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Calculator

Reconstitution calculator

Work out concentration and volume from the amount in the vial and the water you add. Results are shown in mL and in U-100 syringe units.

A calculation tool only. It does not recommend any amount or dose and is not medical advice. Products on this site are for research use only.

mg
mL
More water means a lower concentration, so the same amount takes up more units on the syringe.
mcg
The calculator does not suggest an amount. Enter an amount in mcg or mg, or pick "units" to see how much a number of syringe units holds.
Syringe

Enter a desired amount to see how much to draw.

Volume to draw—
Concentration5 mg/mL
Amount per unit50 mcg
Draws per vial—

On a U-100 syringe: 1 mL = 100 units. · 1 mg = 1000 mcg

How it is calculated

Concentration (mg/mL)
Amount in vial ÷ Water added
Volume to draw (mL)
Desired amount per draw ÷ Concentration
units (U-100)
Volume to draw × 100
Amount in the draw
units ÷ 100 × Concentration
Draws per vial
Amount in vial ÷ Desired amount per draw