Teaspoon (US customary) (tsp)
1/3 of a US tablespoon. The US labeling teaspoon (exactly 5 mL) is a different, rounded unit.
What is a US teaspoon?
- Symbol
- tsp
- Quantity
- Volume
- Unit system
- US customary
- Definition
- 1/3 of a US tablespoon. The US labeling teaspoon (exactly 5 mL) is a different, rounded unit.
- Exact
- Yes, the value is exact by definition
- Source
- NIST Special Publication 811 (2008), Appendix B.8 (US liquid measures derive from the exact 231 cubic inch gallon)
Common applications
Used in US recipes and for liquid medicine doses.
Teaspoon (US customary) in other volume units
- 1 tsp = 4.92892159375 mLTeaspoon (US customary) to Milliliter converter
- 1 tsp = 0.00492892159375 LLiter
- 1 tsp = 4.92892159375 cm³Cubic centimeter
- 1 tsp = 0.00000492892159375 m³Cubic meter
- 1 tsp ≈ 0.3333333333 tbspTablespoon (US customary)
- 1 tsp ≈ 0.1666666667 fl ozFluid ounce (US)
- 1 tsp ≈ 0.02083333333 cupCup (US customary)
- 1 tsp ≈ 0.01041666667 ptPint (US liquid)
- 1 tsp ≈ 0.005208333333 qtQuart (US liquid)
- 1 tsp ≈ 0.001302083333 galGallon (US liquid)
- 1 tsp ≈ 0.1734737885 imp fl ozFluid ounce (imperial)
- 1 tsp ≈ 0.008673689423 imp ptPint (imperial)
- 1 tsp ≈ 0.004336844712 imp qtQuart (imperial)
- 1 tsp ≈ 0.001084211178 imp galGallon (imperial)
- 1 tsp = 0.30078125 in³Cubic inch
- 1 tsp ≈ 0.0001740632234 ft³Cubic foot
- 1 tsp ≈ 0.000006446786051 yd³Cubic yard
Teaspoon (US customary) quick reference
| Teaspoon (US customary) | Milliliter | Liter | Gallon (US liquid) |
|---|---|---|---|
| 1 tsp | = 4.92892159375 mL | = 0.00492892159375 L | ≈ 0.001302083333 gal |
| 10 tsp | = 49.2892159375 mL | = 0.0492892159375 L | ≈ 0.01302083333 gal |
| 100 tsp | = 492.892159375 mL | = 0.492892159375 L | ≈ 0.1302083333 gal |
| 1000 tsp | = 4928.92159375 mL | = 4.92892159375 L | ≈ 1.302083333 gal |
Where the US teaspoon fits
The next smaller volume unit is the milliliter (mL). 1 tsp = 4.92892159375 mL, and 1 mL ≈ 0.2028841362 tsp.
The next larger volume unit is the US tablespoon (tbsp). 1 tsp ≈ 0.3333333333 tbsp, and 1 tbsp = 3 tsp.
Frequently asked questions
- How many milliliters are in one US teaspoon?
- One US teaspoon = 4.92892159375 mL (milliliters).
- How many liters are in one US teaspoon?
- One US teaspoon = 0.00492892159375 L (liters).
- How many US gallons are in one US teaspoon?
- One US teaspoon ≈ 0.001302083333 gal (US gallons).