Enter your vial, your diluent, and your target dose — PeptideCalc turns three inputs into the exact syringe units to draw. Fast, accurate math for researchers, biohackers, and clinicians.
Enter your vial size, the amount of bacteriostatic or sterile water you'll add, and your target dose to instantly get the exact syringe units to draw.
Based on a standard U-100 insulin syringe where 100 units = 1 ml
Reconstituting a peptide means doing two conversions back to back: turning a vial's milligram content into a concentration, then turning your target dose into a volume you can actually draw. Do that math by hand — late at night, mid-experiment, on the back of a lab sheet — and small errors slip in. A misplaced decimal can quietly double or halve your intended dose.
A peptide calculator exists to make that impossible. Enter what's in the vial, what you diluted it with, and what you want to dose, and a peptide dosage calculator returns the exact syringe reading. No formulas to remember, no notepad arithmetic, no second-guessing your own long division.
PeptideCalc works as both a peptide reconstitution calculator and a dosing tool in one, built for researchers and clinicians who need numbers they can trust in seconds — not minutes spent redoing the same calculation three times to be sure.
Three core calculations, one tool — every number a reconstitution requires.
Enter the peptide's milligram content and your bacteriostatic water volume, and the tool computes the exact concentration of your reconstituted vial. This is the core of any peptide mixing calculator: one dilution in, one clear concentration out, ready to dose from.
Type a target dose in micrograms and get the matching volume instantly. This peptide dosage calculator handles the mcg-to-units conversion that trips up manual math, so a micro-dose protocol and a full-milligram protocol are equally effortless.
Results come back in syringe units, not abstract milliliters. Because this peptide syringe calculator is calibrated for standard U-100 insulin syringes, the number on the screen is the line you draw to — no extra conversion step where mistakes hide.
Scroll up, enter your vial details, and read your draw volume — no signup, no spreadsheet. Want the theory behind the numbers? Our peptide dosing guide and reconstitution guide break down every step in depth.
Peptide reconstitution is the process of adding a sterile diluent — typically bacteriostatic water — to a lyophilized (freeze-dried) peptide so it dissolves into a usable solution. The ratio of peptide mass to diluent volume sets your concentration, which is exactly what our peptide reconstitution calculator computes for you.
A U-100 syringe is graduated so that 100 units equals 1 mL — one unit is one-hundredth of a milliliter. Barrels commonly come in 0.3 mL, 0.5 mL, and 1 mL sizes, but the unit scale works identically on all of them, which is why PeptideCalc reports every dose in units rather than milliliters.
Yes. The math depends on only three variables — peptide mass, diluent volume, and target dose — not the specific compound. Whatever research peptide you're working with, and whatever vial size, the same peptide calculator handles the reconstitution and dosing math the same way.
Diluent volume determines concentration. The same vial reconstituted with twice the water yields half the concentration, which means double the units drawn for the same dose. Always enter your true water volume rather than an estimate — guessing here is the most common source of dosing errors. Our peptide dosing guide walks through choosing a concentration in more detail.