mg to mL Conversion (Milligrams to Milliliters)

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

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1 mg = 0.001 mL

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How to Convert Milligrams to Milliliters

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Since milligrams are a unit of mass and milliliters are a unit of volume, 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 milligrams and milliliters of an ingredient or substance, we must either multiply or divide by its density, depending on which direction we are performing the conversion.

Milligrams to Milliliters Formula

To convert a measurement in milligrams to milliliters, divide the weight 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:

milliliters = milligrams1,000 × density

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

For example, here's how to convert 500 milligrams to milliliters for an ingredient with a density of 0.7 g/mL.
milliliters = 500 mg1,000 × 0.7 g/mL = 0.7143 mL

When to Convert Milligrams to Milliliters

Milligrams and milliliters 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 weight to volume 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.

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 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.

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.

Milligram to Milliliter Conversion Table

Milligram measurements converted to milliliters for commonly used cooking and baking ingredients.
Weight in Milligrams: Volume in Milliliters of:
Water Milk Cooking Oil All Purpose Flour Granulated Sugar
10 mg 0.01 mL 0.009709 mL 0.011364 mL 0.018904 mL 0.011829 mL
20 mg 0.02 mL 0.019417 mL 0.022727 mL 0.037807 mL 0.023659 mL
30 mg 0.03 mL 0.029126 mL 0.034091 mL 0.056711 mL 0.035488 mL
40 mg 0.04 mL 0.038835 mL 0.045455 mL 0.075614 mL 0.047318 mL
50 mg 0.05 mL 0.048544 mL 0.056818 mL 0.094518 mL 0.059147 mL
60 mg 0.06 mL 0.058252 mL 0.068182 mL 0.113422 mL 0.070976 mL
70 mg 0.07 mL 0.067961 mL 0.079545 mL 0.132325 mL 0.082806 mL
80 mg 0.08 mL 0.07767 mL 0.090909 mL 0.151229 mL 0.094635 mL
90 mg 0.09 mL 0.087379 mL 0.102273 mL 0.170132 mL 0.106465 mL
100 mg 0.1 mL 0.097087 mL 0.113636 mL 0.189036 mL 0.118294 mL
110 mg 0.11 mL 0.106796 mL 0.125 mL 0.20794 mL 0.130124 mL
120 mg 0.12 mL 0.116505 mL 0.136364 mL 0.226843 mL 0.141953 mL
130 mg 0.13 mL 0.126214 mL 0.147727 mL 0.245747 mL 0.153782 mL
140 mg 0.14 mL 0.135922 mL 0.159091 mL 0.26465 mL 0.165612 mL
150 mg 0.15 mL 0.145631 mL 0.170455 mL 0.283554 mL 0.177441 mL
160 mg 0.16 mL 0.15534 mL 0.181818 mL 0.302457 mL 0.189271 mL
170 mg 0.17 mL 0.165049 mL 0.193182 mL 0.321361 mL 0.2011 mL
180 mg 0.18 mL 0.174757 mL 0.204545 mL 0.340265 mL 0.212929 mL
190 mg 0.19 mL 0.184466 mL 0.215909 mL 0.359168 mL 0.224759 mL
200 mg 0.2 mL 0.194175 mL 0.227273 mL 0.378072 mL 0.236588 mL
210 mg 0.21 mL 0.203883 mL 0.238636 mL 0.396975 mL 0.248418 mL
220 mg 0.22 mL 0.213592 mL 0.25 mL 0.415879 mL 0.260247 mL
230 mg 0.23 mL 0.223301 mL 0.261364 mL 0.434783 mL 0.272076 mL
240 mg 0.24 mL 0.23301 mL 0.272727 mL 0.453686 mL 0.283906 mL
250 mg 0.25 mL 0.242718 mL 0.284091 mL 0.47259 mL 0.295735 mL
260 mg 0.26 mL 0.252427 mL 0.295455 mL 0.491493 mL 0.307565 mL
270 mg 0.27 mL 0.262136 mL 0.306818 mL 0.510397 mL 0.319394 mL
280 mg 0.28 mL 0.271845 mL 0.318182 mL 0.529301 mL 0.331224 mL
290 mg 0.29 mL 0.281553 mL 0.329545 mL 0.548204 mL 0.343053 mL
300 mg 0.3 mL 0.291262 mL 0.340909 mL 0.567108 mL 0.354882 mL
310 mg 0.31 mL 0.300971 mL 0.352273 mL 0.586011 mL 0.366712 mL
320 mg 0.32 mL 0.31068 mL 0.363636 mL 0.604915 mL 0.378541 mL
330 mg 0.33 mL 0.320388 mL 0.375 mL 0.623819 mL 0.390371 mL
340 mg 0.34 mL 0.330097 mL 0.386364 mL 0.642722 mL 0.4022 mL
350 mg 0.35 mL 0.339806 mL 0.397727 mL 0.661626 mL 0.414029 mL
360 mg 0.36 mL 0.349515 mL 0.409091 mL 0.680529 mL 0.425859 mL
370 mg 0.37 mL 0.359223 mL 0.420455 mL 0.699433 mL 0.437688 mL
380 mg 0.38 mL 0.368932 mL 0.431818 mL 0.718336 mL 0.449518 mL
390 mg 0.39 mL 0.378641 mL 0.443182 mL 0.73724 mL 0.461347 mL
400 mg 0.4 mL 0.38835 mL 0.454545 mL 0.756144 mL 0.473176 mL

References

  1. National Institute of Standards & Technology, Metric Cooking Resources, https://www.nist.gov/pml/owm/metric-cooking-resources
  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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