Peptide Dosage Calculator Guide

July 19, 2026 • 5 min read • Last updated: July 2026
Peptide dosage calculator on screen with pen and vial math

If you are trying to work out peptide reconstitution math, the main problem is not the maths itself. It is the stupid unit-switching, the half-explained pen click logic, and the fact a lot of peptide talk online assumes everyone already knows what 0.01mL, 1 IU, 250mcg, and 0.25mg mean without stopping to explain any of it.

That is why we built the SmartKoala Peptide Dosage Calculator. It handles the boring conversion part so you can see how much is in each unit or click, how many clicks you need for a target dose, and how many total doses your vial gives you.

Reconstitute, dose and store it right

The kit that keeps dosing accurate and your vials stored safely between uses. SmartKoala may earn from qualifying purchases.

What the calculator does

Why the pen mode matters

A lot of people get stuck here. For pen mode, the calculator assumes 1 click = 0.01mL, which is the same as 1 IU. So if you load 2mL, that gives you 200 IU total. If you load 2.5mL, that gives you 250 IU total. That is the cleanest way to think about it.

The calculator then works out how much peptide is sitting in each 0.01mL click based on your vial strength and how much liquid you added.

Simple example

Say you have a 10mg vial and you add 2.5mL of bac water.

If your target dose is 0.25mg, that works out to about 6.25 clicks.

What Klow and Glow make more annoying

Single-compound vials are simple. Blend products are where people get tripped up. That is why the calculator now supports better presets for blends like Klow 80mg and Glow 50mg or 70mg, instead of pretending every vial is a nice clean 10mg single.

Useful supplies

Important

This tool is for reconstitution math only. It does not tell you what dose to take, whether a protocol is appropriate, or whether a product is legitimate. It just helps you avoid unit mistakes once you already know the actual numbers you are working with.

Use the calculator here: Peptide Dosage Calculator