Get the draw right.
PepExact turns vial, water, and dose into an exact syringe measurement — with the math shown, every time.
Open the peptide calculatorFree · no login · nothing to sell you
Calculators
Peptide calculator
Vial, water, dose → exact units on your syringe, with every step of the math shown.
Reconstitution calculator
Work backwards: pick the draw you want, get the exact water to add.
mg ⇄ mcg converter
The conversion behind most dosing mistakes, done instantly and correctly.
Syringe units ⇄ mL
Translate U-100 insulin syringe units to millilitres and back.
Why trust the number
The math is shown
Every result expands into its working steps, so you can check it yourself.
One engine everywhere
The website and the app share the same calculation engine — identical inputs, identical results.
Independent
PepExact sells no peptides and gives no dosing advice. It exists to make the measurement trustworthy.