Most adults need roughly 1,600–3,000 calories per day, with the lower end typical for smaller, older, or less active people and the higher end for larger, younger, or more active people. The exact number depends on age, sex, weight, height, and how active you are.

Quick Scoop

  • Adult women often maintain weight somewhere around 1,600–2,400 calories per day, depending on age and activity level. Very active women or those who are taller may need more within or slightly above this range.
  • Adult men commonly need about 2,000–3,000 calories per day, again varying with age and how much they move. Younger, active men tend to sit at the higher end of that range, while older or sedentary men sit lower.
  • Health guidelines emphasize matching what you eat to what you burn to maintain weight, eating less than you burn to lose, and more than you burn to gain.

What Changes Your Number

  • Age: Calorie needs peak in late teens and early adulthood, then gradually decrease as metabolism slows.
  • Activity level: Sedentary people can maintain weight on fewer calories than those who walk, train, or work on their feet a lot.
  • Body size and composition: Taller, heavier, or more muscular bodies burn more calories, even at rest.

Because of all these factors, general charts are just starting points, and personalized advice from a clinician or dietitian is recommended, especially if you have medical conditions or significant weight goals.

Simple Way To Use This

  • If you are an average, moderately active woman, starting around 1,800–2,200 calories is typical for maintenance for many adults in that group.
  • If you are an average, moderately active man, starting around 2,200–2,800 calories is common for maintenance.
  • Then:
    1. Track your intake for 2–3 weeks.
    2. Watch weight trends (not day‑to‑day fluctuations).
    3. Adjust by about 200–300 calories up or down if your weight is moving in the opposite direction of your goal.

Health & Safety Note

Extreme restriction (for example, regularly eating far below 1,200 calories a day for adults) can harm metabolism, mood, and overall health and should be supervised by a professional if ever considered. For anyone with a history of disordered eating, working directly with a healthcare provider or registered dietitian is especially important before changing calorie intake.

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Wondering how many calories you should consume a day? Learn typical daily calorie ranges for men and women, how age and activity change your needs, and how to adjust safely.

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