Teaspoons to ML Converter

Convert teaspoons to milliliters instantly, with a reference table for recipes and liquid medicine doses.

US teaspoons

Milliliters

1 tsp = 4.929 mL

Multiply US teaspoons by 4.92892159 to get milliliters.

The link carries the values you entered, so whoever opens it sees the same result. Nothing is stored on our side — the numbers travel in the link itself.

US teaspoons to milliliters reference table

The conversions people look up most often, rounded to 3 decimal places.

Common US teaspoons to milliliters conversions
US teaspoon (tsp)	Milliliter (mL)
0.25 tsp	1.232 mL
0.5 tsp	2.464 mL
0.75 tsp	3.697 mL
1 tsp	4.929 mL
1.5 tsp	7.393 mL
2 tsp	9.858 mL
3 tsp	14.787 mL
4 tsp	19.716 mL
6 tsp	29.574 mL
8 tsp	39.431 mL
12 tsp	59.147 mL
24 tsp	118.294 mL
48 tsp	236.588 mL

The US teaspoons people look up most

0.5 tsp = 2.464 mL: Below this, volume measures stop being reliable and a recipe should be giving weight instead.
1 tsp = 4.929 mL: Medicine is dosed in standardised spoons of exactly five millilitres - close to a kitchen teaspoon, but deliberately not equal to it.
2 tsp = 9.858 mL: The most common baking-powder quantity in American recipes, and the one worth measuring rather than guessing.
3 tsp = 14.787 mL: Exactly one tablespoon, 14.79 ml. Useful when the recipe gives one and you only own the other.
6 tsp = 29.574 mL: Two tablespoons, 29.6 ml, which is also one US fluid ounce.

How the teaspoons to ml calculation works

A US teaspoon is 4.92892 milliliters — one third of a tablespoon:

milliliters = US teaspoons × 4.92892

In practice a teaspoon is treated as 5 ml everywhere, including in US nutrition labelling and in medicine. The 0.07 ml difference is 1.4%, below the accuracy of any measuring spoon, so the rounding is universal and safe.

Unlike the tablespoon, the teaspoon is consistent internationally: the US, UK, metric and Australian teaspoons are all 5 ml or within a fraction of it. Australia's outsized 20 ml tablespoon is not matched by an outsized teaspoon.

Common amounts:

¼ tsp → 1.23 ml
½ tsp → 2.46 ml
1 tsp → 4.93 ml
3 tsp → 14.79 ml (1 tablespoon)
6 tsp → 29.57 ml (1 fl oz)

Liquid medicine is the case where this stops being a kitchen question. Dosing instructions say "5 ml", and an actual teaspoon from a cutlery drawer holds anywhere from 2.5 to 7 ml — a study in JAMA Pediatrics found parents using kitchen spoons made dosing errors in a large majority of attempts. Use the oral syringe or the marked cup that came with the medicine; a "teaspoon" of cutlery is not a unit of measurement.

For cooking, the useful anchors are 3 teaspoons to a tablespoon and 48 teaspoons to a cup. And for salt or leavening, a level spoon and a heaped one differ by roughly half again — level them unless the recipe says otherwise.

Frequently asked questions

How many teaspoons of sugar is 36 g?

Nine, by the convention health campaigns use, which counts a teaspoon of sugar as 4 g - the weight of a level 5 ml spoon of granulated sugar. That figure is specific to sugar. A teaspoon of fine salt weighs about 6 g and one of ground cinnamon about 2.6 g, because a volume measure weighs whatever the ingredient’s density makes it weigh.

Can I swap fresh, dried and instant yeast teaspoon for teaspoon?

No. As a working rule, one part instant yeast equals about 1.25 parts active dried and 3 parts fresh. A teaspoon of instant yeast is roughly 3 g, so the fresh equivalent is nearer 9 g - which will not fit in a teaspoon at all. Convert the quantity of yeast before you worry about converting the spoon it goes in.

What is a dash, a pinch or a smidgen?

Measuring spoon sets that include them use a dash of 1/8 teaspoon, which is 0.62 ml, a pinch of 1/16 at 0.31 ml, and a smidgen of 1/32 at 0.15 ml. Written recipes almost never mean anything that precise - a pinch is what you lift between finger and thumb. These are seasonings, so adjust to taste rather than converting the fraction.

Teaspoons to ML Converter