Convert US cups to Imperial gallons
1 cup = 0.05204214 imp gal. Change the amount below, or read the formula and the reference table further down.
1 US cup equals
Imperial gallons
1 cup = 0.05204214 imp gal
The formula
US cups and Imperial gallons both measure volume from the same zero, so a single multiplier does the job.
imp gal = cup × 0.0520421365
Going the other way? Convert Imperial gallons to US cups.
US cups to Imperial gallons table
Common values, rounded for reading.
| US cups (cup) | Imperial gallons (imp gal) |
|---|---|
| 1 | 0.052042 |
| 2 | 0.104084 |
| 3 | 0.156126 |
| 4 | 0.208169 |
| 5 | 0.260211 |
| 6 | 0.312253 |
| 7 | 0.364295 |
| 8 | 0.416337 |
| 9 | 0.468379 |
| 10 | 0.520421 |
| 15 | 0.780632 |
| 20 | 1.0408 |
| 25 | 1.3011 |
| 30 | 1.5613 |
| 40 | 2.0817 |
| 50 | 2.6021 |
| 75 | 3.9032 |
| 100 | 5.2042 |
| 250 | 13.0105 |
| 500 | 26.0211 |
| 1,000 | 52.0421 |
Questions people ask
- How many Imperial gallons are in a US cup?
- One US cup equals 0.0520421365 Imperial gallons.
- How do I convert US cups to Imperial gallons by hand?
- Multiply the number of US cups by 0.0520421365. For a rough check, 0.052 is close enough for most everyday use.
- What is 1 US cup in Imperial gallons?
- 1 US cup is 0.05204214 Imperial gallons.
Calcuit generates this page from a unit table, so the factors here match every other page on the site.