Litres to US Cups Converter
Convert litres to US customary cups. The result uses a US cup of 8 US fluid ounces, not a recipe-defined 250 mL cup.
Enter a zero or positive amount. Decimal values are supported. Only the displayed result is rounded.
Reference: NIST Guide to the SI, Appendix B.9 (volume conversion factors). The displayed result is rounded; it is a unit conversion, not a measurement of water need.
Formula
US cups = L × 1,000 ÷ 236.5882365
Example: 1 L is about 4.227 US customary cups.
About these units
NIST lists a US cup at approximately 236.588 mL. Kitchen recipes may use a different defined cup volume, so check the recipe if precision matters.
Everyday conversion examples
This page converts litres to US customary cups only. It uses 236.5882365 mL per cup, so its result is not the same as a recipe that defines a cup as 250 mL.
| Litres | US customary cups |
|---|---|
| 0.25 | 1.057 |
| 0.5 | 2.113 |
| 1 | 4.227 |
| 2 | 8.454 |
Examples are rounded for readability. Use the calculator above for another amount; it keeps the conversion factor until the final display.
How many US cups are in one litre?
One litre is about 4.227 US customary cups using the factor on this page.
Can I use this result for a 250 mL recipe cup?
This particular tool reports US customary cups. For recipes specifying 250 mL cups, use the cups converter and select that cup size.
Source
Conversion factors are based on customary and metric volume relationships documented by the National Institute of Standards and Technology (NIST), Guide to the SI, Appendix B.9. NIST reports rounded factors; this page displays a rounded result.