Volume conversion
Liter to Imperial gallon converter
Convert L to imp gal instantly, choose the displayed precision, and verify the result with the formula and reference table below.
Imperial gallon (imp gal)
Rounded for display only; calculations retain full precision.
Rounding and precision rules
- Convr calculates first and rounds the displayed result only once, at the final step.
- The default is a maximum of 6 decimal places; trailing zeros are removed.
- Very small values that would appear as zero, and values of 10¹² or more, use scientific notation.
- Display precision is not measurement uncertainty. For scientific, engineering, or regulated work, retain only the digits justified by the source measurement.
Practical context
Understanding this conversion
Imperial gallons occur in historical and current UK-related fuel economy, vehicle records, tank capacities, and some trade contexts. Liters are the standard metric volume used for most modern international specifications.
The word “gallon” is ambiguous without a system label. This page specifically uses the Imperial gallon, not the smaller US liquid gallon or the separate US dry gallon.
Reviewed August 16, 2026.
Calculation
Liter to Imperial gallon formula
imp gal = L × 0.219969
Calculations retain full precision and the result is rounded only for display.
Worked example
For 10 L, the result is 2.199692 imp gal. Substitute 10 L into the formula to obtain 2.199692 imp gal.
A numerical value expressed in imperial gallon is usually smaller than the same measurement expressed in liter, because 1 L equals 0.219969 imp gal.
Liter to Imperial gallon reference table
Common values rounded to a maximum of 6 decimal places.
| Liter (L) | Imperial gallon (imp gal) |
|---|---|
| 1 L | 0.219969 imp gal |
| 5 L | 1.099846 imp gal |
| 10 L | 2.199692 imp gal |
| 50 L | 10.998462 imp gal |
| 100 L | 21.996925 imp gal |
Understanding the units
About Liter and Imperial gallon
Liter (L)
Liter (L) is the base unit used by Convr for volume calculations.
Imperial gallon (imp gal)
One imperial gallon (imp gal) equals 4.54609 L, the base relationship used for this volume conversion.
When this conversion is useful
Liter to Imperial gallon conversion is useful for recipes, beverage quantities, fuel volumes, laboratory measurements, and container capacities. It lets you compare the same volume or capacity across documents, tools, or standards that use different units.
Learn with Convr
Conversion guides
Metric vs Imperial Units: A Practical Comparison
Understand how metric, US customary, and Imperial units differ, where each system is used, and how to convert between them reliably.
Read guide →Everyday conversionsUS Gallons vs Imperial Gallons: What Is the Difference?
Compare US liquid gallons and Imperial gallons, understand their exact liter values, and avoid common fuel and recipe conversion errors.
Read guide →Answers at a glance
Frequently asked questions
How many liters are in an Imperial gallon?
One Imperial gallon is exactly 4.54609 liters, so one liter is approximately 0.219969 Imperial gallon.
Is the Imperial gallon larger than the US gallon?
Yes. An Imperial gallon is about 20 percent larger than a US liquid gallon and the two must not be treated as equivalent.
How does Convr round Liter to Imperial gallon results?
Convr keeps full numeric precision during the calculation and rounds only the displayed result. The default is a maximum of 6 decimal places, with selectable precision on this page.
Can I convert negative or decimal liter values?
Yes. The converter accepts positive, negative, decimal, and scientific-notation values. Negative values are physically meaningful for some scales, such as temperature, but not for every measured quantity.
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