Daily Calorie Needs Calculator

This tool implements, exactly as published, the 2023 Dietary Reference Intakes adult EER equations (age in years, height in centimeters, weight in kilograms, result in kcal/day). Four activity categories are defined by physical activity level: inactive (PAL 1.0–1.53), low active (1.53–1.69), active (1.69–1.85), and very active (1.85–2.5).

No activity multipliers, rounding, or weight-change adjustments are applied; the value is rounded only for display. The National Academies state the EER predicts the intake that maintains current weight and activity — the equations are not designed for weight loss or gain goals.

Male:  inactive  EER = 753.07 − 10.83×age + 6.50×height + 14.10×weight
         low active  EER = 581.47 − 10.83×age + 8.30×height + 14.94×weight
         active  EER = 1004.82 − 10.83×age + 6.52×height + 15.91×weight
         very active  EER = −517.88 − 10.83×age + 15.61×height + 19.11×weight

Female:  inactive  EER = 584.90 − 7.01×age + 5.72×height + 11.71×weight
           low active  EER = 575.77 − 7.01×age + 6.60×height + 12.14×weight
           active  EER = 710.25 − 7.01×age + 6.54×height + 12.34×weight
           very active  EER = 511.83 − 7.01×age + 9.07×height + 12.56×weight

Important limitations

1. Pick the reference equation that applies to you and your unit system.
2. Enter your age, height and weight, then choose the activity level that matches a typical week.
3. Read the estimated energy requirement in kcal per day and compare activity levels if you like.

• National Academies (2023) — Dietary Reference Intakes for Energy, Chapter 5 and Chapter 7
• NIH Office of Dietary Supplements — Energy fact sheet for consumers