Peptide Calculators — Free Tools for Reconstitution & Dosing
PepComputer provides nine free, browser-based calculators covering every step of peptide research — from reconstituting a lyophilized vial to reading the correct units on an insulin syringe. Select a calculator below or scroll down for recommended starting points.
Most used by researchers
Peptide Reconstitution
PopularCompute concentration (mcg/mL), insulin-syringe units to draw, and doses per vial from vial size and BAC water volume.
Open calculator →BAC Water Calculator
PopularDetermine how much bacteriostatic water to add for any vial size and target concentration. Includes a full reference table.
Open calculator →Peptide Dosage Calculator
Scale a protocol dose to body weight, calculate total daily mcg, and estimate vials needed per cycle length.
Open calculator →Peptide Injection Calculator
Select subcutaneous or IM route, match syringe type, and get the exact draw volume for your dose.
Open calculator →Unit Conversion Calculator
Convert between mg, mcg, mL, U-100 units, and U-40 units with a full reference conversion table.
Open calculator →IU Conversion Calculator
PopularConvert between International Units and micrograms. Covers HGH (1 IU = 333 mcg) and other peptide-adjacent compounds.
Open calculator →mg to mL Calculator
Convert milligrams to milliliters for any reconstitution concentration. Essential for reading dose volumes correctly.
Open calculator →mL to Units Calculator
Convert mL draw volumes into insulin-syringe units for U-100 and U-40 syringes side by side.
Open calculator →Peptide Mixing Calculator
Calculate diluent ratios, final concentrations, and volume per dose when mixing peptides or blending vials.
Open calculator →How these calculators fit together
Peptide research involves several distinct unit-conversion challenges. Researchers typically start with the Peptide Reconstitution Calculator to determine how much bacteriostatic water to add. They then use the Dosage Calculator to scale a protocol dose to body weight, and the mL to Units Calculator to confirm the correct syringe draw. For HGH or other IU-dosed compounds, the IU Conversion Calculator handles the mcg translation.
All nine tools complement the Reconstitution Guide and individual Peptide Profiles. For deeper background on methodology, visit the Guides section.
Frequently asked questions
Are these peptide calculators free to use?+
Yes. All calculators on PepComputer are completely free, require no registration, and work on any device. The math runs entirely in your browser — no data is sent to a server.
Which calculator should I start with?+
If you are reconstituting a lyophilized peptide vial for the first time, start with the Peptide Reconstitution Calculator. It walks you through vial size, BAC water volume, and gives you the exact insulin-syringe units to draw.
What is the difference between the reconstitution calculator and the dosage calculator?+
The reconstitution calculator focuses on mixing — how much BAC water to add and the resulting concentration. The dosage calculator focuses on your protocol — how many mcg per kg of body weight, total daily dose, and how long a vial will last.
Do these calculators provide medical advice?+
No. PepComputer calculators are educational tools for research purposes only. All information is provided to support understanding of peptide chemistry and pharmacology, not to guide any human therapeutic use. Always consult a licensed healthcare professional.
How accurate are the calculations?+
The math is standard pharmaceutical calculation — concentration = mass / volume, units = (dose / concentration) × syringe factor. Accuracy depends on the precision of your inputs. Use a calibrated scale and quality glassware for best results.
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