MPG converter
30.0 MPG is 7.8 L/100 km, 12.8 km/L, or 112.4 kWh/100 mi when read as MPGe. Enter a value in any unit and the other four update.
Converted values
30.0 MPG = 7.8 L/100 km = 12.8 km/L = 30.0 MPGe = 112.4 kWh/100 mi
- Miles per gallon (U.S.)
- 30.0 MPG
- Liters per 100 km
- 7.8 L/100 km
- Kilometers per liter
- 12.8 km/L
- Miles per gallon-equivalent
- 30.0 MPGe
- kWh per 100 miles (same energy)
- 112.4 kWh/100 mi
Common values
| MPG or MPGe | L/100 km | km/L | kWh/100 mi |
|---|---|---|---|
| 15 MPG | 15.7 | 6.4 | 224.7 |
| 20 MPG | 11.8 | 8.5 | 168.5 |
| 25 MPG | 9.4 | 10.6 | 134.8 |
| 30 MPG | 7.8 | 12.8 | 112.4 |
| 35 MPG | 6.7 | 14.9 | 96.3 |
| 40 MPG | 5.9 | 17.0 | 84.3 |
| 50 MPG | 4.7 | 21.3 | 67.4 |
| 60 MPG | 3.9 | 25.5 | 56.2 |
| 100 MPG | 2.4 | 42.5 | 33.7 |
What this converter does
It converts fuel economy between the units used on U.S. window stickers (MPG, MPGe and kWh per 100 miles) and the metric units used in most other countries (liters per 100 km and kilometers per liter).
It uses the same constants as the cost calculators on this site, so a value converted here matches the numbers shown on the car pages.
The formulas
MPG to L/100 km: 235.215 ÷ MPG. The constant comes from 3.785 liters in a U.S. gallon and 1.609 km in a mile, and the same expression converts back. Higher MPG is better, while lower L/100 km is better.
km/L: 100 ÷ (L/100 km). It reads the other way round: higher km/L is better.
MPGe and kWh per 100 miles: EPA counts 33.705 kWh as the energy in one gallon of gasoline, so MPGe = 100 × 33.705 ÷ kWh per 100 miles, and the same expression converts back. For a gasoline car MPGe is simply its MPG; the kWh figure then tells you how much electrical energy equals the fuel it burns in 100 miles.
Assumptions and limits
- MPG is U.S. miles per U.S. gallon, as EPA rates cars. UK (imperial) gallons are larger, and this tool does not convert imperial MPG.
- Values must be above zero. Results are shown to one decimal place, so converting a rounded result back can differ slightly from the number you started with.
- The kWh per 100 miles shown for a gasoline car is an energy equivalent, not the electricity an electric car of that size would use.
- EPA's kWh per 100 miles for electric cars is measured at the wall, so it includes charging losses.
Where the numbers come from and how fresh they are:
Frequently asked questions
How do I convert MPG to L/100 km?
Divide 235.215 by the MPG figure. The result is the liters of fuel needed to drive 100 km. Dividing 235.215 by the L/100 km figure gives MPG back. More detail is in the conversion guide.
What is the difference between MPG and MPGe?
MPG counts miles per gallon of fuel. MPGe counts miles per 33.705 kWh, the energy in a gallon of gasoline, so electric cars can be compared with fuel cars. See what MPG and MPGe mean.
Is a higher or lower L/100 km better?
Lower is better: fewer liters are needed to cover 100 km. MPG and km/L work the other way round, where higher means more distance from the same fuel.
How do I convert kWh per 100 miles to MPGe?
Divide 3,370.5 by the kWh per 100 miles. An electric car that uses less electricity per 100 miles has a higher MPGe. The kWh per 100 miles guide explains how to read it.
Why do U.S. and UK MPG figures differ?
A UK gallon is larger than a U.S. gallon, so the same car has a higher MPG on the UK scale. EPA ratings, and this converter, use the U.S. gallon.