Miles per US Gallon to Litre per 100 km

Free instant miles per us gallon to litre per 100 km converter. 1 mpg = 235.215 L/100km.

235.215
Formula
1 mpg = 235.215 L/100km

Common Miles per US Gallon to Litre per 100 km values

Common Miles per US Gallon to Litre per 100 km conversion values.
Miles per US Gallon (mpg)Litre per 100 km (L/100km)
1235.215
547.0429
1023.5215
259.40858
504.70429
1002.35215
5000.470429
10000.235215

How does Miles per US Gallon to Litre per 100 km conversion work?

Type a value in the Miles per US Gallon (mpg) field and the equivalent in Litre per 100 km (L/100km) appears instantly to the right. The math uses the exact formula shown above โ€” no rounding errors, no approximations beyond standard floating-point precision. Use the swap button to flip the units and see the inverse conversion.

Miles per US Gallon. The standard fuel-economy unit in the US. HIGHER is better โ€” 30 mpg is decent; 50+ mpg is excellent.

Litre per 100 km. The standard fuel-economy unit in metric countries. LOWER is better โ€” 5 L/100km is fuel-efficient; 12 L/100km is thirsty.

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No submit button โ€” the result updates as you type. Math runs entirely in your browser, so itโ€™s as fast as your device.

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Works in any modern browser โ€” Mac, Windows, Linux, iPhone, Android, tablets. No installation, no signup.

๐ŸŽฏ Accurate conversions

Conversion factors come from the official standard (NIST, BIPM, ISO definitions where applicable). Values are precise to standard floating-point limits.

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Frequently asked

What is the formula for converting Miles per US Gallon to Litre per 100 km?+
The formula is: 1 mpg = 235.215 L/100km. Type any value into the calculator above and the result appears instantly.
How do I convert Litre per 100 km back to Miles per US Gallon?+
Click the swap button (โ‡„) above to go to the Litre per 100 km โ†’ Miles per US Gallon converter, or use the inverse formula derived from the one shown.
How accurate is the conversion?+
Conversion factors used here are exact rational values from NIST SP 811 and the BIPM SI brochure (e.g. 1 ft = 0.3048 m exactly, 1 lb = 0.45359237 kg exactly). Trailing-digit differences vs hand calculation come only from binary floating-point representation, never from the conversion factor itself.
Where do these conversion factors come from?+
Length and mass factors come from the 1959 international yard-and-pound agreement; SI base units (metre, kilogram, second, kelvin) come from the 2019 BIPM redefinition; energy and pressure factors are NIST SP 811 reference values. Each editorial section above lists the specific source for that category.
Can I copy the conversion factor for use elsewhere?+
Yes. The factor in the formula above is the exact rational value used internally; copying it into Excel or another tool reproduces the result to floating-point precision.

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