Fuel Consumption / mpg (US) → L/100 km
Convert Miles per US liquid gallon to Liters per 100 kilometers
Convert vehicle fuel use and fuel economy with reciprocal formulas. Convert Miles per US liquid gallon (mpg (US)) to Liters per 100 kilometers (L/100 km). Find the formula, worked examples, unit definitions, and practical guidance below.
Reverse: Liters per 100 kilometers to Miles per US liquid gallon →
How to convert Miles per US liquid gallon to liters per 100 kilometers
Consumption measures fuel per distance; economy measures distance per fuel. Their relationship is reciprocal. US and imperial mpg use different gallons. Inputs must be positive; zero fuel use would imply infinite economy.
Use x for the value in mpg (US), b for the intermediate value in L/100 km, and y for the result in L/100 km.
b = 235.214583333 ÷ x; y = b ÷ 1
Worked examples
10 mpg (US) ≈ 23.5214583333 L/100 km
Step 1: 235.214583333 ÷ 10 ≈ 23.5214583333 L/100 km.
Step 2: 23.5214583333 ÷ 1 ≈ 23.5214583333 L/100 km.20 mpg (US) ≈ 11.7607291667 L/100 km
Step 1: 235.214583333 ÷ 20 ≈ 11.7607291667 L/100 km.
Step 2: 11.7607291667 ÷ 1 ≈ 11.7607291667 L/100 km.
Results are rounded to 12 significant digits. Converting units does not increase the precision of the original measurement. Very large or small values outside JavaScript’s finite numeric range are rejected.
About Miles per US liquid gallon
Miles per US liquid gallon relates inversely to Liters per 100 kilometers. The base value is 235.214583333 ÷ x, where x is the numerical value in mpg (US). A zero or negative reciprocal input is outside this calculator’s physical domain.
About Liters per 100 kilometers
Liters per 100 kilometers (L/100 km) measures fuel consumption under the conventions above. The base value in L/100 km is (x × 1), where x is the numerical value in L/100 km. Factors shown here are rounded for display; calculations use the stored factor.
Definitions and sources
Carry the same physical assumptions into subsequent physics calculations.
Miles per US liquid gallon to liters per 100 kilometers reference table
| Miles per US liquid gallon (mpg (US)) | Liters per 100 kilometers (L/100 km) |
|---|---|
| 1 | 235.214583333 |
| 5 | 47.0429166667 |
| 10 | 23.5214583333 |
| 25 | 9.40858333333 |
| 50 | 4.70429166667 |
| 100 | 2.35214583333 |
| 1000 | 0.235214583333 |
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