# US tablespoons to milliliters converter

> Convert US tablespoons to milliliters (tablespoons to ml) with the exact factor, a conversion chart and worked steps.

Interactive version: https://www.calcopenly.com/conversion/tablespoons-to-ml
Subject: Unit converters

Tablespoon amounts often describe dressings, oils or a scaled recipe. A US tablespoon and an Australian tablespoon are different measures. Choose the convention in the source recipe and use level measuring spoons; a heaped spoon has no fixed volume.

One US tablespoon is exactly 14.7867647813 milliliters, so 2 tbsp is 29.57353 mL. To convert tablespoons to ml, multiply by 14.7867647813; to convert back, multiply by 0.0676280454.

The US tablespoon is half a fluid ounce, exactly 14.78676478125 mL. Because both units are defined exactly, the factor above is exact and the results here carry no conversion error.

## Inputs

- **US tablespoons (tbsp)**

## Results

- Milliliters (mL) — main result
- Conversion
- 1 mL in US tablespoons (tbsp)

## Formula

$$
\text{milliliters} = \text{US tablespoons} \times 14.7867647813
$$

## Worked examples

### 2 tbsp to mL

- US tablespoons (tbsp): 2 tbsp
- **Milliliters: 29.5735295625 mL**
- Checked against: Exact-fraction computation from the legal unit definitions (scripts/gen-pairs.py, Python fractions)

### 8 tbsp to mL

- US tablespoons (tbsp): 8 tbsp
- **Milliliters: 118.29411825 mL**
- Checked against: Exact-fraction computation from the legal unit definitions (scripts/gen-pairs.py, Python fractions)

### 0.5 tbsp to mL

- US tablespoons (tbsp): 0.5 tbsp
- **Milliliters: 7.39338239063 mL**
- Checked against: Exact-fraction computation from the legal unit definitions (scripts/gen-pairs.py, Python fractions)

## Questions

### When would I convert tablespoons to ml?

Tablespoon amounts often describe dressings, oils or a scaled recipe. A US tablespoon and an Australian tablespoon are different measures. Choose the convention in the source recipe and use level measuring spoons; a heaped spoon has no fixed volume.

### How many milliliters are in a US tablespoon?

One US tablespoon is exactly 14.7867647813 milliliters. The US tablespoon is half a fluid ounce, exactly 14.78676478125 mL.

### How do you convert tablespoons to ml?

Multiply the number of US tablespoons by 14.7867647813. For example, 2 tbsp × 14.7867647813 = 29.57353 mL. To go the other way, divide by 14.7867647813.

### How can I estimate tablespoons to ml without a calculator?

Multiply by 15. That is 1.4% high of the exact factor 14.7867647813, so 2 tbsp comes out as 30 mL instead of 29.5735.

### How accurate is the US tablespoons to milliliters converter?

Accuracy depends on your inputs and the method's assumptions. Decimal arithmetic uses 50 significant digits, but estimates, numerical methods and source data can be less precise; the displayed rounding does not remove those limits. It is checked against 3 worked examples whose answers come from independent sources; for example, “2 tbsp to mL” is checked against Exact-fraction computation from the legal unit definitions (scripts/gen-pairs.py, Python fractions).

### Where does the method come from?

NIST SP 811 (2008), Guide for the Use of the International System of Units, Appendix B; NIST Handbook 44, Appendix C: General tables of units of measurement; BIPM, The International System of Units (SI Brochure), 9th edition.

## Sources

- [NIST SP 811 (2008), Guide for the Use of the International System of Units, Appendix B](https://www.nist.gov/pml/special-publication-811)
- [NIST Handbook 44, Appendix C: General tables of units of measurement](https://www.nist.gov/pml/weights-and-measures/publications/nist-handbooks/handbook-44)
- [BIPM, The International System of Units (SI Brochure), 9th edition](https://www.bipm.org/en/publications/si-brochure)