Tablespoons to Milligrams Conversion Calculator

Enter the volume in tablespoons below to calculate the weight in milligrams.

Results in Milligrams:
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1 tbsp = 14,786.764782056 mg
14.786765 g

How to Convert Tablespoons to Milligrams

To convert a tablespoon measurement to a milligram measurement, multiply the volume by 14,786.76478 times the density of the ingredient or material.

You can use this simple formula to convert:

milligrams = tablespoons × 14,786.76478 × ingredient density

Thus, the volume in milligrams is equal to the tablespoons multiplied by 14,786.76478 times the density of the ingredient or material.

For example, here's how to convert 5 tablespoons to milligrams for an ingredient with a density of 0.7 g/mL.
5 tbsp = 5 × 14,786.76478 × 0.7 = 51,753.67674 mg

Tablespoons and milligrams are both commonly used to measure cooking ingredients.

For cooking applications, most chefs suggest measuring dry ingredients by weight rather than volume to improve accuracy in the measurements.[1] The density of dry ingredients can vary for a variety of reasons, such as compaction.

The best way to ensure an accurate conversion is to use a scale. When a scale is not available, a calculator like the one above is a good way to estimate the volume to weight conversion.

Keep reading to learn more about each unit of measure.

How Many Milligrams are in a Tablespoon?

The actual weight of a tablespoon will vary depending on the density of the material. The table below shows how many milligrams of various wet and dry ingredients are in a tablespoon.

Tablespoon measurements converted to milligrams for commonly used ingredients.
Volume in Tablespoons: Weight in Milligrams of:
Water Milk Cooking Oil All Purpose Flour Granulated Sugar
1/8 tbsp 1,848 mg 1,904 mg 1,627 mg 977.77 mg 1,563 mg
1/4 tbsp 3,697 mg 3,808 mg 3,253 mg 1,956 mg 3,125 mg
1/3 tbsp 4,929 mg 5,077 mg 4,337 mg 2,607 mg 4,167 mg
1/2 tbsp 7,393 mg 7,615 mg 6,506 mg 3,911 mg 6,250 mg
2/3 tbsp 9,858 mg 10,154 mg 8,675 mg 5,215 mg 8,333 mg
3/4 tbsp 11,090 mg 11,423 mg 9,759 mg 5,867 mg 9,375 mg
1 tbsp 14,787 mg 15,230 mg 13,012 mg 7,822 mg 12,500 mg


The tablespoon is a unit of volume equal to three teaspoons or ½ fluid ounce.[2] One tablespoon is equal to just under 14.8 milliliters, but in nutrition labeling, one tablespoon is equal to 15 milliliters.[3]

The tablespoon is a US customary unit of volume. Tablespoons can be abbreviated as tbsp, and are also sometimes abbreviated as T, Tbls, or Tb. For example, 1 tablespoon can be written as 1 tbsp, 1 T, 1 Tbls, or 1 Tb.


The milligram is the mass equal to 1/1,000 of a gram, or 0.0154 grains.

The milligram, or milligramme, is an SI unit of weight in the metric system. In the metric system, "milli" is the prefix for 10-3. Milligrams can be abbreviated as mg; for example, 1 milligram can be written as 1 mg.


  1. National Institute of Standards & Technology, Metric Cooking Resources,
  2. Merriam-Webster, tablespoon,
  3. U.S. Food & Drug Administration, Guidance for Industry: Guidelines for Determining Metric Equivalents of Household Measures,

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