Miles per Litre (MPL) to MPG Converter
Convert miles per litre (MPL) to miles per gallon (MPG). Formula: MPG (UK) = MPL × 4.54609. Results in UK, US, L/100km and km/L.
How to Convert Miles per Litre to MPG
The conversion is linear — a gallon is simply a fixed number of litres, so multiplying MPL by the gallon size gives MPG.
- MPG (UK) = MPL × 4.54609
- MPG (US) = MPL × 3.785411784
Constants come from exact definitions: 1 Imperial gallon = 4.54609 L, 1 US gallon = 3.785411784 L.
Common MPL to MPG Conversions
| MPL | MPG (UK) | MPG (US) | L/100km |
|---|---|---|---|
| 3 MPL | 13.6 | 11.4 | 20.7 |
| 4 MPL | 18.2 | 15.1 | 15.5 |
| 5 MPL | 22.7 | 18.9 | 12.4 |
| 6 MPL | 27.3 | 22.7 | 10.4 |
| 7 MPL | 31.8 | 26.5 | 8.88 |
| 8 MPL | 36.4 | 30.3 | 7.77 |
| 9 MPL | 40.9 | 34.1 | 6.90 |
| 10 MPL | 45.5 | 37.9 | 6.21 |
| 11 MPL | 50.0 | 41.6 | 5.65 |
| 12 MPL | 54.6 | 45.4 | 5.18 |
| 13 MPL | 59.1 | 49.2 | 4.78 |
| 14 MPL | 63.6 | 53.0 | 4.44 |
| 15 MPL | 68.2 | 56.8 | 4.14 |
Frequently Asked Questions
How do I convert miles per litre to MPG?
Multiply your MPL value by 4.54609 to get MPG (UK), or by 3.785411784 to get MPG (US). Example: 10 MPL × 4.54609 = 45.5 MPG (UK), and 10 MPL × 3.78541 = 37.9 MPG (US).
Is miles per litre the same as MPG?
No. MPG (miles per gallon) uses gallons — 4.54609 L for Imperial, 3.78541 L for US. MPL (miles per litre) uses the litre, which is what UK pumps dispense. 10 MPL equals about 45.5 MPG (UK) or 37.9 MPG (US).
Why convert MPL to MPG?
UK car brochures and EPA window stickers still quote MPG. If you measure your real consumption as MPL at the pump (miles driven ÷ litres filled), converting to MPG lets you compare directly with the manufacturer’s claimed figure.
Related Fuel Economy Converters
When to Convert MPL Back to MPG
Most UK drivers measure real-world fuel economy in miles per litre (MPL): it’s the number that falls out naturally when you divide miles driven by the litres pumped into the tank. But almost every official figure — manufacturer brochures, EPA window stickers, company-car tax tables — is still quoted in miles per gallon (MPG). Converting MPL to MPG lets you put your observed number next to the advertised number and see how close the claim was to reality.
The conversion is a one-step multiplication: MPG (UK) = MPL × 4.54609. If you are comparing against an American car brochure, use MPG (US) = MPL × 3.78541 instead.
Example: Validating a Manufacturer’s Claim
Say your car is advertised at 55 MPG (UK) combined. Over a 400-mile trip you burn 41 litres of fuel. Your real MPL is 400 ÷ 41 = 9.76 MPL, which converts to 9.76 × 4.54609 = 44.4 MPG (UK). That’s about 80% of the claim — typical for mixed motorway/urban driving, since manufacturer figures come from controlled WLTP cycles.
This is why fleet managers and careful car-buyers track MPL at every fill-up and only convert to MPG when they need to talk to a dealer or an accountant.
Full Conversion Table
Need a printable reference? See the full Miles per Litre to MPG conversion table with pre-calculated values, CSV download, and print-friendly layout.
