# What is 900 ml to cups?

Converts milliliters (mL) to cups (cup) and back, with the exact unit definitions.

- Page: https://www.acalculator.org/convert/900-ml-to-cups
- JSON spec: https://www.acalculator.org/convert/900-ml-to-cups.json
- Version: 70f886faf594

## Default answer

Example with the default inputs (Milliliters (mL) 900): 900 mL = 3.804078 cups.

## Inputs

| Key | Label | Description |
| --- | --- | --- |
| value | Milliliters (mL) | The amount in milliliters to convert. |
| result | Cups (cup) | The same amount in cups. |

## Outputs

| Key | Label | Description |
| --- | --- | --- |
| value | Milliliters (mL) | The amount in milliliters to convert. |
| result | Cups (cup) | The amount in cups. |

## Method

cup = mL × 0.00422675283773 (the same as mL ÷ 236.5882365)

## Assumptions

- 1 milliliter = 0.00422675283773 cups, 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 = 0.004227. Source: Exact unit definitions in NIST SP 811 (2008), Appendix B.8.
2. value = 250 gives result = 1.056688. Source: Exact unit definitions in NIST SP 811 (2008), Appendix B.8.
3. result = 1 gives value = 236.588237. Source: Exact unit definitions in NIST SP 811 (2008), Appendix B.8.

## FAQ

### What is 900 ml in cups?

900 mL is 3.804078 cups. The formula is cup = mL × 0.00422675283773 (the same as mL ÷ 236.5882365).

### How many cups are in a milliliter?

1 milliliter is 0.004227 cups, from the exact unit definitions (NIST SP 811).

### How do I convert ml to cups?

Divide by 236.5882365: cup = mL × 0.00422675283773 (the same as mL ÷ 236.5882365). For example, 900 mL ÷ 236.5882365 = 3.804078 cups.

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

Multiply by 236.588237, or type the cups into the second box and the converter works it out. 1 cup is 236.588237 milliliters.

## 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