Teaspoons to Milliliters Converter
Convert US teaspoons (tsp) to milliliters (mL)
Teaspoon (US)
Definition: The US teaspoon (symbol: tsp or t) is a unit of volume used primarily in cooking and baking. One US teaspoon equals exactly 4.92892 milliliters, or ⅙ fluid ounce. There are 3 teaspoons in 1 tablespoon, and 48 teaspoons in 1 cup.
History/origin: The teaspoon as a measurement evolved from the actual spoon used for stirring tea. It was standardized in the United States as exactly ⅙ fluid ounce (4.92892 mL) to create consistency in recipes. The teaspoon is one of the most commonly used measurements in American cooking, particularly for small quantities of ingredients like spices, extracts, baking powder, and salt.
Current use: The US teaspoon is ubiquitous in American cooking and baking recipes. It's the standard measurement for small quantities of both liquid and dry ingredients like vanilla extract, salt, pepper, spices, baking powder, and baking soda. The teaspoon is also commonly used in medicine for dosing liquid medications. Converting teaspoons to milliliters is essential for international recipe conversions, scientific precision, and understanding metric measurements.
Milliliter
Definition: The milliliter (symbol: mL or ml) is a metric unit of volume equal to one-thousandth of a liter. One milliliter equals exactly one cubic centimeter (1 cm³). The milliliter is part of the International System of Units (SI) and is the standard unit for measuring small liquid volumes worldwide.
History/origin: The milliliter was derived from the liter, which was first defined in 1795 during the French Revolution. The prefix "milli-" means one-thousandth, so one milliliter is 0.001 liters. The milliliter is convenient for measuring small quantities and is widely used in medicine, chemistry, and cooking.
Current use: The milliliter is used worldwide for measuring small volumes in cooking, medicine, chemistry, and everyday life. It's the standard unit for liquid medications, beverage servings, cooking ingredients, and laboratory measurements. Converting US teaspoons to milliliters is essential for following international recipes, scientific precision, and using metric measuring tools.
Teaspoons to Milliliters Conversion Table
| Teaspoons [tsp] | Milliliters [mL] |
|---|---|
| 0.5 tsp | 2.464 mL |
| 1 tsp | 4.929 mL |
| 2 tsp | 9.858 mL |
| 3 tsp | 14.787 mL |
| 5 tsp | 24.645 mL |
| 10 tsp | 49.289 mL |
| 15 tsp | 73.934 mL |
| 20 tsp | 98.578 mL |
| 25 tsp | 123.223 mL |
| 50 tsp | 246.446 mL |
How to Convert Teaspoons to Milliliters
Formula:
1 tsp (US) = 4.92892 mL
1 mL = 0.20288 tsp (US)
mL = tsp × 4.92892
Quick Approximation:
Multiply tsp by 5 for a rough estimate in milliliters
This gives a close approximation: 1 tsp ≈ 5 mL
Common Conversions:
½ tsp = 2.464 mL (about 2.5 mL)
1 tsp = 4.929 mL (about 5 mL)
2 tsp = 9.858 mL (about 10 mL)
3 tsp = 14.787 mL (1 tablespoon)
5 tsp = 24.645 mL (about 25 mL)
10 tsp = 49.289 mL (about 50 mL)
Useful Relationships:
1 teaspoon = 4.929 mL = ⅓ tbsp = ⅙ fl oz
1 tablespoon (3 tsp) = 14.787 mL = ½ fl oz
1 cup (48 tsp) = 236.588 mL = 8 fl oz
1 fluid ounce (6 tsp) = 29.574 mL
Examples:
Convert 1 teaspoon to milliliters:
1 tsp × 4.929 = 4.929 mL
This is approximately 5 milliliters (very common measurement)
Convert 2 teaspoons to milliliters:
2 tsp × 4.929 = 9.858 mL
This is approximately 10 milliliters
Convert 3 teaspoons to milliliters:
3 tsp × 4.929 = 14.787 mL
This is approximately 15 milliliters (equals 1 tablespoon)
Convert 5 teaspoons to milliliters:
5 tsp × 4.929 = 24.645 mL
This is approximately 25 milliliters
Convert 10 teaspoons to milliliters:
10 tsp × 4.929 = 49.289 mL
This is approximately 50 milliliters