Metric & imperial volumes
Gallons and litres and pints, oh my!
| Gal | Liter |
| 1gal | 3.79L |
| 2gal | 7.57L |
| 3gal | 11.53L |
| 4gal | 15.14L |
| 5gal | 18.93L |
| 6gal | 22.71L |
| 7gal | 26.50L |
| 8gal | 30.28L |
| 9gal | 34.16L |
| 10gal | 37.94L |
| 50gal | 189.7L |
| 100gal | 379.4L |
| Liter | Gal |
| 1L | 0.26gal |
| 2L | 0.53gal |
| 3L | 0.79gal |
| 4L | 1.06gal |
| 5L | 1.32gal |
| 6L | 1.58gal |
| 7L | 1.85gal |
| 8L | 2.11gal |
| 9L | 2.38gal |
| 10L | 2.64gal |
| 50L | 13.2gal |
| 100L | 26.4gal |
One liter ("litre" in British English) equals roughly a quarter of a gallon (i.e. a quart).
Actually, there are 3.8 liters in 1 gallon, so a litre is a tad less than a quart, but for estimating, that will work.
Now, Brits have started accepting that water and wine and such are sold by the litre, but when it comes to a glass of beer in the pub, those are still strictly sold by the pint (or half-pint).
A pint is 20 oz. (in metric, 568 ml—or a shade more than half a liter).
An imperial gallon is equal to 8 pints (4.5 litres).
