# What is 1/4 cup to tablespoons?

Converts cups (cup) to tablespoons (tbsp) and back, with the exact unit definitions.

- Page: https://www.acalculator.org/convert/1-4-cup-to-tablespoons
- JSON spec: https://www.acalculator.org/convert/1-4-cup-to-tablespoons.json
- Version: 5376ac62a9fe

## Default answer

Example with the default inputs (Cups (cup) 0.25): 1/4 cup = 4 tbsp.

## Inputs

| Key | Label | Description |
| --- | --- | --- |
| value | Cups (cup) | The amount in cups to convert. |
| result | Tablespoons (tbsp) | The same amount in tablespoons. |

## Outputs

| Key | Label | Description |
| --- | --- | --- |
| value | Cups (cup) | The amount in cups to convert. |
| result | Tablespoons (tbsp) | The amount in tablespoons. |
| amount | Amount | The amount in cups, as the fraction when it is the page's value. |

## Method

tbsp = cup × 16

## Assumptions

- 1 cup = 16 tablespoons, 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 = 16. Source: Exact unit definitions in NIST SP 811 (2008), Appendix B.8.
2. value = 0.75 gives result = 12. Source: Exact unit definitions in NIST SP 811 (2008), Appendix B.8.
3. result = 12 gives value = 0.75. Source: Exact unit definitions in NIST SP 811 (2008), Appendix B.8.

## FAQ

### What is 1/4 cup in tablespoons?

1/4 cup is 4 tbsp. The formula is tbsp = cup × 16.

### How many tablespoons are in a cup?

1 cup is 16 tablespoons, from the exact unit definitions (NIST SP 811).

### How do I convert cups to tablespoons?

Multiply by 16: tbsp = cup × 16. For example, 1/4 cup × 16 = 4 tbsp.

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

Multiply by 0.0625, or type the tablespoons into the second box and the converter works it out. 1 tablespoon is 0.0625 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