Litres per 100 km to Miles per UK gallon
Type a value in Litres per 100 km and get the result in Miles per UK gallon, calculated exactly.
30 Litres per 100 km ≈ 9.416031211 Miles per UK gallon
Exact factorRounded for display to about 10 significant digits.
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Formula
mpg (UK) = 282.480936332 ÷ L/100 km
Litres per 100 km and Miles per UK gallon are inversely related: divide 282.480936332 by the value in Litres per 100 km to get Miles per UK gallon.
Worked examples
- 1 L/100 km ≈ 282.4809363 mpg (UK)
- 30 L/100 km ≈ 9.416031211 mpg (UK)
- 100 L/100 km ≈ 2.824809363 mpg (UK)
This factor is exact by definition.
Conversion table
| Litres per 100 km (L/100 km) | Miles per UK gallon (mpg (UK)) |
|---|---|
| 10 | ≈ 28.24809 |
| 15 | ≈ 18.83206 |
| 20 | ≈ 14.12405 |
| 25 | ≈ 11.29924 |
| 30 | ≈ 9.416031 |
| 35 | ≈ 8.070884 |
| 40 | ≈ 7.062023 |
| 45 | ≈ 6.277354 |
| 50 | ≈ 5.649619 |
| 60 | ≈ 4.708016 |
| 70 | ≈ 4.035442 |
Values marked ≈ are rounded; the rest are exact.
Reverse table: Miles per UK gallon to Litres per 100 km
| Miles per UK gallon (mpg (UK)) | Litres per 100 km (L/100 km) |
|---|---|
| 10 | ≈ 28.24809 |
| 15 | ≈ 18.83206 |
| 20 | ≈ 14.12405 |
| 25 | ≈ 11.29924 |
| 30 | ≈ 9.416031 |
| 35 | ≈ 8.070884 |
| 40 | ≈ 7.062023 |
| 45 | ≈ 6.277354 |
| 50 | ≈ 5.649619 |
| 60 | ≈ 4.708016 |
| 70 | ≈ 4.035442 |
Unit definitions
- Litres per 100 km L/100 km
- Litres of fuel used to travel 100 kilometres; lower is more economical.
- Miles per UK gallon mpg (UK)
- Miles travelled per imperial gallon: about 0.354006 km/L.
Questions people ask
Litres per 100 km to Miles per UK gallon: what is the conversion factor?
One L/100 km is ≈ 282.4809363 mpg (UK).
How do I convert Litres per 100 km to Miles per UK gallon?
Use the formula above. For example, 30 L/100 km = ≈ 9.416031211 mpg (UK).
Is the conversion exact?
Yes. Both units have exact definitions, so the factor is exact; a result is only rounded when its decimals never end.
Factors checked 19 October 2026.