Free peptide calculators
Every PepGuru calculator is free, needs no signup, and returns clean U-100 syringe units. Pick the general reconstitution tool, or a per-compound calculator with reference math built in.
Reconstitution Calculator
Any single lyophilized peptide — vial mg, water, dose → concentration and U-100 units.
Open calculator →Stack & Blend Calculator
Per-component math for multi-peptide vials (GLOW, KLOW, custom blends).
Open calculator →GLP-1 Titration Calculator
Published Sema/Tirz/Reta escalation steps converted to exact syringe units for your vial.
Open calculator →Retatrutide Calculator
Retatrutide vial math with GLP-1 titration-style reference tables.
Open calculator →Tirzepatide Calculator
Common 10 and 20 mg/mL setups converted to exact syringe units.
Open calculator →Semaglutide Calculator
Small milligram amounts with readable-draw reference math for 5 and 10 mg vials.
Open calculator →GHK-Cu Calculator
Small mg/mcg copper-peptide doses with readable-draw reference math.
Open calculator →BPC-157 Calculator
Microgram dosing and small-draw readability for 5 and 10 mg vials.
Open calculator →TB-500 Calculator
Milligram dosing with loading/maintenance reference math.
Open calculator →MOTS-c Calculator
mg or mcg entries for small daily or larger weekly draws.
Open calculator →NAD+ Calculator
Milligram NAD+ doses with large-draw and buffered-vial context.
Open calculator →Beyond the calculators
Peptide Finder Quiz
Answer two questions and get matched to the compounds most studied for your research goal.
Take the quiz →COA Checklist
Grade a Certificate of Analysis against 7 quality criteria and get an instant verdict.
Grade a COA →Peptide Library
Browse research compounds by goal, each linked to its calculator and a verified source.
Browse library →