Utilities / Converter

Fuel Economy Converter

Convert fuel economy and fuel consumption without guessing which gallon or which direction matters. Type into any field and every equivalent updates instantly.

Current conversion

35.00 US mpg = 6.72 L/100 km

● Runs locally

Edit any value. US and Imperial gallons are calculated separately.

Distance per fuel

Higher = farther on the same fuel

Miles per US gallonUS mpg US gallon = 3.785411784 L

Miles per Imperial gallonUK mpg Imperial gallon = 4.54609 L

Kilometres per litrekm/L Metric distance-per-volume

Miles per litremi/L 1 mile = 1.609344 km

Fuel per distance

Lower = less fuel for the same distance

Litres per 100 kilometresL/100 km Common metric fuel-consumption format

Litres per 100 milesL/100 mi Useful for cross-market comparisons

US gallons per 100 milesUS gal/100 mi Consumption form of US mpg

Imperial gallons per 100 milesUK gal/100 mi Consumption form of UK mpg

Live formula

L/100 km = 235.214583333 ÷ US mpg

35 US mpg converts to 6.72 L/100 km. Constants are derived from exact mile and gallon definitions, not rounded shortcuts.

Try a common value

What this efficiency means

Useful context without turning this into a trip-cost calculator.

Fuel used over 1,000 km

67.20 L

At the current efficiency.

Distance on 50 litres

743.99 km

≈ 462.29 miles

Same car shown in UK MPG

42.03 UK mpg

The UK number is higher because an Imperial gallon is larger.