Reconstitution calculator

Enter how much compound is in the vial and how much diluent you add, and see the concentration of the solution. Add a target amount to see the volume that contains it and how many portions of that size the vial makes. For laboratory research use.

mg

Printed on the vial label, for example “10 mg”.

mL

For example, bacteriostatic water.

Switch between mg and mcg. 1 mg = 1,000 mcg.

Volume per portion

50 µL

0.05 mL

Concentration
5 mg/mL
Per 100 µL
500 mcg
Portions per vial
40

How it works

  1. Concentration = amount in the vial ÷ diluent added. For example, 10 mg ÷ 2 mL = 5 mg/mL (5,000 mcg/mL).
  2. Volume per portion = target amount ÷ concentration. For example, 250 mcg ÷ 5,000 mcg/mL = 0.05 mL, which is 50 µL.
  3. Portions per vial = amount in the vial ÷ target amount. For example, 10 mg ÷ 0.25 mg = 40.

This calculator only does the math and is provided for reference. Always double-check your numbers. Products on this site are sold for laboratory research use only and are not for human or veterinary use.