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Teaspoons to Milligrams Converter

Convert teaspoons (tsp) to milligrams (mg)

Convert Weight to Volume

tsp

Pure water at about 4 °C. At room temperature it's 0.998 g/mL.

Results update as you type

Result

4,928.921594 mg
Milligrams

1 tsp of water = 4,928.921594 mg

1 tsp in other units

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How to convert teaspoons to milligrams

Weight and volume are linked by density. Water weighs 1 gram per millilitre, so for water mg = tsp × 4,928.922 (water). For other substances, pick one above.

mg = tsp × 4,928.922 (water)

2 tsp of water = 9,857.843 mg

Other substances

1 tsp is milk 5,077 mg, cooking oil 4,535 mg, ghee (melted) 4,485 mg, honey 6,999 mg. Lighter substances such as oil take up more volume for the same weight.

About teaspoons (tsp)

A US teaspoon is about 4.93 mL (often rounded to 5 mL).

About milligrams (mg)

A milligram is one thousandth of a gram. Medicine doses are often given in milligrams.

More conversions

Milligrams to TeaspoonsAll units: Weight to Volume Converter

Teaspoons to other units

Other units to Milligrams

Frequently asked questions

How many milligrams are in one teaspoon?

For water, one teaspoon is 4,928.922 milligrams. For other substances it depends on density: milk 5,077 mg, cooking oil 4,535 mg, ghee (melted) 4,485 mg, honey 6,999 mg.

Is the tsp to mg conversion the same for every liquid?

No. Weight and volume are linked by density, so oil, milk and honey all give different answers. Pick the substance in the converter above.

How do I convert teaspoons to milligrams?

Turn the volume into millilitres, multiply by the density in g/mL to get grams, then convert to milligrams. For water: 2 tsp = 9,857.843 mg.