mg to mL Converter
Convert a mass in milligrams to a volume in millilitres using the liquid's concentration.
About the mg to mL Converter
Milligrams measure mass and millilitres measure volume, so converting needs the concentration printed on the bottle, such as 125 mg per 5 mL. Divide the amount by the mg per mL. This is a unit conversion only; it does not tell you what dose is right. For water-like liquids with no concentration, 1 mL weighs about 1,000 mg.
The formula
mL = mg ÷ (mg per mL)
Worked example
Example: Volume = 12 mL
- Inputs: Amount: 280 mg; Concentration: mg: 140 mg; per: 6 mL.
- Formula: mL = mg ÷ (mg per mL)
- Result: Volume = 12 mL
Things to keep in mind
- Not medical advice: never change a medicine dose without professional guidance.
Questions people ask
How many mg in 1 mL?
It depends on the concentration; for water, about 1,000 mg.
Is a kitchen teaspoon accurate?
No, use a proper oral syringe.