To convert miles per gallon (US) to liters per 100 km, use L/100 km = 235.2146 ÷ mpg. Fuel consumption (L/100 km) is the inverse of fuel economy, so you divide rather than multiply. For example, 5 mpg = 47.0429 L/100 km.
What does this tool do?
The mpg to l/100km converter is a fast, no-sign-up converter for fuel economy units such as km/l, mpg and litres per 100 km. Enter any number in the Miles per gallon (US) field and the equivalent in liters per 100 km appears immediately, together with the conversion formula for transparency. You can reverse the conversion with the swap control, choose any of the 4 fuel economy units from the dropdowns, and copy the result in one tap. Everything runs in your browser, so it works on slow connections and never sends your numbers anywhere.
It follows the utility philosophy: open, use, close. No onboarding, no settings to learn, no account to create — the controls are self-explanatory and the result is immediate. That simplicity is why it works as well on a borrowed phone as on your own laptop.
How do I use this tool?
The tool is ready the moment the page opens — no setup, no account. The steps below cover everything it does.
- Type the value into the “Miles per gallon (US)” field.
- Read the converted value in liters per 100 km — the formula used is shown underneath.
- Tap “Copy result” to copy the answer to your clipboard.
- Use the swap button (⇄) to reverse the conversion direction.
- Pick any other fuel economy units from the “From” and “To” dropdowns.
MPG to L/100km formula
L/100 km = 235.2146 ÷ mpg
Fuel consumption (L/100 km) is the inverse of fuel economy, so you divide rather than multiply.
Example: 5 mpg = 47.0429 L/100 km.
Reverse: 1 L/100 km = 235.21458 mpg (see L/100km to MPG).
State lives in the tab: start it, use it, close it. There is no backend to fail, no sync to conflict — which is also why the tool loads instantly and works offline after the first visit.
MPG to L/100km conversion table
| Miles per gallon (US) (mpg) | Liters per 100 km (L/100 km) |
|---|---|
| 1 | 235.215 |
| 2 | 117.607 |
| 3 | 78.4049 |
| 4 | 58.8036 |
| 5 | 47.0429 |
| 6 | 39.2024 |
| 7 | 33.6021 |
| 8 | 29.4018 |
| 9 | 26.135 |
| 10 | 23.5215 |
| 11 | 21.3831 |
| 12 | 19.6012 |
| 15 | 15.681 |
| 20 | 11.7607 |
| 25 | 9.40858 |
| 30 | 7.84049 |
| 40 | 5.88036 |
| 50 | 4.70429 |
| 60 | 3.92024 |
| 70 | 3.36021 |
| 75 | 3.13619 |
| 80 | 2.94018 |
| 90 | 2.6135 |
| 100 | 2.35215 |
| 150 | 1.5681 |
| 200 | 1.17607 |
| 250 | 0.940858 |
| 500 | 0.470429 |
| 1,000 | 0.235215 |
What are these units?
Miles per gallon (US) (mpg): Miles per US gallon.
Liters per 100 km (L/100 km): Fuel used per 100 km; lower is better. Used in Europe and Australia.
Use cases in Pakistan
With petrol prices a constant topic in Pakistan, fuel economy conversion helps car buyers and drivers compare properly. Local conversation runs in kilometres per litre, but imported reviews quote mpg (US or imperial) and European brochures use litres per 100 km. Converting between them shows whether a new car’s claimed average really beats your current one — and helps ride-hailing drivers compute fuel cost per kilometre.
These are the tools people recommend to each other on WhatsApp — simple, free, no install — because they solve the small problems everyone hits: timing something, picking fairly, testing a device. Bookmark the ones you use; they age well.
Limitations
Economy figures are exact conversions of the stated figure, but real mileage depends on driving style, traffic, AC use and fuel quality — treat brochure figures as optimistic. Note that “litres per 100 km” runs inverse to the others: a smaller number means better economy.
Convenience tools are not certified instruments: fine for everyday purposes, but do not stake safety, money or legal outcomes on a browser utility. Know which category your use falls into.
Frequently asked questions
How many liters per 100 km are in a miles per gallon (us)?
There are 235.21458 liters per 100 km in one miles per gallon (us).
How do I convert miles per gallon (US) to liters per 100 km?
L/100 km = 235.2146 ÷ mpg. Fuel consumption (L/100 km) is the inverse of fuel economy, so you divide rather than multiply. Example: 5 mpg = 47.0429 L/100 km.
What is the formula to convert miles per gallon (US) to liters per 100 km?
Litres per 100 km runs inverse to the other fuel-economy units: a smaller number means better economy. The converter applies the exact inverse relationship to your value and shows the result with up to 10 significant figures.
How do I convert liters per 100 km back to miles per gallon (US)?
Tap the swap button (⇄) above the result to reverse the direction instantly, or open the dedicated Liters per 100 km to Miles per gallon (US) converter page.
Can I convert between other fuel economy units?
Yes. The From and To dropdowns list all 4 fuel economy units this converter knows — pick any pair, for example Miles per gallon (US) to kilometers per liter or miles per gallon (uk) to liters per 100 km.
How accurate is the result?
It uses the exact defined values of both units and displays up to 10 significant figures — far more precision than any ruler, scale or bill needs. The conversion itself introduces no error; only the displayed decimals are rounded.
Updated October 2026 · Built and tested by Sharjeel Tahir · How our tools are tested