# What is 12 cups to liters?

Converts cups (cup) to liters (L) and back, with the exact unit definitions.

- Page: https://www.acalculator.org/convert/12-cups-to-liters
- JSON spec: https://www.acalculator.org/convert/12-cups-to-liters.json
- Version: 9e3bde604a0b

## Default answer

Example with the default inputs (Cups (cup) 12): 12 cups = 2.839059 L.

## Inputs

| Key | Label | Description |
| --- | --- | --- |
| value | Cups (cup) | The amount in cups to convert. |
| result | Liters (L) | The same amount in liters. |

## Outputs

| Key | Label | Description |
| --- | --- | --- |
| value | Cups (cup) | The amount in cups to convert. |
| result | Liters (L) | The amount in liters. |

## Method

L = cup × 0.2365882365

## Assumptions

- 1 cup = 0.2365882365 liters, from the exact definitions in NIST SP 811.
- Cups, ounces, tablespoons, teaspoons, pints, quarts, and gallons are US customary units: 1 US cup is 8 US fluid ounces.
- Exact on the typed decimals: at most 6 decimal places (6 significant digits below 0.0001), rounded half up; an answer of 1 billion or more shows at most 15 significant digits.

## Worked examples

1. value = 1 gives result = 0.236588. Source: Exact unit definitions in NIST SP 811 (2008), Appendix B.8.
2. value = 4 gives result = 0.946353. Source: Exact unit definitions in NIST SP 811 (2008), Appendix B.8.
3. result = 0.946353 gives value = 4. Source: Exact unit definitions in NIST SP 811 (2008), Appendix B.8.

## FAQ

### What is 12 cups in liters?

12 cups is 2.839059 L. The formula is L = cup × 0.2365882365.

### How many liters are in a cup?

1 cup is 0.236588 liters, from the exact unit definitions (NIST SP 811).

### How do I convert cups to liters?

Multiply by 0.2365882365: L = cup × 0.2365882365. For example, 12 cups × 0.2365882365 = 2.839059 L.

### How do I convert liters back to cups?

Multiply by 4.226753, or type the liters into the second box and the converter works it out. 1 liter is 4.226753 cups.

## Sources

- NIST SP 811 (2008), Guide for the Use of the International System of Units, Appendix B.8: Factors for Units Listed Alphabetically (bold factors are exact), retrieved 2026-10-18. https://www.nist.gov/pml/special-publication-811/nist-guide-si-appendix-b-conversion-factors/nist-guide-si-appendix-b8