Tablespoons to mL converter
1 US tablespoon is 14.7868 mL, and most kitchens round it to 15 mL. To convert tablespoons to mL, multiply by 14.7868.
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3 US tablespoons =
44.3603mL
Formula: mL = tbsp × 14.78676478
Show the steps
- Definition: 1 tbsp = 1/2 US fl oz = 14.78676478125 mL; 1 mL = 0.001 L = 1 cm³
- 3 tbsp × 14.78676478 = 44.3603 mL
Definitions used: 1 tbsp = 1/2 US fl oz = 14.78676478125 mL; 1 mL = 0.001 L = 1 cm³.
Source: NIST Handbook 44 (2026), Appendix C and NIST SP 811, Appendix B.8, checked on .
How to convert US tablespoons to milliliters
Multiply the value in US tablespoons by 14.78676478. The factor follows from the definitions: 1 tbsp = 1/2 US fl oz = 14.78676478125 mL, and 1 mL = 0.001 L = 1 cm³.
mL = tbsp × 14.78676478
Worked example: 3 tbsp to mL
- Definition: 1 tbsp = 1/2 US fl oz = 14.78676478125 mL; 1 mL = 0.001 L = 1 cm³
- 3 tbsp × 14.78676478 = 44.3603 mL
- Answer: 3 tbsp = 44.3603 mL.
US tablespoons to milliliters chart
| US tablespoons (tbsp) | Milliliters (mL) |
|---|---|
| 0.25 | 3.69669 |
| 0.5 | 7.39338 |
| 1 | 14.7868 |
| 1.5 | 22.1801 |
| 2 | 29.5735 |
| 2.5 | 36.9669 |
| 3 | 44.3603 |
| US tablespoons (tbsp) | Milliliters (mL) |
|---|---|
| 4 | 59.1471 |
| 5 | 73.9338 |
| 6 | 88.7206 |
| 8 | 118.294 |
| 10 | 147.868 |
| 12 | 177.441 |
| 16 | 236.588 |
Values rounded to 6 significant digits. Type any other number in the converter at the top of the page.
Is a tablespoon 15 mL or 14.79 mL?
Both are in use. By the US customary definition a tablespoon is half a US fluid ounce, 14.78676478125 mL. For nutrition labeling the FDA sets a tablespoon at 15 mL and a teaspoon at 5 mL (21 CFR 101.9), and NIST Handbook 44 also gives the measuring tablespoon as 15 mL, rounded. The gap is 1.4%, invisible in a recipe.
How many teaspoons are in a tablespoon?
Exactly 3 teaspoons. One US teaspoon is 4.92892 mL, and 16 tablespoons make one US cup (236.59 mL).
More questions about US tablespoons and milliliters
How many mL is 2 tablespoons?
2 US tablespoons is 29.57 mL, which is one US fluid ounce.
How many mL is 1 teaspoon?
1 US teaspoon is 4.929 mL, rounded to 5 mL on labels and medicine spoons.
How many tablespoons is 100 mL?
100 mL is 6.763 US tablespoons, a little under 7.
Should I measure medicine with a kitchen spoon?
No. Household spoons vary a lot. Use the dosing syringe or cup that came with the medicine, and follow the label or your pharmacist.
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Sources and limits
- NIST Handbook 44 (2026), Appendix C
NIST Handbook 44-2026, Appendix C: General Tables of Units of Measurement.
National Institute of Standards and Technology. Edition or effective date: . Text in force when checked on .
- NIST SP 811, Appendix B.8
NIST Special Publication 811, Guide for the Use of the SI, Appendix B.8: Factors for Units Listed Alphabetically (page updated August 18, 2025).
National Institute of Standards and Technology. Edition or effective date: . Text in force when checked on .
- 21 CFR 101.9(b)(5)(viii)
Code of Federal Regulations, Title 21, § 101.9(b)(5)(viii): household measures for nutrition labeling (text in force when checked).
U.S. Food and Drug Administration. Text in force when checked on .
This is a calculation aid, not an official measurement service. Results are rounded to 6 significant digits for display. For trade, engineering, medical dosing or legal documents, confirm the figure in the official source. Nothing you type leaves your browser.