US Teaspoons to Milliliters Converter

Multiply US teaspoons by about 4.929 to get milliliters.

1 tsp = 4.9289215938 mL

Formula

1 tsp = 4.9289215938 mL

milliliters = US teaspoons × 4.9289215938

Worked example

Convert 2 US teaspoons to milliliters

  1. Multiply by 4.9289215938
  2. 2 × 4.9289215938 = 9.85784

2 tsp = 9.85784 mL

Good to know

A US teaspoon is one third of a tablespoon, about 4.93 mL; nutrition labels round it to 5 mL, which is also the size of a metric teaspoon. Recipes that say “a pinch” or “a dash” mean roughly ⅛ to ⅙ of a teaspoon — too small to convert meaningfully.

Conversion table

US teaspoons to milliliters conversion table
US teaspoons (tsp)Milliliters (mL)
0.1250.616115
0.251.23223
0.52.46446
0.753.69669
14.92892
1.57.39338
29.85784
314.7868
419.7157
629.5735

About these units

US teaspoon (tsp)
One third of a US tablespoon, about 4.93 mL. (Nutrition labels round it to 5 mL.)
Milliliter (mL)
One thousandth of a liter — the same as one cubic centimeter (cm³).