mL to mg Conversion (Milliliters to Milligrams)

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

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1 mL = 1,000 mg

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How to Convert Milliliters to Milligrams

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Since milliliters are a unit of volume and milligrams are a unit of mass, which are different physical quantities, we need to know one more physical quantity of the ingredient or substance to convert between them. In this case, we need to account for the density of the substance whenever we do a conversion.

Therefore, to convert between milliliters and milligrams of an ingredient or substance, we must either multiply or divide by its density, depending on which direction we are performing the conversion.

Milliliters to Milligrams Formula

To convert a measurement in milliliters to milligrams, multiply the volume by the density of the ingredient or material. Note that in order for this to work, the density must be in milligrams per milliliter (mg/mL).

If the density is given in grams per milliliter (g/mL), then first multiply the density by 1,000 to convert to mg/mL.

For a density given in g/mL, you can use this simple formula to convert:

milligrams = milliliters × 1,000 × density

Thus, the weight in milligrams is equal to the volume in milliliters multiplied by 1,000 times the density (in g/mL) of the ingredient, substance, or material.

For example, here's how to convert 5 milliliters to milligrams for an ingredient with a density of 0.7 g/mL.
milligrams = 5 mL × 1,000 × 0.7 g/mL = 3,500 mg

When to Convert Milliliters to Milligrams

Milliliters 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 and clumping.

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.

Another useful application of weight and volume conversions is chemistry. When performing chemical reactions by combining separate chemicals to produce a new chemical, one must know the exact amount of each chemical to add in order to maximize the yield of the reaction.

It is common to mix powdered chemicals with liquid, or aqueous, chemicals, and this is where it becomes very useful to convert between weights and volumes.[2]

Keep reading to learn more about each unit of measure.

How Many Milligrams Are in a Milliliter?

The actual weight of a milliliter 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 milliliter.

Milliliter measurements converted to milligrams for commonly used cooking and baking ingredients.
Volume in Milliliters: Weight in Milligrams of:
Water Milk Cooking Oil All Purpose Flour Granulated Sugar
1 mL 1,000 mg 1,030 mg 880 mg 529 mg 845.35 mg
2 mL 2,000 mg 2,060 mg 1,760 mg 1,058 mg 1,691 mg
3 mL 3,000 mg 3,090 mg 2,640 mg 1,587 mg 2,536 mg
4 mL 4,000 mg 4,120 mg 3,520 mg 2,116 mg 3,381 mg
5 mL 5,000 mg 5,150 mg 4,400 mg 2,645 mg 4,227 mg
6 mL 6,000 mg 6,180 mg 5,280 mg 3,174 mg 5,072 mg
7 mL 7,000 mg 7,210 mg 6,160 mg 3,703 mg 5,917 mg
8 mL 8,000 mg 8,240 mg 7,040 mg 4,232 mg 6,763 mg
9 mL 9,000 mg 9,270 mg 7,920 mg 4,761 mg 7,608 mg
10 mL 10,000 mg 10,300 mg 8,800 mg 5,290 mg 8,454 mg
11 mL 11,000 mg 11,330 mg 9,680 mg 5,819 mg 9,299 mg
12 mL 12,000 mg 12,360 mg 10,560 mg 6,348 mg 10,144 mg
13 mL 13,000 mg 13,390 mg 11,440 mg 6,877 mg 10,990 mg
14 mL 14,000 mg 14,420 mg 12,320 mg 7,406 mg 11,835 mg
15 mL 15,000 mg 15,450 mg 13,200 mg 7,935 mg 12,680 mg
16 mL 16,000 mg 16,480 mg 14,080 mg 8,464 mg 13,526 mg
17 mL 17,000 mg 17,510 mg 14,960 mg 8,993 mg 14,371 mg
18 mL 18,000 mg 18,540 mg 15,840 mg 9,522 mg 15,216 mg
19 mL 19,000 mg 19,570 mg 16,720 mg 10,051 mg 16,062 mg
20 mL 20,000 mg 20,600 mg 17,600 mg 10,580 mg 16,907 mg
21 mL 21,000 mg 21,630 mg 18,480 mg 11,109 mg 17,752 mg
22 mL 22,000 mg 22,660 mg 19,360 mg 11,638 mg 18,598 mg
23 mL 23,000 mg 23,690 mg 20,240 mg 12,167 mg 19,443 mg
24 mL 24,000 mg 24,720 mg 21,120 mg 12,696 mg 20,288 mg
25 mL 25,000 mg 25,750 mg 22,000 mg 13,225 mg 21,134 mg
26 mL 26,000 mg 26,780 mg 22,880 mg 13,754 mg 21,979 mg
27 mL 27,000 mg 27,810 mg 23,760 mg 14,283 mg 22,824 mg
28 mL 28,000 mg 28,840 mg 24,640 mg 14,812 mg 23,670 mg
29 mL 29,000 mg 29,870 mg 25,520 mg 15,341 mg 24,515 mg
30 mL 30,000 mg 30,900 mg 26,400 mg 15,870 mg 25,361 mg
31 mL 31,000 mg 31,930 mg 27,280 mg 16,399 mg 26,206 mg
32 mL 32,000 mg 32,960 mg 28,160 mg 16,928 mg 27,051 mg
33 mL 33,000 mg 33,990 mg 29,040 mg 17,457 mg 27,897 mg
34 mL 34,000 mg 35,020 mg 29,920 mg 17,986 mg 28,742 mg
35 mL 35,000 mg 36,050 mg 30,800 mg 18,515 mg 29,587 mg
36 mL 36,000 mg 37,080 mg 31,680 mg 19,044 mg 30,433 mg
37 mL 37,000 mg 38,110 mg 32,560 mg 19,573 mg 31,278 mg
38 mL 38,000 mg 39,140 mg 33,440 mg 20,102 mg 32,123 mg
39 mL 39,000 mg 40,170 mg 34,320 mg 20,631 mg 32,969 mg
40 mL 40,000 mg 41,200 mg 35,200 mg 21,160 mg 33,814 mg

