# Calories Burned Calculator

> Estimate activity calories from body weight, duration, and metabolic equivalent (MET), with a time-projection table.

Page: https://askcalculators.com/calculator/calories-burned-calculator/
Definition: https://askcalculators.com/calculator/calories-burned-calculator/definition.json
JSON Schema: https://askcalculators.com/calculator/calories-burned-calculator/schema.json
Version: 2.0.0
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/calories-burned-calculator/?unitSystem=imperial&weightLb=160&activity=running6&durationMinutes=30

## Inputs
- unitSystem: Weight units; type=select; required; default=imperial; values=metric|imperial
- weightKg: Weight; type=number; required; default=73; min=1; max=500; showWhen=unitSystem:metric
- weightLb: Weight; type=number; required; default=160; min=2; max=1100; showWhen=unitSystem:imperial
- activity: Activity; type=select; required; default=running6; values=sleeping|desk|walking3|walking4|hiking|weights|cycling|running5|running6|running8|swimming|rowing|yoga|hiit|custom
- customMet: Custom MET value; type=number; required; default=5; min=0.1; max=30; showWhen=activity:custom
- durationMinutes: Duration; type=number; required; default=30; min=0.1; max=1440

## Outputs
- calories: Estimated calories burned; format=number; primary
- caloriesPerHour: Estimated hourly rate; format=number
- met: MET value; format=number
- activityLabel: Activity; format=text

## Formula
Calories ≈ MET × body weight (kg) × duration (hours).

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

Notice: MET calculations are population estimates; fitness, technique, environment, and device measurements can differ.