Teaspoons to Tablespoons (tsp to tbsp)

Common questions

How many teaspoons are in a tablespoon?

Three exactly, in US measure, which is why this page divides by 3. Read the other way, 1 tsp is 0.333333333333 tbsp as the converter prints it, a third of a tablespoon. The counts asked for next most often: 1.5 tsp is exactly 0.5 tbsp, 2 tsp is 0.666666666667 tbsp, 4 tsp is 1.33333333333 tbsp, 4.5 tsp is exactly 1.5 tbsp, 6 tsp is 2 tbsp, 9 tsp is 3 tbsp, 12 tsp is 4 tbsp and 48 tsp is 16 tbsp, which is one US cup. Type any of them into the From box and the headline changes without pressing anything.

What is half a tablespoon in teaspoons, and a third of one?

For exact US units, half a tablespoon is 1.5 tsp, one third is 1 tsp, a quarter is 0.75 tsp and two thirds is 2 tsp. Swap units gives US tbsp to US tsp: 0.25 → 0.75, 0.5 → 1.5, 0.75 → 2.25, 1.5 → 4.5 and 2.5 → 7.5. Multiplying a finite decimal by the exact three yields a terminating decimal, but a long product can still round in the twelve-significant-digit display. The scalar field does not accept slash fractions.

Is a tablespoon three teaspoons everywhere?

The US definitions are exactly 4.92892159375 mL per teaspoon and 14.78676478125 mL per tablespoon, with a ratio of three. Separately supplied 5 mL and 15 mL conventions also have that ratio; supplied 5 mL and 20 mL conventions have a ratio of four. Neither metric spoon is a menu entry. Select Milliliter in From: 15 mL displays as 3.04326204317 US tsp or 1.01442068106 US tbsp, and 20 mL as 4.05768272422 US tsp. Country or recipe origin does not establish a convention.

How do I scale a recipe up or down in spoons?

For explicitly supplied US units, doubling 2.5 tsp gives 5 tsp, displaying as 1.66666666667 tbsp and equalling exactly 1 tbsp + 2 tsp. Halving 3 tbsp gives exactly 1.5 tbsp or 4.5 tsp; tripling 1 tsp gives exactly 1 tbsp. Those separate arithmetic examples do not establish recipe suitability. The table’s mixed spoon forms are exact US arithmetic, not inputs accepted here. Ratio Calculator supports separate proportions; Fraction Calculator accepts a mixed number such as 1 3/4 for separate rational arithmetic.

Why does the answer read 0.333333333333 instead of 1/3?

Because the converter prints decimals, to twelve significant digits, and a third never finishes as a decimal. Those digits are the division carried out honestly rather than a rounded factor: the ratio itself is exactly 3. Counts that divide by three come out clean with no trailing digits at all, so 3 tsp is 1, 4.5 tsp is 1.5, 12 tsp is 4 and 48 tsp is 16. If you would rather see thirds than decimals, the fraction calculator works in fractions from end to end and prints a repeating decimal with its period, so a third shows as 0.(3). The Copy result button under the stage copies the headline as it stands, without thousands separators, ready to paste into a spreadsheet.

How many teaspoons are in a cup, and in a quarter cup?

Forty-eight in a US cup, because the cup is 16 tablespoons and every tablespoon is 3 teaspoons. Half a cup is 24 tsp, a third is 16 tsp, a quarter is 12 tsp and an eighth is 6 tsp. The Cup (US) row sits in the list under every answer, so 12 tsp shows there as exactly 0.25 cups while the headline reads 4 tbsp. A US fluid ounce is 6 teaspoons and 2 tablespoons, which is why 1 tsp also reads 0.166666666667 fl oz in that same list.

Can I type a fraction like 1/2 into the box?

Slash fractions are refused. Use a finite decimal scalar, optionally signed, with correctly grouped thousands, scientific notation and a suffix matching From. In US units, 0.25 tsp displays as 0.0833333333333 tbsp, 0.5 as 0.166666666667 tbsp, 0.75 is exactly 0.25 tbsp, and 1,000 tsp displays as 333.333333333 tbsp. A rounded decimal entered here becomes its own quantity.

Is this the dry teaspoon or the liquid one, and are the figures exact?

Teaspoon (US) and Tablespoon (US) are defined volumes of exactly 4.92892159375 mL and 14.78676478125 mL. A supplied US-teaspoon volume has the same size for a dry or liquid material; the tool cannot infer an actual scoop’s fill or convention. The ratio of three is exact, but repeating or long terminating results can round to twelve significant digits. Unit Converter keeps volume and mass separate. A supplied volume does not establish the mass of an ingredient or an actual filled scoop. Mass = volume × an applicable supplied density in matching units, with the material and conditions specified. Grams to Cups uses named ingredient density conventions rather than arbitrary user-entered density; its US cup is rounded to 236.588 mL, while Unit Converter uses exactly 236.5882365 mL.

Does this page keep the pair, and does anything leave my browser?

This focused page opens on Teaspoon (US) to Tablespoon (US), while preserving the main converter’s saved unit pair. When storage is usable, a saved value and uncommon-unit preference can travel between pages. Its suffix must still match From. Valid deliberate scalar edits can save those fields after a short delay; invalid or incomplete drafts preserve the saved record. Unusable or conflicting records remain until you use Forget saved settings, which keeps the current conversion on screen. Your input and converted values are calculated in the browser and are not uploaded by the converter. The definitions arrive with the page, so conversion needs no external data lookup and keeps working offline after the page has loaded. The core conversion needs no account. Copy result copies the displayed headline without digit-grouping commas; each visible conversion row has its own Copy button. Displayed and copied values round to twelve significant digits. If native copying fails, a complete selectable summary identifies the input, selected pair and conventions and includes every unit in the category, including uncommon units.