mg to mL Calculator

Your details

Use "Liquid density" for water, milk, oils, and similar liquids. Use "Medication concentration" when you have a drug label showing mg/mL or mg per 5 mL.
Select the liquid whose density you want to use, or pick "Other" to enter a custom density.
Enter the concentration from the medication label in mg/mL. If the label says "250 mg per 5 mL", divide: 250 / 5 = 50 mg/mL.
mg/mL
Enter the mass in milligrams (mg) you want to convert to milliliters.
mg
Volume
0.5mL

Volume corresponding to the mass you entered

Mass500mg
Density / concentration used1,000mg/mL
Mass (mg)500
Density / conc. (mg/mL)1,000
Volume (mL)0.5

500.00 mg = 0.5000 mL

  • 500.00 mg divided by a density of 1000.000 mg/mL gives 0.5000 mL.

Next stepDraw 0.50 mL into a syringe to measure this volume accurately.

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