VialMath — Support

VialMath is a reconstitution and concentration calculator.

Important. VialMath performs arithmetic on the numbers you enter and nothing more. It does not recommend, prescribe, or verify any amount. It is for informational and educational purposes only, is not medical advice, and is not a substitute for a licensed healthcare professional. Always independently verify every calculation.

Contact

Questions, bugs, or feedback? Email tprippy@gmail.com.

Frequently asked questions

How does the math work?
Concentration = vial strength (mg) ÷ solvent (mL). Draw volume = amount ÷ concentration. Syringe units = draw volume × units-per-mL (U-100 = ×100). Example: a 10 mg vial in 2 mL is 5 mg/mL; a 250 mcg amount is 0.05 mL, which is 5 units on a U-100 syringe.

Is my data private?
Yes. Everything you enter stays on your device. No account, no analytics, no internet connection.