary Allowances reports starting in 1941. The Institute of Medicine's Dietary Reference Intakes (2002, updated through 2005) introduced the Estimated Energy Requirement (EER) equations that drive modern calorie tables. The Dietary Guidelines for Americans 2020-2025, jointly issued by USDA and HHS, publish the most widely used reference table, breaking recommendations down by sex, age, and three activity tiers (sedentary, moderately active, active).
How to read this chart step by step
- Identify your sex; women's requirements run roughly 400-700 kcal lower than men of the same age.
- Find your age band; calorie needs decline by approximately 70-100 kcal per decade after 25 due to BMR reduction.
- Choose your activity column honestly: sedentary covers daily living only, moderately active assumes 30-60 minutes of activity, active means more than 60 minutes daily.
- Read your maintenance calorie figure.
- Subtract 300-500 kcal for fat loss or add 200-400 kcal for lean gain, per ISSN guidance.
Examples by age and sex
A 30-year-old moderately active woman has a USDA-listed maintenance of approximately 2,000-2,200 kcal/day, while a 30-year-old active man sits at 2,800-3,000 kcal. A 60-year-old sedentary woman requires only 1,600 kcal, explaining why weight gain at midlife often reflects unchanged intake against falling needs. A 20-year-old active man may require 3,200 kcal, the upper end of the standard tables; athletes routinely exceed even those values.
Limitations
The DRI/USDA tables are population averages based on doubly-labelled-water studies; individual variation in BMR is roughly +/- 200 kcal at the same demographic profile. The activity categories are coarse and self-reported, and most people overestimate their activity level. Body composition matters: a 90 kg man with 15% body fat needs more than a 90 kg man with 30% fat. Pregnancy, lactation, certain medications, and thyroid conditions all shift requirements. Charts are starting points; tracking weight over 2-4 weeks is the only way to confirm true maintenance for an individual.
Sources
- U.S. Department of Agriculture and U.S. Department of Health and Human Services. Dietary Guidelines for Americans, 2020-2025. 9th edition.
- Institute of Medicine. Dietary Reference Intakes for Energy, Carbohydrate, Fiber, Fat, Fatty Acids, Cholesterol, Protein, and Amino Acids. National Academies Press, 2005.
- Atwater WO, Bryant AP. The chemical composition of American food materials. USDA Bulletin 28, 1899.
Frequently Asked Questions
- How many calories should I eat per day?
- Daily calorie needs vary widely based on age, sex, height, weight, and activity level. A moderately active adult male typically needs 2,400-2,800 calories per day, while a moderately active female needs around 1,800-2,200 calories.
- How does activity level affect daily calorie needs?
- Activity level multiplies your basal metabolic rate by a factor ranging from 1.2 for sedentary individuals to 1.9 for very active people. This means a highly active person may need 50-60% more calories than someone of the same age and size who is sedentary.
- Do calorie needs decrease with age?
- Yes, calorie needs generally decline with age due to decreasing muscle mass and a slower metabolic rate. After age 30, most people need roughly 100-150 fewer calories per decade to maintain the same body weight, assuming activity levels stay constant.