Fuel Economy Converter (US MPG, Imperial MPG, L/100km)
Processed in your browser
Convert automotive fuel efficiency between US Miles Per Gallon (MPG), UK Imperial MPG, and metric Liters per 100km (L/100km).
Fuel Economy Rating
International Equivalents
US MPG
30.00
Liters / 100 km
7.84
Imperial UK MPG
36.03
Kilometers / Liter
12.75
⚡
Direct In-Browser Handoff
Automotive & Mechanical Conversion Suite
Chain this tool with complementary private browser utilities for a complete zero-server workflow:
Helpful Examples
Sedan Highway Economy
35 US MPG converted to metric
35 US MPG = 6.72 L/100kmHow to Use the Fuel Economy Converter (US MPG, Imperial MPG, L/100km)
Compare vehicle fuel economy ratings internationally. Convert between US MPG, UK Imperial MPG, km/Liter, and Liters per 100km. Includes trip fuel cost calculation based on distance and local gas price.
Privacy & Data Processing Notice
No user data leaves your browser. Computation is executed entirely on your device. We do not store, view, or transmit your inputs over our network. Your computation remains on your personal machine.
Frequently Asked Questions
Why is L/100km inversely proportional to MPG?
MPG measures distance traveled per volume of fuel (higher is better). L/100km measures fuel volume consumed per fixed distance (lower is better): L/100km = 235.214 / US MPG.
How much bigger is an Imperial gallon than a US gallon?
1 Imperial gallon equals approx 1.20095 US gallons (4.546 L vs 3.785 L).
Related Utilities
Frequently paired browser tools in Unit Conversion Tools