# Fuel Consumption Converter

> Convert between L/100km, km/L, MPG (US), and MPG (UK) — for cars, motorcycles, and any other vehicle.

URL: https://uttir.com/fuel-consumption-converter
Categories: converters, math-tools
Privacy: Conversions run locally in your browser. No values are sent anywhere.

## About

Fuel economy is reported in different units in different countries. The US uses miles per gallon (MPG), the EU and most of the world use liters per 100 km (L/100km), and parts of Asia use km per liter (km/L). The US gallon and the UK (imperial) gallon are different, hence the "MPG (US)" and "MPG (UK)" distinction.

This converter handles all four. L/100km is the inverse of the others, so the math is non-linear — but the result is correct either way.

## How to use

1. **Enter a value** — Type the consumption in any supported unit. The default is 1 L/100km.
2. **Pick the units** — The from/to dropdowns cover all four common units.
3. **Mind the direction** — L/100km is "lower is better"; MPG and km/L are "higher is better". A 5 L/100km car is more efficient than a 10 L/100km car; a 50 mpg car is more efficient than a 25 mpg car.

## Examples

### US 30 mpg → L/100km

A US-spec 30 mpg rating converts to about 7.84 L/100km.

Input:

```
30 mpg (US)
```

Output:

```
≈ 7.84 L/100km
```

## FAQ

### Why is the US gallon different from the UK gallon?

1 US gallon = 3.785 liters. 1 UK (imperial) gallon = 4.546 liters. A car rated at 30 MPG (US) is about 35 MPG (UK) for the same fuel economy. UK ratings look higher because the UK gallon is larger.

### Which unit is most common globally?

L/100km is the official standard in most countries. MPG persists in the US and a few others. km/L is common in East Asia.

### How do I interpret the result?

For L/100km, lower is better (less fuel per 100 km). For MPG and km/L, higher is better (more distance per unit of fuel). When comparing two cars, normalize to the same unit.

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For the full HTML page with the live tool, visit https://uttir.com/fuel-consumption-converter.
This file is the markdown rendering at https://uttir.com/fuel-consumption-converter.md. See https://uttir.com/llms.txt for a site-wide summary.