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Volume Converter

US Teaspoon to Milliliter Converter

Convert US Teaspoon (tsp) to Milliliter (mL) instantly with our interactive tool, benchmark tables, and detailed unit information.

1 tsp = 4.9289 mL
Editable
tsp
Input
Auto-Calculated
mL
Result
Volume conversion — instant results

Convert US Teaspoon to Milliliter

1 tsp = 4.9289 mL
US Teaspoon (tsp) Milliliter (mL)
1 tsp 4.928921 mL
5 tsp 24.644605 mL
10 tsp 49.28921 mL
25 tsp 123.223025 mL
50 tsp 246.44605 mL
100 tsp 492.8921 mL
500 tsp 2,464.4605 mL
1,000 tsp 4,928.921 mL

Convert Milliliter to US Teaspoon

1 mL = 0.2029 tsp
Milliliter (mL) US Teaspoon (tsp)
1 mL 0.202884 tsp
5 mL 1.014421 tsp
10 mL 2.028842 tsp
25 mL 5.072104 tsp
50 mL 10.144208 tsp
100 mL 20.288416 tsp
500 mL 101.44208 tsp
1,000 mL 202.884161 tsp

About US Teaspoon and Milliliter

Detailed information about both units of measurement.

US UNIT

US Teaspoon

tsp
Definition
A US customary unit of volume equal to 1/3 of a tablespoon or about 4.93 mL.
SI / Standard Information
Defined as exactly 4.92892159375 mL. The teaspoon is used globally for medicine dosing and cooking.
Approximate Comparison
A teaspoon is about the volume of a standard medicine cup or the tip of a thumb.
Practical Applications
  • Medicine and supplement dosing
  • Cooking spice and extract measurement
  • Tea and coffee preparation
  • Small recipe ingredient scaling
Real-World Examples
  • A standard dose of liquid medicine is 1 teaspoon (5 mL)
  • A cup of coffee typically uses 2 teaspoons of grounds
  • Vanilla extract is commonly measured in teaspoons
METRIC UNIT

Milliliter

mL
Definition
One-thousandth of a liter. Commonly used in medicine, cooking, and laboratory measurements.
SI / Standard Information
SI-derived unit (mL). 1 mL = 1 cm³ exactly. The milliliter is the most practical unit for small liquid volumes.
Approximate Comparison
A milliliter is about 20 drops of water or the volume of a small sugar cube.
Practical Applications
  • Medicine and prescription dosing
  • Cooking ingredient measurement
  • Laboratory liquid handling
  • Cosmetics and perfume bottling
Real-World Examples
  • A standard teaspoon holds about 5 mL
  • A standard coffee cup holds about 250 mL
  • A can of soda contains 355 mL

About Converting US Teaspoon to Milliliter

Our US Teaspoon to Milliliter converter provides instant, accurate conversion between these two essential volume units. Whether you are working in engineering, construction, education, or everyday volume measurement, this tool delivers precise results with zero friction.

The US Teaspoon (tsp) is a us unit of volume. A US customary unit of volume equal to 1/3 of a tablespoon or about 4.93 mL. A teaspoon is about the volume of a standard medicine cup or the tip of a thumb.

The Milliliter (mL) is a metric unit of volume. One-thousandth of a liter. Commonly used in medicine, cooking, and laboratory measurements. A milliliter is about 20 drops of water or the volume of a small sugar cube.

Conversion Formula & Worked Examples

The conversion between tsp and mL uses the following mathematical relationship:

Milliliter = US Teaspoon × 4.928921

US Teaspoon = Milliliter × 0.202884

Whether you need to convert for medicine and supplement dosing or medicine and prescription dosing, our interactive converter provides instant, accurate results.

Example

1 tsp

=

4.9289 mL

Example

5 tsp

=

24.6446 mL

Example

10 tsp

=

49.2892 mL

Reverse Direction

Need to convert Milliliter back into US Teaspoon?

Switch conversion direction to view Milliliter → US Teaspoon tables, benchmarks, and detailed info.

Open Milliliter → US Teaspoon

Practical Use Cases & Applications

tsp US Teaspoon

  • Medicine and supplement dosing
  • Cooking spice and extract measurement
  • Tea and coffee preparation
  • Small recipe ingredient scaling

mL Milliliter

  • Medicine and prescription dosing
  • Cooking ingredient measurement
  • Laboratory liquid handling
  • Cosmetics and perfume bottling

Frequently Asked Questions

Common questions about this conversion and related measurement topics.

How do I convert US Teaspoon to Milliliter?
To convert US Teaspoon (tsp) to Milliliter (mL), multiply the us teaspoon value by the conversion factor. Our converter below handles this instantly — just enter the value in tsp and the mL result appears in real time.
How many Milliliters are in one us teaspoon?
One us teaspoon (tsp) equals approximately 4.928921 milliliter (mL). This conversion factor is constant and can be used for any us teaspoon value.
What is the formula to convert tsp to mL?
The conversion formula is: <strong>Milliliter = US Teaspoon × 4.928921</strong>. For example, 5 tsp × 4.9289 = 24.6446 mL, and 10 tsp × 4.9289 = 49.2892 mL.
Can I convert Milliliter back to US Teaspoon?
Yes! Use the reverse direction on our converter, or visit our dedicated <a href="/volume/milliliters-to-teaspoons/" class="text-accent-teal underline">Milliliter to US Teaspoon converter</a>. The reverse conversion factor is approximately 1 mL = 0.202884 tsp.
Where is US Teaspoon commonly used?
Medicine and supplement dosing, Cooking spice and extract measurement, Tea and coffee preparation. A US customary unit of volume equal to 1/3 of a tablespoon or about 4.93 mL.
What is the difference between US Teaspoon and Milliliter?
US Teaspoon (tsp) and Milliliter (mL) are both units of volume. US Teaspoon belongs to the us system, while Milliliter belongs to the metric system. Understanding the conversion between them is essential for international work in volume measurement.
What are some real-world examples of teaspoons and milliliters?
US Teaspoon: A standard dose of liquid medicine is 1 teaspoon (5 mL); A cup of coffee typically uses 2 teaspoons of grounds Milliliter: A standard teaspoon holds about 5 mL; A standard coffee cup holds about 250 mL

Related Volume Conversions & Resources

Explore other popular conversion pairs and educational guides.

About This Conversion

This US Teaspoon to Milliliter converter provides accurate, real-time conversions between these two volume units.

Both units are among the most commonly used volume measurements — rated 7/10 and 9/10 in popularity.

Bookmark this page for quick access to the US Teaspoon → Milliliter converter whenever you need precise unit conversion.

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