Convert Teaspoon (US) (tsp) to Milliliter (mL) (ml)
Category: Volume
1 tsp = 4.928922 ml
High-precision rounding: 6 decimals
How to convert teaspoon (us) to milliliter (ml)
We convert by pivoting through the SI base unit for Volume and applying exact factors where applicable.
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Quick conversion table
Handy values for Teaspoon (US) → Milliliter (mL). Click a value to open that exact result.
Conversion formula
Linear unit conversions use standardized factors; many are exact by definition (e.g., 1 in = 25.4 mm, 1 ft = 0.3048 m).
Common mistakes
- Mixing US gallons (3.785 L) with Imperial gallons (4.546 L).
- Assuming kitchen ‘cup’ equals the same volume in every country.
Unit facts
- Teaspoon (US): A US teaspoon is ≈4.9289 mL; differs by region.
- Milliliter (mL): One milliliter is 1/1000 L, equal to 1 cm³; typical for dosages and lab volumes.
About Volume
Volume measures the space a substance occupies. SI uses cubic meters and liters; customary units like gallons, quarts, and pints persist in recipes, fuel, and containers. Accurate volume work often requires temperature and density considerations (e.g., for fuels).
About Teaspoon (US)
Teaspoon (US)
≈ 4.929 mL. Useful for small volumes and medication dosing. In lab contexts replaced by mL for clarity.
History: Evolved from household spoons; modern practice fixes approximate metric equivalents.
About Milliliter (mL)
Milliliter (mL)
Equals 1/1000 L and exactly 1 cm³. Used for doses, pipetting, coffee shots, and cosmetic volumes.
History: Popularized by laboratory glassware standards and medical dosing practices.