Free, standalone tools for peptide, GLP-1 and hormone protocol math — no account required, nothing saved. Want your dose history, inventory and cost tracking saved automatically instead of recalculated every time? See the full Peptide Plug app →
Are these tools really free, with no account?
Yes — every calculator on this page runs entirely in your browser, requires no sign-up, and doesn't save anything. The optional email field on some pages is only for hearing about new tools, not for using the calculator itself.
How is this different from the full Peptide Plug app?
These standalone tools do one-off math with numbers you type in fresh each time. The full app saves your cycles, tracks dose history and inventory over time, sends low-stock and expiration alerts, and includes features like estimated levels built from your actual logged doses rather than hypothetical inputs.
Which calculator should I start with?
Do these tools give medical advice or recommend doses?
No. Every tool on this page performs arithmetic and unit conversion based on numbers you provide — none of them recommend, validate, or suggest what dose, frequency, or protocol is appropriate for you. That determination belongs with a licensed clinician.
Is my data saved anywhere when I use these tools?
No — all calculations happen locally in your browser and nothing is transmitted or stored, aside from an email address if you voluntarily submit one to hear about new tools.
Can I suggest a calculator you haven't built yet?
Yes — reach out through the contact link on the main site. New tools are prioritized based on what people search for and request most.
Are the half-life figures used across these tools the same everywhere?
Yes — the Half-Life Visualizer, the Half-Life Data Table, and any compound-specific calculators all pull from the same sourced reference library, so a compound's half-life is consistent no matter which tool you're using.
Do I need to create an account to use the full Peptide Plug app instead?
Yes, a free account is required for the full app since it saves your data across sessions and devices — but the free tier covers core dose logging and inventory tracking with no cost.
See the app →