L/100 km to MPG

Liters per 100 km (L/100 km) to miles per gallon (US) (mpg).

Value

Convert to

39.2024mpg

Precision (significant figures)

Formula

mpg = 235.215 ÷ L/100 km

1 L/100 km = 235.215 mpg

mpg (US) = 235.215 ÷ L/100 km. Lower liters per 100 km means higher mpg, so the conversion divides rather than multiplies: 5 L/100 km is 47.0429 mpg, 8 L/100 km is 29.4018 mpg and 10 L/100 km is 23.5215 mpg.

Formula

Worked example

Start with 6 L/100 km.
Divide 235.215 by the value: 235.215 ÷ 6 = 39.2024 mpg.

L/100km to mpg chart

Liters per 100 km (L/100 km)	Miles per gallon (US) (mpg)
3	78.4049
4	58.8036
4.5	52.2699
5	47.0429
5.5	42.7663
6	39.2024
6.5	36.1869
7	33.6021
7.5	31.3619
8	29.4018
9	26.135
10	23.5215
12	19.6012
15	15.681
20	11.7607
25	9.40858

When you need this conversion

Reading car reviews and specs from Europe, Australia, Canada or Asia, and comparing them with US or UK figures.

Quick reference

4 L/100 km = 58.8036 US mpg (70.6202 UK mpg)
5 L/100 km = 47.0429 US mpg (56.4962 UK mpg)
6 L/100 km = 39.2024 US mpg (47.0802 UK mpg)
7 L/100 km = 33.6021 US mpg (40.3544 UK mpg)
8 L/100 km = 29.4018 US mpg (35.3101 UK mpg)
10 L/100 km = 23.5215 US mpg (28.2481 UK mpg)

Trip fuel

Liters per 100 km makes trip estimates easy: at 6.5 L/100 km, a 350 km drive uses 22.75 L. Multiply the rate by the distance in hundreds of kilometers.

Common mistakes

Multiplying by a factor. The relationship is inverse, so a constant factor gives nonsense.

Mixing test cycles. European WLTP figures and US EPA figures are measured differently, so the same car can show different numbers even after conversion.

For the reverse, use mpg to L/100 km.

Questions

What is 6 L/100 km in mpg?

39.2024 US mpg, or 47.0802 UK mpg.

What is 8 L/100 km in mpg?

29.4018 US mpg.

Is 5 L/100 km good?

Yes. It's 47 US mpg, typical of a hybrid or a small efficient car.

What's the UK constant?

282.481. UK mpg = 282.481 ÷ L/100 km.

Sources

Last reviewed 2026-09-24. How we check values · Report a problem with this page