Tablespoons to Teaspoons Converter
Convert between tablespoons, teaspoons, millilitres, cups and fluid ounces.
Formula and sources updated · Data sources · 1View algorithm, constants and default inputs (JSON)
1 US tsp ≈ 0.3333333333 US tbsp
About this calculator
Convert the listed US cooking measures and Australian tablespoons. A US tablespoon is about 14.787 ml, a US teaspoon about 4.929 ml, and an Australian tablespoon 20 ml. Other countries may use different spoon or cup standards, so check the recipe’s convention.
Worked example
calculated with the default values below
Value 2 · Unit ⇄ · From US tablespoons · To US teaspoons · Decimal places 4 Result 6 · Tablespoons 2.0000 tbsp · Teaspoons 6.000 tsp · Millilitres 29.57 ml · Cups 0.12500 cups · Fluid ounces 1.000 fl oz
Method and assumptions
V_ml = V₁ × f US factors: tbsp 14.7868 ml, tsp 4.9289 ml, Australian tbsp 20 ml, cup 236.588 ml, fl oz 29.5735 ml. Tablespoons = V_ml ÷ 14.7868; 1 tbsp = 3 tsp. Convert the listed US cooking measures and Australian tablespoons. A US tablespoon is about 14.787 ml, a US teaspoon about 4.929 ml, and an Australian tablespoon 20 ml. Other countries may use different spoon or cup standards, so check the recipe’s convention. The references explain definitions and methods; any extra preset must be checked against the assumptions on this page.
Data sources
The references explain definitions and methods; any extra preset must be checked against the assumptions on this page.
Disclaimer
These calculators give general conversion results. Rounding and the precision of the value you enter both affect the output, so treat displayed decimals as indicative rather than exact.
Implementation source
This record describes the implementation used by this page. It is not independent validation. External references, when available, support only the stated formula or definition; estimates and custom rules retain their own assumptions.
Formula and variables
V_ml = V₁ × f
- V₁
- Entered amount
- f
- Millilitres per source unit
- V_ml
- Amount in millilitres
US factors: tbsp 14.7868 ml, tsp 4.9289 ml, Australian tbsp 20 ml, cup 236.588 ml, fl oz 29.5735 ml. Tablespoons = V_ml ÷ 14.7868; 1 tbsp = 3 tsp.
Frequently asked questions
Why does an Australian tablespoon convert to more millilitres than a US one?
The unit select includes a separate Australian tablespoon at 20 millilitres, while the US tablespoon is 14.787 millilitres, so 2 Australian tablespoons hold 40 millilitres versus 29.57 for US. Teaspoons are fixed at 4.929 millilitres and the tool derives cups by dividing millilitres by 236.588. Choosing tbspau therefore inflates every other output, which is exactly why imported recipes need checking.
Which inputs and limits apply to Tablespoons to Teaspoons Converter?
Use the units shown beside each field. These are form limits, not recommended settings. Value: -1,000,000–1,000,000 V_ml = V₁ × f US factors: tbsp 14.7868 ml, tsp 4.9289 ml, Australian tbsp 20 ml, cup 236.588 ml, fl oz 29.5735 ml. Tablespoons = V_ml ÷ 14.7868; 1 tbsp = 3 tsp. Convert the listed US cooking measures and Australian tablespoons. A US tablespoon is about 14.787 ml, a US teaspoon about 4.929 ml, and an Australian tablespoon 20 ml. Other countries may use different spoon or cup standards, so check the recipe’s convention. The references explain definitions and methods; any extra preset must be checked against the assumptions on this page.
What is a complete worked example for Value = 2; Unit = ⇄?
Inputs: Value = 2; Unit = ⇄; From = US tablespoons; To = US teaspoons; Decimal places = 4. Calculation: V_ml = V₁ × f. Results: Result = 6 US tsp; Tablespoons = 2.0000 tbsp; Millilitres = 29.57 ml; Cups = 0.12500 cups; Fluid ounces = 1.000 fl oz.