Converter Tool
Fuel Economy Converter
Convert between MPG (US), MPG (UK), and L/100km. 100% client-side — no data is sent to any server.
Used in USA, South America
Used in Europe, Asia, Australia
⚡ Quick Reference
•30 MPG (US) = 7.84 L/100km
•40 MPG (US) = 5.88 L/100km
•1 MPG (US) ≈ 1.2 MPG (UK)
•50 MPG (US) = 4.70 L/100km
•20 MPG (US) = 11.76 L/100km
•Lower L/100km = Better economy
🔒 All processing happens in your browser. No data is sent to any server.
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How to use this Fuel Economy Converter
Converting fuel economy units is simple with our free online tool. Enter the fuel economy value you want to convert, select the From unit (MPG US, MPG UK, or L/100km), and choose the To unit.
The conversion happens automatically. You can also load common fuel economy values for different vehicle types with a single click, or copy the result to your clipboard.
What this fuel economy converter does
- ✓Three fuel units — Convert between MPG (US), MPG (UK), and L/100km.
- ✓Accurate conversions — Uses precise mathematical formulas with standard conversion factors.
- ✓Common vehicle examples — Quickly load typical fuel economy for different vehicle types.
- ✓Swap units — Easily swap between From and To units.
- ✓Copy result — Copy the converted value with one click.
- ✓100% client-side — All processing happens in your browser. No data is sent to servers.
Common use cases
- •Compare fuel economy between vehicles from different countries
- •Convert MPG to L/100km for international car specifications
- •Calculate fuel consumption for road trips and travel planning
- •Compare fuel costs between vehicles using different measurement systems
- •Convert fuel economy for fleet management and logistics
- •Understand and compare vehicle efficiency ratings globally
🚗 Fuel Economy Reference
Vehicle Types
- Small car: 30-40 MPG (5.9-7.8 L/100km)
- Sedan: 25-35 MPG (6.7-9.4 L/100km)
- SUV: 20-28 MPG (8.4-11.8 L/100km)
- Hybrid: 45-60 MPG (3.9-5.2 L/100km)
Conversions
- 1 US gallon = 3.785 L
- 1 UK gallon = 4.546 L
- 1 mile = 1.609 km
- MPG (US) × 1.2009 = MPG (UK)