MPG to Kilometers per Liter Converter
US gallon
3.4
8 MPG = 3.4 km/L
Quick Facts
- •1 MPG (US) ≈ 0.4252 km/L
- •1 MPG (UK) ≈ 0.3540 km/L
- •30 MPG (US) ≈ 12.8 km/L
- •Toggle between US and UK on this page
How to Convert
km/L = MPG (US) ÷ 2.35215
Divide US MPG by 2.35215 to get km/L. For UK MPG, divide by 2.82481.
Exact constant: 1 US gal = 3.785 L; 1 Imp gal = 4.546 L; 1 mi = 1.609 km
Worked Example
Convert 30 MPG:
30 MPG (US) ÷ 2.35215 ≈ 12.76 km/L
Common Conversions
| MPG | km/L |
|---|---|
| 15 | 6.38 |
| 20 | 8.5 |
| 25 | 10.63 |
| 30 | 12.75 |
| 35 | 14.88 |
| 40 | 17.01 |
| 45 | 19.13 |
| 50 | 21.26 |
| 60 | 25.51 |
| 80 | 34.01 |
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Frequently Asked Questions
How do I convert MPG to km/L?
For US MPG: divide by 2.35215. For UK MPG: divide by 2.82481.
What is 25 US MPG in km/L?
25 ÷ 2.352 ≈ 10.63 km/L.
What is 40 UK MPG in km/L?
40 ÷ 2.825 ≈ 14.16 km/L.
Can I compare US and UK MPG directly?
No. Same MPG number means different consumption. Always specify US or UK.
What is a good km/L?
12–15 km/L for petrol, 15–20 km/L for diesel, 20+ km/L for hybrids.