How to Convert US cups to Cubic metres (cup to m³)
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 us cups into cubic metres by hand, with examples and a quick-reference table.
The conversion
To convert us cups to cubic metres, multiply the value by 0.000236588. To go the other way, divide by the same number (or multiply by 4,226.7570629111). Because the factor is tiny, scientific notation keeps the numbers manageable.
Cubic metres = us cups × 0.000236588
Worked examples
- 3 cup = 0.00071 m³
- 12.5 cup = 0.002957 m³
- 75 cup = 0.017744 m³
US cups to Cubic metres table
| US cups | Cubic metres |
|---|---|
| 1 cup | 0.000237 m³ |
| 2 cup | 0.000473 m³ |
| 5 cup | 0.001183 m³ |
| 10 cup | 0.002366 m³ |
| 20 cup | 0.004732 m³ |
| 25 cup | 0.005915 m³ |
| 50 cup | 0.011829 m³ |
| 100 cup | 0.023659 m³ |
| 250 cup | 0.059147 m³ |
| 500 cup | 0.118294 m³ |
| 1,000 cup | 0.236588 m³ |
Common questions
Is cup to m³ 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 Cubic metres to US cups converter.
Mistakes to avoid
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.
Mixing similar-sounding units
US and imperial gallons, pints and tons are different sizes, and decimal kilobytes differ from binary kibibytes.
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
Many conversion factors are exact by definition. The inch has been defined as exactly 2.54 centimetres since 1959, and the pound as exactly 0.45359237 kilograms, so conversions involving them can be as precise as you need.
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.
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.
For any value, use the US cups to Cubic metres Converter or browse all volume converters.
Run your own numbers: US cups to Cubic metres Converter