Uk Gallons to Us Gallons
An imperial (UK) gallon is 4.546 liters, about 20% larger than the US gallon, still used for fuel economy in the UK. A US gallon is 3.785 liters, the standard unit for fuel and milk sold by volume in the US. 1 gal UK equals ≈1.20095 gal, so converting between them is a matter of multiplying by that fixed factor — type any value into the converter below and both sides update instantly as you type.
Both units belong to volume, measured here against volume's base unit (L) — every other volume unit on this site converts through that same reference point, which is why the table below can also be read as a quick cross-check against nearby values.
Formula
gal = gal UK × ≈1.20095
gal UK = gal × ≈0.832674
Worked example: 5 gal UK × ≈1.20095 = ≈6.00475 gal.
Conversion table
| Gallon (UK) (gal UK) | Gallon (US) (gal) |
|---|---|
| 1 gal UK | ≈1.20095 gal |
| 2 gal UK | ≈2.4019 gal |
| 3 gal UK | ≈3.60285 gal |
| 5 gal UK | ≈6.00475 gal |
| 10 gal UK | ≈12.0095 gal |
| 20 gal UK | ≈24.019 gal |
| 25 gal UK | ≈30.0237 gal |
| 50 gal UK | ≈60.0475 gal |
| 100 gal UK | ≈120.095 gal |
| 250 gal UK | ≈300.237 gal |
| 500 gal UK | ≈600.475 gal |
| 1,000 gal UK | ≈1,200.95 gal |
Frequently asked
- How many Gallons (US) in a gallon (uk)?
- 1 gal UK equals ≈1.20095 gal.
- How do I convert Gallons (UK) to Gallons (US)?
- Multiply the value in gal UK by ≈1.20095 to get gal. The converter above does this instantly as you type.
- Is the conversion exact?
- Yes — Gallon (UK) and Gallon (US) are both defined by a fixed conversion factor to volume's base unit (L), so the result shown is exact to the precision displayed, not an approximation.