# Gas Mileage Calculator

> Convert a trip into MPG, liters per 100 km, and kilometers per liter.

Page: https://askcalculators.com/calculator/gas-mileage-calculator/
Definition: https://askcalculators.com/calculator/gas-mileage-calculator/definition.json
JSON Schema: https://askcalculators.com/calculator/gas-mileage-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/gas-mileage-calculator/?inputSystem=us&distance=360&fuelUsed=12

## Inputs
- inputSystem: Input units; type=select; required; default=us; values=us|metric
- distance: Distance traveled; type=number; required; default=360; min=0.000001
- fuelUsed: Fuel used; type=number; required; default=12; min=0.000001

## Outputs
- mpg: Miles per US gallon; format=number; primary
- litersPer100Km: Liters per 100 km; format=number
- kmPerLiter: Kilometers per liter; format=number

## Formula
MPG = miles ÷ gallons; L/100 km = 235.214583 ÷ MPG

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