Reconstitution, solved

The reconstitution calculator with a visual syringe.

Enter your vial amount, the water you're adding, and your own target amount. Peptific computes the concentration and fills a syringe to the exact line from those inputs. Your numbers — we do the arithmetic.

1Type your vial and BAC water — the concentration appears instantly.
2Enter your target amount in mcg or mg. The syringe fills to your draw line.
3Read the exact unit line, then save it as a vial in the app.
Pure arithmetic Nothing leaves your browser Free, no sign-up
The math

No mystery. Just the formula, made visible.

Every result comes from the same arithmetic a careful operator does by hand — only faster, and impossible to fat-finger.

vial ÷ water
Concentration in mg/mL
target ÷ conc
Volume to draw in mL
vol × u/mL
Your exact syringe line
Quick start

Open the calculator, pre-filled.

Jump in with a worked example for a common compound, then change every number to your own.

Save this calc to your stack.

The app keeps your vials, decrements them as you log, and rebuilds this calculation in two taps. No account — it all stays on your iPhone.

Download on theApp Store