What Is a Milliliter?

The milliliter is a unit of volume equal to 1 cubic centimeter, 1/1,000 of a liter, or about 0.061 cubic inches.[3]

The milliliter is an SI unit of volume in the metric system. In the metric system, "milli" is the prefix for thousandths, or 10-3. A milliliter is sometimes also referred to as a millilitre. Milliliters can be abbreviated as mL, and are also sometimes abbreviated as ml or mℓ. For example, 1 milliliter can be written as 1 mL, 1 ml, or 1 mℓ.

Since one milliliter is equivalent to one cubic centimeter, milliliters are sometimes expressed using the abbreviation for a cubic centimeter (cc) for things such as medical dosages or engine displacements.

Learn more about milliliters.

What Is a Milligram?

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

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

A milligram is also frequently referred to as a unit of weight. While technically, a milligram is a measure of mass, and weight is actually a measure of force, the two are equivalent as long as we are performing our calculations on Earth.

For example, an object with a mass of 1 milligram weighs 1 milligram on Earth, but only weighs one-sixth of that on the moon, yet still has the same mass.

Learn more about milligrams.

References

  1. National Institute of Standards & Technology, Culinary Measurement Tips, https://www.nist.gov/pml/owm/culinary-measurement-tips
  2. CK-12 Foundation, Introductory Chemistry (CK-12) - 12.6: Mass-Volume Stoichiometry, https://chem.libretexts.org/Bookshelves/Introductory_Chemistry/Introductory_Chemistry_(CK-12)/12%3A_Stoichiometry/12.06%3A_Mass-Volume_Stoichiometry
  3. National Institute of Standards and Technology, Specifications, Tolerances, and Other Technical Requirements for Weighing and Measuring Devices, Handbook 44 - 2019 Edition, https://nvlpubs.nist.gov/nistpubs/hb/2019/NIST.HB.44-2019.pdf

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