Estimate daily calories for weight maintenance using the Mifflin–St Jeor resting-energy equation and an activity factor.
Calculate your estimate
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How this calculator can help
The estimate can provide a practical starting point for meal planning or a conversation with a qualified professional. Real energy needs vary with body composition, health, medications, pregnancy, breastfeeding, and changes in activity.
How the estimate works
The Mifflin–St Jeor equation estimates resting energy from sex, age, height, and weight. This tool multiplies that estimate by a selected activity factor to approximate maintenance calories. Treat the result as a range, not an exact prescription.
Sources and methodology
We use transparent formulas and primary public-health or research sources. Calculators simplify real life, so their results should be interpreted as estimates.