Metric Conversion

MPG to Miles Per Litre Calculator

The miles per gallon to miles per litre calculator converts MPG into miles per litre (MPL) and back again. Miles per litre is a practical unit for UK drivers, who measure distance in miles but buy fuel in litres — so this miles per litre calculator bridges the two systems in a single step.

Choose whether your MPG figure is US (3.78541 litres per gallon) or UK Imperial (4.54609 litres per gallon), then convert in either direction. To find miles per litre from MPG, divide by the litres-per-gallon factor; to go back, multiply. The calculator also shows both US and UK MPG plus the L/100km equivalent so every common unit is on screen at once.

Use the reference table below for quick UK MPG to miles-per-litre lookups. For a UK petrol car, 10–12 miles per litre is good, while efficient diesels reach 12–15. Pair this with our UK MPG and MPG to L/100km calculators for complete unit coverage.

Gallon Type

MPG → convert

Miles Per Litre → convert

UK MPG ↔ Miles Per Litre Reference Table

UK MPG	Miles/Litre	L/100km
30	6.60	9.42
35	7.70	8.07
40	8.80	7.06
45	9.90	6.28
50	11.00	5.65
55	12.10	5.14
60	13.20	4.71
65	14.30	4.35

How to Use

Choose US or UK gallons.
To convert MPG, type a value and click Convert to Miles Per Litre.
To convert miles per litre, type a value and click Convert to MPG.
Press Enter in either field to convert without clicking.

Got Questions?

MPG to Miles Per Litre FAQ

What is miles per litre (MPL)? +

Miles per litre measures how many miles your car travels on one litre of fuel. It is less common than MPG or L/100km but useful for UK drivers who buy fuel in litres but think in miles.

How do I convert UK MPG to miles per litre? +

Divide UK MPG by 4.54609. For example, 50 UK MPG ÷ 4.546 = 11.0 miles per litre.

How do I convert miles per litre to UK MPG? +

Multiply miles per litre by 4.54609. For example, 10 miles per litre × 4.546 = 45.46 UK MPG.

What is a good miles per litre figure? +

For a UK petrol car, 10–12 miles per litre is good. Diesel cars often achieve 12–15. Below 8 miles per litre suggests poor efficiency.

Why do UK drivers use miles but buy fuel in litres? +

The UK uses miles for road distances (a legacy of imperial measurement) but sells fuel in litres (metric). This mismatch means miles per litre is the most practical daily measure for many UK drivers.