Imperial MPG to L/100 km Converter
Imperial MPG to L/100 km Converter. Convert imperial fuel economy units. Enter your values and view the result.
Imperial MPG to L/100 km Converter
Convert imperial fuel economy units.
Use the calculation engine below to model your exact costs with custom fuel prices, distances, and vehicle efficiencies:
Imperial MPG to L/100 km Converter: inputs
Adjust sliders or enter exact figures
Monthly Fuel Budget
Real-Time Visual Breakdown
Comparing your expense against alternative vehicle classes
Price Fluctuation Stress Test
See how unexpected gas price surges would impact your monthly budget
How Imperial MPG to L/100 km Converter Works
This tool works by dividing the constant 282.481 by miles per imperial gallon, which gives liters per 100 kilometers.
- Step 1
Enter imperial MPG
Type the fuel economy in miles per imperial gallon, the unit used in the United Kingdom (UK).
- Step 2
Apply the constant
The converter divides 282.481 by the imperial MPG value.
- Step 3
Read L/100 km
The converter shows L/100 km and the matching US MPG.
- Step 4
Convert back
Enter L/100 km to get imperial MPG.
Imperial MPG to L/100 km Converter Formula
The formula divides 282.481 by imperial MPG.
L/100 km = 282.481 ÷ Imperial MPG
US MPG = Imperial MPG × 0.8327
- 282.481
- = 100 × 4.54609 L per imperial gallon ÷ 1.609344 km per mile
- 0.8327
- = ratio of the US gallon to the imperial gallon
Worked Example
- A UK hatchback is advertised at 55 MPG (imperial).
- L/100 km = 282.481 ÷ 55 = 5.14 L/100 km.
- US MPG = 55 × 0.8327 = 45.8 US MPG.
- The same car looks 20% more efficient in UK MPG than in US MPG, though fuel use is identical.
Imperial MPG to L/100 km Converter Conversion Table
The table lists imperial MPG values with L/100 km and US MPG equivalents.
| Imperial MPG | L/100 km | US MPG | km/L |
|---|---|---|---|
| 20 | 14.12 | 16.7 | 7.08 |
| 25 | 11.30 | 20.8 | 8.85 |
| 30 | 9.42 | 25.0 | 10.62 |
| 35 | 8.07 | 29.1 | 12.39 |
| 40 | 7.06 | 33.3 | 14.16 |
| 45 | 6.28 | 37.5 | 15.93 |
| 50 | 5.65 | 41.6 | 17.70 |
| 55 | 5.14 | 45.8 | 19.47 |
| 60 | 4.71 | 50.0 | 21.24 |
| 65 | 4.35 | 54.1 | 23.01 |
| 70 | 4.04 | 58.3 | 24.78 |
| 80 | 3.53 | 66.6 | 28.32 |
What is an Imperial MPG to L/100 km Converter?
An Imperial MPG to L/100 km Converter is a unit conversion tool that changes miles per imperial gallon into liters per 100 kilometers.
The imperial gallon holds 4.546 liters, 20% more than the US gallon of 3.785 liters. UK car adverts quote imperial MPG, while UK fuel is sold by the liter. The Imperial MPG to L/100 km Converter connects the advertised figure with the liters bought at the pump.
Mixing up imperial and US MPG is a common error in online car comparisons. The converter shows both side by side.
What are the uses of an Imperial MPG to L/100 km Converter?
There are 4 main uses of the Imperial MPG to L/100 km Converter, including UK fuel budgeting, US-UK comparisons, and European rating checks.
Budget UK fuel in liters
Turn advertised MPG into liters per 100 km for pump math.
Compare UK and US figures
Convert UK MPG into US MPG for a fair comparison.
Check European ratings
Compare UK adverts with Worldwide Harmonised Light Vehicles Test Procedure (WLTP) figures in L/100 km.
Read older Canadian data
Convert imperial MPG from older Canadian sources.