10 mpg (US) to km/L — 10 US miles per gallon in kilometres per litre
10 mpg (US) → 4.251437 km/L
10 US miles per gallon in other units
| Litres per 100 km | 23.521458 | L/100 km |
|---|---|---|
| Imperial miles per gallon | 12.009499 | mpg (UK) |
| Kilometres per litre | 4.251437 | km/L |
| Miles per litre | 2.641721 | mi/L |
mpg (US) to km/L at a glance
| US miles per gallon | Kilometres per litre |
|---|---|
| 1 mpg (US) | 0.42514371 km/L |
| 2 mpg (US) | 0.85028741 km/L |
| 3 mpg (US) | 1.275431 km/L |
| 5 mpg (US) | 2.125719 km/L |
| 10 mpg (US) | 4.251437 km/L |
| 20 mpg (US) | 8.502874 km/L |
| 25 mpg (US) | 10.628593 km/L |
| 50 mpg (US) | 21.257185 km/L |
| 100 mpg (US) | 42.514371 km/L |
| 250 mpg (US) | 106.285927 km/L |
| 500 mpg (US) | 212.571854 km/L |
| 1,000 mpg (US) | 425.143707 km/L |
How to convert US miles per gallon to kilometres per litre
Multiply by 0.42514371 — one US mile per gallon is 0.42514371 kilometres per litre.
Working 10 mpg (US) → 4.251437 km/L
In words: about four kilometres per litre.
Questions
How many kilometres per litre are in a US mile per gallon?
One US mile per gallon is 0.42514371 kilometres per litre.
What is 10 US miles per gallon in kilometres per litre?
10 US miles per gallon is 4.251437 kilometres per litre. The working is 10 mpg (US) → 4.251437 km/L.
Why can't I convert mpg with a simple multiplier?
Because the two measures run in opposite directions. Miles per gallon counts distance per unit of fuel; litres per 100 km counts fuel per unit of distance. One is the reciprocal of the other, so you divide rather than multiply.
Why is UK mpg always a bigger number than US mpg?
The Imperial gallon is about 20% larger, so the same car travels further on one of them. A car rated 30 mpg in the US is around 36 mpg in the UK, with nothing about the car having changed.
Going from 15 to 20 mpg, or 30 to 40 mpg — which saves more fuel?
The first, by a wide margin. Over 10,000 miles the 15-to-20 change saves about 167 gallons; the 30-to-40 change saves about 83. This is exactly the trap the inverse relationship sets, and why litres per 100 km is the easier measure to reason with.