Free Tools
Accurate dosing tools for peptides and GLP-1s. Calculate reconstitution concentrations, injection volumes, and syringe measurements in seconds.
Calculate the exact concentration of your peptide after adding bacteriostatic water. Enter your vial size and BAC water volume to get mcg/ml instantly.
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💉Convert your target dose into the exact volume to draw on your insulin syringe. Works for mcg and mg doses across all peptides and GLP-1s.
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Pre-configured with the vial sizes, doses and titration schedules for each compound — so you can go straight to the units you need to draw.
Work out semaglutide concentration and injection units instantly. Covers 2mg, 5mg and 10mg vials and every titration dose from 0.25mg to 2.4mg.
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Calculate tirzepatide concentration and syringe units for any vial size. Covers the full 2.5mg–15mg titration schedule.
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Calculate retatrutide concentration and syringe units for 10mg and 20mg vials across the full titration.
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Calculate cagrilintide concentration and syringe units for 5mg and 10mg vials across the weekly titration.
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Work out BPC-157 concentration and injection units instantly for 5mg and 10mg vials at any dose.
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Calculate TB-500 concentration and syringe units for 5mg and 10mg vials across loading and maintenance doses.
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Work out GHK-Cu concentration and syringe units instantly for 50mg and 100mg copper-peptide vials.
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Calculate tesamorelin concentration and syringe units for 5mg and 10mg GHRH-analogue vials.
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Work out AOD-9604 concentration and syringe units instantly for 2mg and 5mg vials.
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Work out ipamorelin concentration and syringe units instantly for 5mg and 10mg vials.
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Work out CJC-1295 concentration and syringe units instantly for 2mg and 5mg vials (DAC and no-DAC).
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Work out hexarelin concentration and syringe units instantly for 5mg and 10mg vials.
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Calculate Epitalon concentration and syringe units for 10mg and 50mg vials across a cycle.
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Work out PT-141 concentration and syringe units instantly for a 10mg vial across the 0.5–2mg range.
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Work out Selank concentration and dose volume instantly for 5mg and 10mg vials.
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Work out Semax concentration and dose volume instantly for 5mg, 10mg and 30mg vials.
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Calculate SS-31 concentration and syringe units for 10mg and 50mg mitochondrial-peptide vials.
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An error at the reconstitution stage cascades into every injection that follows. Add 1ml of water instead of 2ml to a 5mg vial, and every dose you draw will be double strength — with no way to know without recalculating from scratch.
These calculators give you a reliable reference point before you reconstitute, and let you verify the numbers any time you switch vial sizes, change your BAC water volume, or adjust your dose.
For a deeper dive into reconstitution technique, mixing ratios, and storage best practices, read our guide: Reconstitution: The Step Most Peptide Protocols Get Wrong. Have a practical question? Our peptide FAQ covers storage, stacking, needle choice, and travel. Choosing an app to log it all? See the best peptide tracker and best GLP-1 tracker comparisons.
The calculators give you the numbers. Peptidy logs them — injection site, dose, time, and compound — so your protocol history is always accurate and accessible.
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