Calculators / Reconstitution

Reconstitution calculator

Enter what's in the vial and how much diluent you add. We'll work out the concentration and the syringe mark. Always double-check units.

Concentration
1
mg/ml
Volume per dose
0.25
ml
Syringe mark
25
units (U-100)
U-100 insulin syringe, 1 ml = 100 units. Draw to the red line.
250 mcg from a 2 mg vial with 2 ml diluent = 0.25 ml, or 25 units on a U-100 syringe. About 8 doses per vial.

Dose / unit converter

IU conversions are compound-specific and appear on profiles where a standard exists (e.g. HCG). Educational tool — not medical advice.