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Milliliters to Milligrams Converter

Convert milliliters (mL) to milligrams (mg), with the formula, a conversion table and exact factors.

Change the values and press Calculate to work out your own figures.

Convert cups and spoons to grams or ounces (or back) for a chosen ingredient, using USDA weights, or enter your own density.

The quantity to convert. Fractions such as 3/4 or 1 1/2 are accepted.
Unit you want. Swap exchanges the two units.
Weight per cup differs by ingredient and by how it is measured (sifted, packed, chopped). Each option names the assumption used; choose Other to enter your own density.
Only used when the ingredient is Other: the weight per volume of your ingredient.
Result
Converted amount
1,000 mg
Density used
1 g/mL (USDA FDC 174158, 1 ml = 1 g)

1 milliliters of water = 1,000 milligrams. Weights for cups and spoons vary with how the ingredient is measured, so treat this as a close estimate.

The same amount in other weight units
UnitAmount
grams1
kilograms0.001
ounces (avoirdupois)0.035274
pounds0.00220462
Show the working
  1. 1 mL = 1 mL
  2. × 1 g/mL (USDA FDC 174158, 1 ml = 1 g) = 1 g
  3. = 1000 mg

How to convert milliliters to milligrams

1 mL = 1,000 mg, so multiply by 1,000 to go from milliliters to milligrams. Going the other way, 1 mg = 0.001 mL.

mg = mL × 1,000
mL = mg × 0.001

Worked example:

5 mL = 5 mL
× 1 g/mL (USDA FDC 174158, 1 ml = 1 g) = 5 g
= 5000 mg

Milliliters to milligrams table

MillilitersMilligrams
1 mL1,000 mg
2 mL2,000 mg
3 mL3,000 mg
4 mL4,000 mg
5 mL5,000 mg
6 mL6,000 mg
7 mL7,000 mg
8 mL8,000 mg
9 mL9,000 mg
10 mL10,000 mg
15 mL15,000 mg
20 mL20,000 mg
25 mL25,000 mg
30 mL30,000 mg
40 mL40,000 mg
50 mL50,000 mg
75 mL75,000 mg
100 mL100,000 mg
250 mL250,000 mg
500 mL500,000 mg
1000 mL1,000,000 mg

About the units

Milliliters (mL)
Milliliters, a metric unit. Definition: BIPM SI Brochure.
Milligrams (mg)
Milligrams, a metric unit. Definition: BIPM SI Brochure.

Formula version 0.1.0Reviewed