Fuel Economy Converter
Convert between kilometres per litre (km/L), miles per gallon US (MPG US), miles per gallon UK (MPG UK), and litres per 100 kilometres (L/100km). Essential for comparing vehicle efficiency.
1 km/L = 2.352144215 MPG (US)
1 km/L in all units
| Unit | Value |
|---|---|
| km/Linput | 1 |
| MPG (US) | 2.352144215 |
| MPG (UK) | 2.824810879 |
| L/100km | 100 |
How to Use the Fuel Economy Converter
- 1
Select the fuel economy unit you want to convert FROM (e.g. MPG US).
- 2
Enter the numeric value.
- 3
Select the unit you want to convert TO (e.g. L/100km).
- 4
The result appears instantly.
- 5
Use the ⇄ swap button to reverse.
- 6
See all units in the table below.
Fuel Economy Conversion Formulas
L/100km = 100 ÷ (km/L)
MPG(US) = km/L × 2.35215
MPG(UK) = km/L × 2.82481
Note: L/100km is an inverse measure.
Lower L/100km = better fuel economy.Frequently Asked Questions
What is the difference between MPG US and MPG UK?
A US gallon = 3.785 L, a UK gallon = 4.546 L. So 1 MPG(UK) ≈ 1.201 MPG(US). A car rated 40 MPG(UK) ≈ 33.3 MPG(US).
How do I convert L/100km to MPG?
MPG(US) = 235.215 ÷ L/100km. For example, 8 L/100km = 235.215 ÷ 8 ≈ 29.4 MPG(US).
Is lower L/100km better?
Yes. L/100km measures how many litres are consumed per 100 km. Lower is more fuel-efficient. 5 L/100km is more efficient than 10 L/100km.
What is a good fuel economy?
A fuel-efficient car typically achieves 4–6 L/100km (40–60 MPG US). SUVs and trucks typically use 8–12 L/100km (20–30 MPG US).