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What is a teaspoon?

The cooking and medication spoon unit — 5 ml standard internationally

Definition

The teaspoon equals 4.929 ml in the US, rounded to 5 ml in most recipes and on medication labels. The relationship 3 teaspoons = 1 tablespoon is universal across US, UK and metric systems. Precision medicine and small-volume cooking rely on teaspoons.

Common uses

  • Baking powder, salt and spices in recipes
  • Over-the-counter liquid-medicine dosing
  • Coffee and tea sweetener measurements

🌍 Real-world scale

1 teaspoon of sugar = 4 g = 16 calories. Salt in a recipe often ½ to 1 tsp per 500 g food.

Convert from teaspoons

14 conversions
Teaspoon to Liter1 tsp = 0.004929 LTeaspoon to Milliliter1 tsp = 4.92892 mlTeaspoon to Cubic Meter1 tsp = 4.9289e-6 m³Teaspoon to US Gallon1 tsp = 0.001302 gal (US)Teaspoon to UK Gallon1 tsp = 0.001084 gal (UK)Teaspoon to Fluid Ounce1 tsp = 0.1667 fl ozTeaspoon to Cup1 tsp = 0.02054 cupTeaspoon to Pint1 tsp = 0.01042 ptTeaspoon to Quart1 tsp = 0.005208 qtTeaspoon to Tablespoon1 tsp = 0.333 tbspTeaspoon to Barrel1 tsp = 3.1002e-5 bblTeaspoon to Cubic Inch1 tsp = 0.3008 in³Teaspoon to Cubic Foot1 tsp = 0.0001741 ft³Teaspoon to Cubic Yard1 tsp = 6.4468e-6 yd³

Convert to teaspoons

14 conversions
Liter to Teaspoon1 L = 202.884 tspMilliliter to Teaspoon1 ml = 0.2029 tspCubic Meter to Teaspoon1 m³ = 202,884.2 tspUS Gallon to Teaspoon1 gal (US) = 768 tspUK Gallon to Teaspoon1 gal (UK) = 922.33 tspFluid Ounce to Teaspoon1 fl oz = 6 tspCup to Teaspoon1 cup = 48.6922 tspPint to Teaspoon1 pt = 96 tspQuart to Teaspoon1 qt = 192 tspTablespoon to Teaspoon1 tbsp = 3.00269 tspBarrel to Teaspoon1 bbl = 32,256.01 tspCubic Inch to Teaspoon1 in³ = 3.32468 tspCubic Foot to Teaspoon1 ft³ = 5,745.04 tspCubic Yard to Teaspoon1 yd³ = 155,116.1 tsp

Tips

  • 1 tsp = 5 ml (practical); 4.929 ml (US legal).
  • 3 tsp = 1 tbsp universally.
  • Use a proper measuring spoon — household teaspoons vary 3–8 ml.

Common mistakes

  • Using a regular cutlery teaspoon for medication — can over- or under-dose by 30–60%.
  • Mixing tsp and tbsp — 3× difference.
  • Assuming "a pinch" or "a dash" is reproducible — it varies 0.1 to 0.5 ml.

FAQ about the teaspoon

What is a teaspoon?
The teaspoon equals 4.929 ml in the US, rounded to 5 ml in most recipes and on medication labels. The relationship 3 teaspoons = 1 tablespoon is universal across US, UK and metric systems. Precision medicine and small-volume cooking rely on teaspoons.
Where is the teaspoon used?
The teaspoon is commonly used for: Baking powder, salt and spices in recipes; Over-the-counter liquid-medicine dosing; Coffee and tea sweetener measurements.
What is an example of a teaspoon in real life?
1 teaspoon of sugar = 4 g = 16 calories. Salt in a recipe often ½ to 1 tsp per 500 g food.
What category does the teaspoon belong to?
The teaspoon is a unit of volume, part of the 15-unit volume category on UnitConv.
How accurate are teaspoon conversions?
All conversion factors follow NIST and BIPM international standards to 8 significant figures — the highest practical accuracy.
Explore all 15 volume units and their conversions.🧪 Volume hub →