About PeptideWiki
Free calculators for people who work with research peptides. Everything runs in your browser.
Your data stays with you
The calculators run in your browser and send nothing anywhere, and a shared plan travels inside the link itself. What you type into the assistant's chat box is the exception: it goes to our AI provider (OpenAI) so a reply can be written, and each message carries a Cloudflare Turnstile check to keep bots off that endpoint. Saved pages stay in this browser always.
Signing in is optional. It does one thing: copies your saved plans to your account so they follow you between devices. Signed out, saved plans stay in that browser only.
We sell nothing. Some vendor links are referral links, and this site may earn from them.
How the math works
Reconstitution. Concentration is vial content divided by the water you added. A U-100 syringe reads 100 units per millilitre, so 10 units is 0.1 mL.
Half-life. Each dose decays exponentially and overlapping doses stack. Build-up is read off the simulated curve, so uneven schedules like 5-on/2-off stay accurate.
Cost and vials. Only whole draws per vial count, so a leftover part-draw counts as waste. That is why "to buy" and "used" differ.
What it will not do
It will not tell you how much to take, and there is no body-weight field. Every number it shows is a conversion of one you typed in.
For most compounds here there is no human dose-ranging research to scale from. Adding a weight field would invent precision that does not exist.
Limits of the data
Half-life figures for several short peptides are poorly studied. Where that is true, the compound page says so, and the curve is a rough model rather than a measurement. Amounts shown describe published research only.
Not medical advice
Nothing here is medical advice, a recommendation, or an instruction for human or veterinary use. Most of what is listed here is a research chemical rather than an approved drug; where one is a licensed medicine somewhere, its page says so. If you want care for a health condition, talk to a licensed clinician.