Health & Fitness
Estimate maintenance calories from BMR and activity. Enter your details below to get an immediate estimate and review exactly how it is calculated.
Maintenance calories/day
2,480
Maintenance calories equal BMR × activity multiplier.
Formula calorie-needs, version 1.0.0Health formulas are population-level screening tools. They can support a conversation, but they cannot describe every person or replace individualized medical guidance.
Maintenance calories equal BMR × activity multiplier.
Calculatecalorie needsFormula version 1.0.0. A BMR of 1,600 with a 1.55 activity multiplier estimates 2,480 kcal/day.
Review the source and method →Reviewed 2026-07-28 by CalculateBetter editorial team.This calculator provides an educational estimate. Real-world outcomes can vary when circumstances or inputs change.
BUILT FOR CLARITY
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HOW TO USE IT
Start with the figures you know today, then change one assumption at a time. This makes it easy to see which input has the greatest effect on the result.
Use realistic values first, then create a second scenario for the best- or worst-case outcome. Compare the difference before relying on a single estimate.
THE MATH BEHIND IT
Maintenance calories equal BMR × activity multiplier.
A BMR of 1,600 with a 1.55 activity multiplier estimates 2,480 kcal/day.A BMR of 1,600 with a 1.55 activity multiplier estimates 2,480 kcal/day.
How to read the result: The headline value is an estimate based on constant inputs. Real-world rates, fees, taxes, payment timing, and rounding can change the final amount.
The result follows the formula and assumptions shown on this page. It is an estimate, so actual outcomes may differ when rates, fees, taxes, or personal circumstances change.
Yes. Copy the calculation link to preserve the entered values, save it on this device, or export the result as CSV or PDF.
Start with values that reflect your circumstances today. If an input is uncertain, calculate a conservative and an optimistic scenario so the result becomes a useful planning range.
Only the inputs, formula and assumptions listed on this page are included. External costs, changing conditions, personal eligibility rules and professional judgment may affect a real-world outcome.
Reviewed for clarityReviewed by CalculateBetter editorial team
Updated 2026-07-28
Transparent sourcesU.S. CDC — Healthy Weight and BMI
Formula version 1.0.0
ImportantFor planning and educational use. It does not replace professional advice.
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Disclaimer: Calculations are for informational purposes only and do not constitute professional financial advice. Please consult with a certified professional before making financial decisions.