Convert Cup (Metric) to US gallons
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.
Quick answer
1 Cup (Metric) = 0.066043 US gallons
1 Cup (Metric) = 0.066043 US gallons. Cup (Metric) is a traditional volume unit from Western Europe.
Convert any amount
Cup (Metric) to US gallons table
| Cup (Metric) | US gallons |
|---|---|
| 0.25 Cup (Metric) | 0.0165108 US gallons |
| 0.5 Cup (Metric) | 0.0330215 US gallons |
| 1 Cup (Metric) | 0.066043 US gallons |
| 2 Cup (Metric) | 0.132086 US gallons |
| 3 Cup (Metric) | 0.198129 US gallons |
| 4 Cup (Metric) | 0.264172 US gallons |
| 5 Cup (Metric) | 0.330215 US gallons |
| 10 Cup (Metric) | 0.66043 US gallons |
| 20 Cup (Metric) | 1.32086 US gallons |
| 25 Cup (Metric) | 1.65108 US gallons |
| 50 Cup (Metric) | 3.30215 US gallons |
| 100 Cup (Metric) | 6.6043 US gallons |
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.
Frequently asked
How many US gallons are in a Cup (Metric)?
1 Cup (Metric) = 0.066043 US gallons. Multiply the number of Cup (Metric) by 0.066043013 to get US gallons.
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 Cup (Metric) to US gallons. UnitConvertLab. Retrieved from https://unitconvertlab.com/regional/cup-metric-to-us-gallon
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