How to Convert Cubic centimetres to US cups (cm³ to cup)
Volume conversions help with baking from American recipes, comparing petrol prices quoted per gallon abroad with pump prices per litre here, and reading PUB water bills in cubic metres. This guide shows how to convert cubic centimetres into us cups by hand, with examples and a quick-reference table.
The conversion
To convert cubic centimetres to us cups, multiply the value by 0.0042267571. To go the other way, divide by the same number (or multiply by 236.588). For a quick estimate, multiply by about 0.0042.
US cups = cubic centimetres × 0.0042267571
Worked examples
- 3 cm³ = 0.01268 cup
- 12.5 cm³ = 0.052834 cup
- 75 cm³ = 0.317007 cup
Cubic centimetres to US cups table
| Cubic centimetres | US cups |
|---|---|
| 1 cm³ | 0.004227 cup |
| 2 cm³ | 0.008454 cup |
| 5 cm³ | 0.021134 cup |
| 10 cm³ | 0.042268 cup |
| 20 cm³ | 0.084535 cup |
| 25 cm³ | 0.105669 cup |
| 50 cm³ | 0.211338 cup |
| 100 cm³ | 0.422676 cup |
| 250 cm³ | 1.0567 cup |
| 500 cm³ | 2.1134 cup |
| 1,000 cm³ | 4.2268 cup |
Common questions
Is cm³ to cup exact?
The factors used here are the internationally defined values where they exist; results are rounded for display only.
How do I convert back?
Use the US cups to Cubic centimetres converter.
Mistakes to avoid
Rounding the factor too early
Using 3 instead of 3.28 for feet per metre introduces an error of almost 9% before you have started.
Forgetting squared and cubed units
Area and volume factors are the length factor squared or cubed, so 1 m² is about 10.76 sq ft, not 3.28.
Multiplying when you should divide
Converting to a smaller unit gives a bigger number, and converting to a larger unit gives a smaller one. If your answer moves the wrong way, you have inverted the factor.
Background
Writing the units next to every number while you work is the simplest way to avoid mistakes. If the units do not cancel to leave the one you want, the calculation is set up wrongly.
A conversion table is handy for common values, but a calculator is faster and avoids interpolation errors for anything in between.
Unit conversion is simply multiplication by a fixed ratio. The ratio between two units of the same quantity never changes, so once you know it you can convert any value in either direction.
For any value, use the Cubic centimetres to US cups Converter or browse all volume converters.
Run your own numbers: Cubic centimetres to US cups Converter