Convert one teaspoon (US) to milliliters

Explanation

To convert one teaspoon (US) to milliliters all we need is to know the conversion factor and we are done. Luckily, we can compute that factor using the units' definitions below.

The result is that there are approximately 4.9289 milliliters in 1 teaspoon (US).

Formula

1 tsp ≈ 4.9289 ml

teaspoons (US)tsp

dimension	volume
system	U.S. customary units (USCS)
symbol	tsp

The teaspoon (tsp) is a unit of volume in the U.S. customary units.

Definition of the teaspoon

There are 3 teaspoons in a tablespoon.

NIST Handbook 44 Specifications: Appendix C

Value in terms of the SI

One teaspoon is equivalent to 4.92892159375 cubic centimeters.

Equivalences

One teaspoon is also equivalent to:

Some Facts

While named after an utensile, the teaspoon is an official unit of measure in the US. It has to be noted that the capacity of actual teaspoons (the object) can vary and probably won't be equal to a teaspoon (the unit).

Other culinary units

teaspoon	tsp
tablespoon	Tbsp	3 teaspoons
fluid ounce	fl oz	2 tablespoons
shot	jig	3 tablespoons
cup	cup	16 tablespoons

US Culinary Units

The US culinary units are mainly used in recipes but also can be found on nutrition labels and even in pharmaceutic medical prescriptions (especially the teaspoon).

When on nutrition labels, the units have their value in milliliters rounded. In that case a teaspoon means 5 milliliters (mL), a tablespoon means 15 mL, a cup means 240 mL.^[source]

millilitersml

dimension	volume
symbol	ml

The milliliter (ml) is a unit of volume.

Definition of the milliliter

One milliliter is 0.001 liters.

Value in terms of the SI

One milliliter is equivalent to 1 cubic centimeter.

Equivalences

One milliliter is also equivalent to:

Metric volume units

microliter	µl	0.000 001
milliliter	ml	0.001
centiliter	cl	0.01
deciliter	dl	0.1
liter	l	1
dekaliter	dal	10
hectoliter	hl	100
kiloliter	kl	1 000
megaliter	Ml	1 000 000
gigaliter	Gl	1 000 000 000
teraliter	Tl	1 000 000 000 000