Convert Cup (US) to US cups
Americas · 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 Cup (US) = 0.999999 US cups
US cups = Cup (US) × 0.999999
Convert any amount
Cup (US) to US cups table
| Cup (US) | US cups |
|---|---|
| 0.25 Cup (US) | 0.25 US cups |
| 0.5 Cup (US) | 0.5 US cups |
| 1 Cup (US) | 0.999999 US cups |
| 2 Cup (US) | 2 US cups |
| 3 Cup (US) | 3 US cups |
| 4 Cup (US) | 4 US cups |
| 5 Cup (US) | 5 US cups |
| 10 Cup (US) | 9.99999 US cups |
| 20 Cup (US) | 20 US cups |
| 25 Cup (US) | 25 US cups |
| 50 Cup (US) | 50 US cups |
| 100 Cup (US) | 99.9999 US cups |
About the Cup (US)
US cup = 236.6ml = 8 fl oz.
- Symbol
- cup US
- Value in SI
- 1 Cup (US) = 0.236588 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 Americas 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 If your figure came from a land record, invoice or historical document rather than a calculator, check these before assuming a single standard.
Related conversions
Frequently asked
How many US cups are in a Cup (US)?
1 Cup (US) = 0.999999 US cups. Multiply the number of Cup (US) by 0.999999 to get US cups.
What is Cup (US) used for?
US cup = 236.6ml = 8 fl oz. It is classified as active and dates from the modern period.
Is the Cup (US) 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 (US) 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 (US) to US cups. UnitConvertLab. Retrieved from https://unitconvertlab.com/regional/cup-us-to-us-cup
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