Convert volume units — liters, gallons, cups, milliliters, cubic meters, barrels and more.
| Unit | Name | Value |
|---|---|---|
| 0.001 tsp | 2.08333e-05 cup | |
| 0.01 tsp | 0.000208333 cup | |
| 0.1 tsp | 0.00208333 cup | |
| 1 tsp | 0.0208333 cup | |
| 5 tsp | 0.104167 cup | |
| 10 tsp | 0.208333 cup | |
| 50 tsp | 1.04167 cup | |
| 100 tsp | 2.08333 cup | |
| 1000 tsp | 20.8333 cup |
Common teaspoon values converted to us cup — factor: 1 tsp = 0.02083 cup
| Teaspoon (tsp) | US Cup (cup) | Context |
|---|---|---|
| 0.25 tsp | 0.005208 cup | Pinch |
| 0.5 tsp | 0.01042 cup | Half teaspoon |
| 1 tsp | 0.02083 cup | Teaspoon |
| 2 tsp | 0.04167 cup | Two teaspoons |
| 3 tsp | 0.0625 cup | Tablespoon |
| 6 tsp | 0.125 cup | 2 tablespoons |
| 12 tsp | 0.25 cup | Quarter cup |
| 24 tsp | 0.5 cup | Half cup |
| 48 tsp | 1 cup | One cup |
| 96 tsp | 2 cup | One pint |
| 192 tsp | 4 cup | One quart |
| 384 tsp | 8 cup | Half gallon |
| 768 tsp | 16 cup | One gallon |
| 1,536 tsp | 32 cup | 2 gallons |
| 3,840 tsp | 80 cup | 5 gallons |
Converting teaspoon to us cup comes up frequently in cooking, chemistry, medicine, and engineering. A recipe written in metric units may need to be adapted for a kitchen using us cup, or a laboratory protocol may specify volumes in teaspoon that need to be measured with equipment calibrated in us cup.
In everyday use, knowing that 5 tsp = 0.1042 cup and 10 tsp = 0.2083 cup covers most common situations. For bulk calculations, 100 tsp = 2.083 cup is a useful anchor. The reverse conversion — us cup back to teaspoon — uses the factor 48, so 1 cup = 48 tsp.
All conversions use the internationally recognized factor of exactly 1 tsp = 0.02083 cup. Calculations are performed in IEEE 754 double-precision floating point, giving accuracy to at least 8 significant figures — more than sufficient for any practical application.
Formula: US Cup = Teaspoon × 0.020833347
Multiply any teaspoon value by 0.020833347 to get us cup. One teaspoon equals 0.020833347 cup.
Reverse: Teaspoon = US Cup × 47.999968
Teaspoons ÷ 48 = cups. Exact.
3 tsp = 1 tbsp, 16 tbsp = 1 cup, so 48 tsp = 1 cup.
Cups × 48 = tsp.
Measures baking powder, baking soda, salt, and spices in teaspoons, the backbone of baking.
Administers children's liquid medicine in teaspoon doses as per OTC label instructions.
Tests flavor compound thresholds using teaspoon additions in sensory evaluation panels.
Adds clarifying agents and pH adjusters in teaspoon quantities to fermentation batches.
Formulates serums and toners using teaspoon measurements for small test batches.
Doses water conditioners and fertilizers in teaspoons for planted tanks and reef systems.
The US teaspoon is exactly one-third of a tablespoon, 4.92892 mL. It was standardized in the US in the early 20th century partly to address inconsistent home medication dosing.
Teaspoons are the smallest standard cooking measure in the US system, used for spices, leaveners, and flavorings. A medical teaspoon dose conventionally means 5 mL.
Interesting fact: The teaspoon is behind one of science's most cited comparisons: the entire Pacific Ocean would fill roughly 7.1 × 10²³ teaspoons.
The US customary cup is defined as exactly 8 US fluid ounces, or 236.588 mL. It was standardized by Fannie Farmer in her 1896 cookbook The Boston Cooking-School Cook Book.
The cup is the backbone of US baking: nearly every American recipe uses cup measurements for flour, sugar, butter, and liquids. Standard sets include 1 cup, ½ cup, ⅓ cup, and ¼ cup.
Interesting fact: Australia uses a metric cup of 250 mL, slightly larger than the US cup, which can cause recipe confusion in international cooking.