How to Convert US cups to Litres (cup to L)
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 litres by hand, with examples and a quick-reference table.
The conversion
To convert us cups to litres, multiply the value by 0.236588. To go the other way, divide by the same number (or multiply by 4.2267570629). For a quick estimate, multiply by about 0.24.
Litres = us cups × 0.236588
Worked examples
- 3 cup = 0.709764 L
- 12.5 cup = 2.9573 L
- 75 cup = 17.7441 L
US cups to Litres table
| US cups | Litres |
|---|---|
| 1 cup | 0.236588 L |
| 2 cup | 0.473176 L |
| 5 cup | 1.1829 L |
| 10 cup | 2.3659 L |
| 20 cup | 4.7318 L |
| 25 cup | 5.9147 L |
| 50 cup | 11.8294 L |
| 100 cup | 23.6588 L |
| 250 cup | 59.147 L |
| 500 cup | 118.294 L |
| 1,000 cup | 236.588 L |
Common questions
Is cup to L 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 Litres to US cups converter.
Mistakes to avoid
Dropping the units
A bare number without a unit is easy to misread later. Always write the unit with the result.
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.
Mixing similar-sounding units
US and imperial gallons, pints and tons are different sizes, and decimal kilobytes differ from binary kibibytes.
Background
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.
Singapore adopted the metric system in the 1970s, replacing imperial units and traditional Chinese measures in most official uses. Metric units are now standard in schools, trade and government, but older units survive in property, markets and imported goods.
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 Litres Converter or browse all volume converters.
Run your own numbers: US cups to Litres Converter