Direct conversion
Convert liter per 100 kilometers [L/100 km] to gallon (UK) per 100 miles [gal/100 mi UK] instantly with formula, examples, chart, and FAQs.
Quick answer
Use the calculator below for any custom value, then check the formula, examples, chart, and reverse conversion links.
Fuel economy uses reciprocal conversion: 1 liter per 100 kilometers [L/100 km] = 0.354006 gallon (UK) per 100 miles [gal/100 mi UK]. Enter any value for the exact reciprocal result.
Fuel economy uses reciprocal conversion: 1 liter per 100 kilometers [L/100 km] = 0.354006 gallon (UK) per 100 miles [gal/100 mi UK]. Enter any value for the exact reciprocal result.
Example: 1 liter per 100 kilometers [L/100 km] equals 0.354006 gallon (UK) per 100 miles [gal/100 mi UK].
Fuel consumption conversions use liter per 100 kilometers as the reference unit. Economy units such as mpg and km/L use reciprocal formulas.
Displayed results are rounded for readability. The calculator keeps enough precision for everyday use and switches to scientific notation for very large or very small values. Last reviewed: 2026-05-21.
Liters per 100 kilometers measures how much fuel a vehicle uses to travel 100 kilometers.
HistoryThe unit became common in metric countries because it expresses fuel consumption directly.
Current useL/100 km is used for vehicle efficiency labels, trip planning, fuel cost estimates, and fleet comparisons.
The gallon (UK) per 100 miles (gal/100 mi UK) is a fuel consumption unit used to express measurements in this converter.
HistoryThis unit is included because it appears in practical measurement systems, technical references, product specifications, or everyday conversion needs.
Current useUse gallon (UK) per 100 miles when comparing fuel consumption values, checking specifications, converting between systems, or preparing quick estimates.
| liter per 100 kilometers [L/100 km] | gallon (UK) per 100 miles [gal/100 mi UK] |
|---|---|
| 1 | 0.354006 |
| 2 | 0.708012 |
| 5 | 1.770031 |
| 10 | 3.540062 |
| 15 | 5.310093 |
| 20 | 7.080124 |
| 25 | 8.850155 |
| 30 | 10.620186 |
| 40 | 14.160248 |
Use this formula: Fuel economy uses reciprocal conversion: 1 liter per 100 kilometers [L/100 km] = 0.354006 gallon (UK) per 100 miles [gal/100 mi UK]. Enter any value for the exact reciprocal result. Enter your value in the calculator and the result updates instantly.
1 liter per 100 kilometers [L/100 km] equals 0.354006 gallon (UK) per 100 miles [gal/100 mi UK].
Yes. Use the swap button in the calculator or open the related reverse conversion link when it is listed on this page.