Convert imperial gallons to Cup (Metric)
Western Europe · Cooking Measures · active · modern
Conventional value The unit is customary but its modern value is settled and widely cited; the arithmetic itself is exact.
1 imperial gallon = 18.1844 Cup (Metric)
Cup (Metric) = imperial gallons × 18.18436
Convert any amount
imperial gallons to Cup (Metric) table
| imperial gallons | Cup (Metric) |
|---|---|
| 0.25 imperial gallons | 4.54609 Cup (Metric) |
| 0.5 imperial gallons | 9.09218 Cup (Metric) |
| 1 imperial gallon | 18.1844 Cup (Metric) |
| 2 imperial gallons | 36.3687 Cup (Metric) |
| 3 imperial gallons | 54.5531 Cup (Metric) |
| 4 imperial gallons | 72.7374 Cup (Metric) |
| 5 imperial gallons | 90.9218 Cup (Metric) |
| 10 imperial gallons | 181.844 Cup (Metric) |
| 20 imperial gallons | 363.687 Cup (Metric) |
| 25 imperial gallons | 454.609 Cup (Metric) |
| 50 imperial gallons | 909.218 Cup (Metric) |
| 100 imperial gallons | 1,818.44 Cup (Metric) |
About the Cup (Metric)
Metric cup = 250ml exactly. Used in Australia, NZ.
- Symbol
- cup m
- Value in SI
- 1 Cup (Metric) = 0.25 litre
- Typical use
- cooking
- Source
- UnitConvertLab measurement atlas
Every atlas conversion routes through the SI litre. See our methodology and data provenance pages for how these values are sourced and verified.
Related units and variant risk
Other cooking measures units in the Western Europe family, least settled first. If your figure came from a land record, invoice or historical document rather than a calculator, check these before assuming a single standard.
- Gill (UK) to imperial gallonsHistorically reconstructed
- Teaspoon (Metric) to imperial gallonsConventional value
- Tablespoon (Metric) to imperial gallonsConventional value
- Cup (UK/Imperial) to imperial gallonsConventional value
- Fluid Ounce (UK) to imperial gallonsConventional value
- Gallon (UK) to imperial gallonsConventional value
- Gallon (US) to imperial gallonsConventional value
- Pint (UK) to imperial gallonsConventional value
Related conversions
Frequently asked
How many Cup (Metric) are in a imperial gallon?
1 imperial gallon = 18.1844 Cup (Metric). Multiply the number of imperial gallons by 18.18436 to get Cup (Metric).
What is Cup (Metric) used for?
Metric cup = 250ml exactly. Used in Australia, NZ. It is classified as active and dates from the modern period.
Is the Cup (Metric) value exact?
Yes for practical purposes. UnitConvertLab converts every atlas unit through the SI litre, so the arithmetic itself introduces no rounding beyond the digits shown.
How reliable is this Cup (Metric) conversion?
Conventional value — The unit is customary but its modern value is settled and widely cited; the arithmetic itself is exact. Source: UnitConvertLab measurement atlas.
Cite this page
UnitConvertLab. (2026). Convert imperial gallons to Cup (Metric). UnitConvertLab. Retrieved from https://unitconvertlab.com/regional/imperial-gallon-to-cup-metric
Report an incorrect value or source
Regional units vary by district and by century. If this figure, its variant list or its citation is wrong where you are, tell us — the report carries the page context automatically.