Imperial Gallons to Liters
Snapshot
1 Imperial Gallon equals 4.54609 Liters. Conversion Encyclopedia uses the same fixed conversion basis across the calculator, common values, and reverse page for this page.
- Reference basis: This result uses fixed marine-capacity definitions for tanks, holds, and onboard volume checks.
- Example: For 2 Imperial Gallon, the result equals 9.09218 Liters.
- Use the reverse page if you need the opposite direction with the same basis.
Use the interactive calculator below for custom values and the common-value table for quick checks.
Converter Calculator
4.54609 Liters (L)
SwitchExplanation
Formula: Liters = Imperial Gallon × 4.54609. Why: tank and hold-capacity units are tied to fixed volume definitions, so the route normalizes through one volumetric basis before applying the target unit.
Imperial Gallons (Imp gal): a UK imperial liquid-volume unit used in some marine and fuel-capacity references.
Liters (L): a metric liquid-volume unit used for smaller tank, fuel, and onboard capacity references.
This route is useful when translating tank, hold, and onboard liquid-capacity values across metric and gallon-based systems for storage, fueling, and vessel operations.
This conversion is purely multiplicative because both units reduce through one fixed marine reference basis for the active family, with no offset.
Common Conversion Values
| Imperial Gallon (Imp gal) | Liters (L) |
|---|---|
| 1 | 4.54609 |
| 2 | 9.09218 |
| 5 | 22.73045 |
| 10 | 45.4609 |
| 20 | 90.9218 |
| 50 | 227.3045 |
| 100 | 454.609 |
Frequently Asked Questions
How many liters are in 1 imperial gallon?
This route uses a fixed factor, so 1 imperial gallon equals 4.54609 liters.
What is the reverse conversion for Imperial Gallons to Liters?
Use the Liters to Imperial Gallons page to reverse the same tank or hold-capacity relationship for onboard volume checks.
Can I use decimal imperial gallons values?
Yes. Decimal imperial gallons values are supported for fueling, storage, and onboard capacity checks.