MPG to L/100 km Converter
Updated Formulas shown
Divide 235.215 by US miles per gallon to get liters per 100 km: 30 mpg = 7.84 L/100 km. Because one is distance per fuel and the other fuel per distance, it's a division, not a multiplication.
Formula: L/100 km = 235.215 ÷ miles per gallon (US)
Common values: miles per gallon (US) → liters per 100 km
| miles per gallon (US) | liters per 100 km |
|---|---|
| 23.5215 L/100 km | |
| 15.681 L/100 km | |
| 11.7607 L/100 km | |
| 9.40858 L/100 km | |
| 7.84049 L/100 km | |
| 6.72042 L/100 km | |
| 5.88036 L/100 km | |
| 4.70429 L/100 km | |
| 3.92024 L/100 km |
30 mpg in every fuel economy unit
- 36.0285 mpg (UK)
- 12.7543 km/L
- 7.84049 L/100 km
How to convert miles per gallon (US) to liters per 100 km
- Type the value in miles per gallon (US) into the converter (or into the right-hand box to go the other way).
- Divide 235.215 by the mpg figure — the scales are inverse, so a higher mpg gives a lower L/100 km.
- Round to a sensible precision with the Decimals control; the table below covers the values people look up most.
Mile per gallon (US) to liter per 100 km formula
L/100 km = 235.215 ÷ miles per gallon (US). 235.215 is 100 × 3.785411784 L ÷ 1.609344 km, rounded to 6 digits; the converter uses the exact ratio.
mpg to L/100 km conversion table
| mpg (US) | L/100 km | km/L | mpg (UK) |
|---|---|---|---|
| 10 | 23.52 | 4.25 | 12 |
| 12 | 19.6 | 5.1 | 14.4 |
| 14 | 16.8 | 5.95 | 16.8 |
| 16 | 14.7 | 6.8 | 19.2 |
| 18 | 13.07 | 7.65 | 21.6 |
| 20 | 11.76 | 8.5 | 24 |
| 22 | 10.69 | 9.35 | 26.4 |
| 24 | 9.8 | 10.2 | 28.8 |
| 26 | 9.05 | 11.05 | 31.2 |
| 28 | 8.4 | 11.9 | 33.6 |
| 30 | 7.84 | 12.75 | 36 |
| 32 | 7.35 | 13.6 | 38.4 |
| 34 | 6.92 | 14.45 | 40.8 |
| 36 | 6.53 | 15.31 | 43.2 |
| 38 | 6.19 | 16.16 | 45.6 |
| 40 | 5.88 | 17.01 | 48 |
| 42 | 5.6 | 17.86 | 50.4 |
| 44 | 5.35 | 18.71 | 52.8 |
| 46 | 5.11 | 19.56 | 55.2 |
| 48 | 4.9 | 20.41 | 57.6 |
| 50 | 4.7 | 21.26 | 60 |
| 52 | 4.52 | 22.11 | 62.4 |
| 54 | 4.36 | 22.96 | 64.9 |
| 56 | 4.2 | 23.81 | 67.3 |
| 58 | 4.06 | 24.66 | 69.7 |
| 60 | 3.92 | 25.51 | 72.1 |
| 70 | 3.36 | 29.76 | 84.1 |
| 80 | 2.94 | 34.01 | 96.1 |
| 100 | 2.35 | 42.51 | 120.1 |
Why L/100 km makes savings clearer
Going from 10 to 12 mpg saves more fuel than going from 30 to 40 mpg: 23.5 → 19.6 L/100 km (−3.9 L) versus 7.8 → 5.9 L/100 km (−1.9 L). Fuel-per-distance makes that obvious. It matters for work trucks: a truck towing a trailer at 10 mpg burns 10 gallons per 100 miles of supply runs.
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Frequently asked questions
What is 30 mpg in L/100 km?
7.84 L/100 km.
What is 8 L/100 km in mpg?
29.4 US mpg (35.3 UK mpg).
Why are UK mpg numbers higher?
An imperial gallon (4.546 L) is 20% larger than a US gallon (3.785 L), so the same car goes further per gallon.
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Estimates only. Check quantities with your supplier or contractor before ordering.