This online calculator converts liters (L) to UK (Imperial) gallons (gal Imp) using the statutory exact factor. Liter (L or l) is accepted for use with the SI as 1 cubic decimeter (dm³). The Imperial gallon is defined in UK legislation as exactly 4.54609 liters. See the official definitions: BIPM SI Brochure and UK Units of Measurement Regulations 1995 (Schedule).
Liters (L) to UK Gallons (gal Imp) Converter
Enter a value in liters (L) below and press the button to convert it to UK (Imperial) gallons.
Liters (L)
Result in UK Gallons (gal Imp)
How to Use
- Enter the volume in liters (L) into the input field.
- Click Convert to compute UK gallons (gal Imp).
- Adjust Decimal Places (0–10) to control rounding of the result and the shown calculation step.
- Use Copy Result to place the output value on your clipboard.
- Use Clear All to reset inputs, result, and calculation trace.
- Press Swap button for reverse conversion.
Definitions of Measurement Units
Liter (L) — Non-SI unit accepted for use with the SI; exactly 1 cubic decimeter (1 L = 1 dm³ = 0.001 m³). In printing and practice, “L” is widely recommended to avoid confusion with the digit 1. Cross-system reference: 1 L = 0.2199692483 gal Imp (exact by definition via 4.54609 L per gal Imp). Sources: BIPM SI Brochure; NIST: SI Units—Volume.
UK (Imperial) gallon (gal Imp) — Legal UK unit of capacity defined as exactly 4.54609 liters. System: Imperial. Cross-system reference: 1 gal Imp = 4.54609 L (exact). Source: UK Units of Measurement Regulations 1995 (Schedule).
Conversion Formula
From liters to UK gallons:
gal Imp = L ÷ 4.54609.
From UK gallons to liters:
L = gal Imp × 4.54609.
Exact factor per UK law: The Units of Measurement Regulations 1995, Schedule.
Conversion Table
| Liters (L) | UK Gallons (gal Imp) |
|---|---|
| 0.10 | 0.021997 |
| 0.25 | 0.054992 |
| 0.50 | 0.109985 |
| 0.75 | 0.164977 |
| 1.00 | 0.219969 |
| 2.00 | 0.439938 |
| 3.00 | 0.659908 |
| 5.00 | 1.099846 |
| 7.50 | 1.649769 |
| 10.00 | 2.199692 |
| 12.00 | 2.639631 |
| 15.00 | 3.299539 |
| 20.00 | 4.399385 |
| 25.00 | 5.499231 |
| 30.00 | 6.599077 |
| 40.00 | 8.798770 |
| 50.00 | 10.998462 |
| 75.00 | 16.497694 |
| 100.00 | 21.996925 |
| 150.00 | 32.995387 |
Real-World Examples
- Soft drink can (330 mL): 0.33 L = 0.0725899 gal Imp.
- Water bottle (500 mL): 0.50 L = 0.1099846 gal Imp.
- Wine bottle (750 mL, ISO): 0.75 L = 0.1649769 gal Imp.
- Standard 1 L bottle: 1.00 L = 0.2199692 gal Imp.
- Large soda bottle: 2.00 L = 0.4399385 gal Imp.
- Small fuel can: 5.00 L = 1.0998462 gal Imp.
- NATO jerrycan: 20.00 L = 4.3993850 gal Imp.
- Beer cask (firkin): 9 gal Imp = 40.91481 L (exact).
- Beer barrel: 36 gal Imp = 163.65924 L (exact).
- Fermentation bucket: 25.00 L = 5.4992312 gal Imp.
What do you use this calculator for? If you need any other volume tools or unit combinations, please tell us in the comments—we’ll prioritize the most requested ones.
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