Maintenance Calorie Calculator

Estimate the daily calorie intake that may help you maintain your current body weight at your selected activity level.

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Maintenance calories are an estimate. Day-to-day expenditure changes with movement, training, sleep, body composition and other factors, so use the result as a starting point rather than an exact requirement.

Maintained by Live Fitness Check. Last updated: August 13, 2026. How we test our calculators .

About This Calculator

The Maintenance Calorie Calculator focuses on the practical question of how many calories may maintain your current weight. It estimates resting energy needs, adjusts them for activity and presents the result as a starting daily intake rather than as an exact requirement.

Methodology

Maintenance calories are estimated from the Mifflin-St Jeor resting-energy equation and the selected activity multiplier. The calculator also shows a narrow ±5% range around the estimate to emphasize that daily energy use naturally fluctuates rather than occurring at one exact calorie number.

Sources

Mifflin MD et al. — A new predictive equation for resting energy expenditure in healthy individuals: https://pubmed.ncbi.nlm.nih.gov/2305711/
NIDDK — Body Weight Planner: https://www.niddk.nih.gov/bwp
Disclaimer
This maintenance-calorie result is a general estimate. Weight trends, training volume, medical conditions and individual metabolism can change real maintenance needs. People with medical or nutritional concerns should use individualized professional guidance.

Frequently Asked Questions

What are maintenance calories?

Maintenance calories are the approximate daily energy intake that would match your energy expenditure closely enough to keep body weight relatively stable over time.

Why is there a maintenance range?

Energy expenditure varies from day to day, so a small range better reflects real life than treating one calculated number as perfectly exact.

How should I use the result?

Use it as a starting point, then compare your intake with your weight trend over several weeks and make gradual adjustments if needed.