# Calorie Needs Calculator

> Estimate daily maintenance calories and apply an optional daily adjustment.

Page: https://askcalculators.com/calculator/calorie-needs-calculator/
Definition: https://askcalculators.com/calculator/calorie-needs-calculator/definition.json
JSON Schema: https://askcalculators.com/calculator/calorie-needs-calculator/schema.json
Version: 1.0.0
Maintained by: AskCalculators (software project; not a credentialed reviewer)
Qualified review: pending. Automated checks do not establish professional approval.
Page status: Live
Review status: Pending

## Use
Open the calculator page and enter values. Query-string parameters can restore and bookmark a calculation.
Example: https://askcalculators.com/calculator/calorie-needs-calculator/?sex=female&age=35&weightKg=70&heightCm=170&activityFactor=1.375&dailyAdjustment=0

## Inputs
- sex: Equation sex constant; type=select; required; default=female; values=female|male
- age: Age; type=number; required; default=35; min=18; max=120
- weightKg: Weight; type=number; required; default=70; min=1; max=500
- heightCm: Height; type=number; required; default=170; min=50; max=300
- activityFactor: Activity factor; type=select; required; default=1.375; values=1.2|1.375|1.55|1.725|1.9
- dailyAdjustment: Daily calorie adjustment; type=number; optional; default=0; min=-2000; max=2000

## Outputs
- maintenanceCalories: Estimated maintenance; format=integer; primary
- targetCalories: Adjusted daily target; format=integer
- bmr: Estimated BMR; format=integer
- weeklyEnergyDifference: Weekly energy adjustment; format=integer

## Formula
Maintenance calories = Mifflin–St Jeor BMR × activity factor

## Rules
- Empty optional inputs are undefined, not zero.
- Hidden conditional inputs are ignored.
- Do not invent missing required inputs.

Notice: Adult estimate only. Do not use this tool as medical or eating-disorder treatment advice.