Your clinic gave you a number. This shows you the line on the syringe.

What it does

You type the amount your clinician gave you. Peptimark converts it into a volume and shows you where the plunger stops, on a syringe rendered with the real tick spacing of the model you pick.

That is the whole thing. It does not tell you what to take, and it never will.

Why the drawing matters

A U-100 1 ml barrel has a line every two units, and the odd numbers have no line at all. A U-40 holds two and a half times as much per marking. Both are in circulation, and they look almost identical in the hand.

Five syringe types, each one built to the geometry printed on the barrel.

When the number does not land on a line

Most of the time it does not. Peptimark says so, in plain words, and then shows you which reconstitution volume would make your amount fall exactly on a marking instead of between two.

Works in airplane mode

The calculator makes no network requests, ever. Nothing about your vials leaves the device — there is no account required and no server involved in the calculation.

Free to start

The calculator, the syringe drawing, and 2 vials stay free for good. Every new device also gets 14 days with everything unlocked — unlimited vials, reminders, and photo scans.

After that, unlimited access is a single payment of €13.99 plus VAT. No subscription. VAT is added at checkout based on your country.