⛽ Fuel Efficiency

MPG (US) to km/L Converter

Convert MPG (US) to km/L instantly: 1 MPG (US) = 0.425144 km/L. Free converter with the formula, a reference table and FAQs — no sign-up.

Quick answer: To convert MPG (US) to km/L, multiply by 0.425144. For example, 1 MPG (US) = 0.425144 km/L. Use the calculator below for any value.
MPG (US) to km/L
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Common conversions
MPG (US) km/L
Formula:

How to convert MPG (US) to km/L

1

Enter your value

Type the number of mpg (us) you want to convert into the left box. The result in km/l appears instantly in the right box. You can also type into the right box to convert in the other direction.

2

Use the swap button

Click the ⇄ Swap button to reverse the conversion — km/L to MPG (US). Your current value carries across so you don't have to re-enter anything.

3

About MPG (US) and km/L

MPG (US) and km/L are common fuel measurements.

Worked examples: MPG (US) to km/L

Multiply the MPG (US) value by 0.425144 to get km/L. A few quick examples:

  • 5 MPG (US) × 0.425144 = 2.12572 km/L
  • 25 MPG (US) × 0.425144 = 10.6286 km/L
  • 250 MPG (US) × 0.425144 = 106.286 km/L
📊 Common conversions at a glance
MPG (US) km/L
15 6.377
20 8.503
25 10.63
30 12.75
35 14.88
40 17.01
Reviewed for 2026. MPG (US) ↔ km/L conversion factor verified against published reference data. Built by a UK-based qualified primary teacher and FA Level 2 coach as part of 247QuickTools' free utility-tools project.

Frequently asked questions

How do I convert MPG (US) to km/L?

To convert MPG (US) to km/L, multiply by 0.425144. Or use the calculator above for instant results.

How many km/L are in 1 MPG (US)?

1 MPG (US) equals 0.425144 km/L.

Is the MPG (US) to km/L converter free?

Yes, the MPG (US) to km/L converter is completely free with no sign-up required, no downloads, and it works offline once the page has loaded.