Steroid Cycle Plotter & Visualizer

Graph Your Cycle

This calculator helps visualise your whole Anabolic Steroids Cycle by mapping peaks/amount of active steroid compounds (mg/day) inside your body. Helps to easily plot the active compounds/peaks on a chart to better understand the impact of a steroid cycle. Export/print your results in multiple formats such as Image/PDF/CSV/XLS etc
This calculator is a heavily updated version of steroidcalc, which isn't available anymore over the internet.
Human physiology differs from person to person, no matter how accurate a calculator is, it'll never be 100% accurate. Therefore, use at your own risk.

How to calculate Half-life of a steroid

Basically every drug has a half live, steroids included. If for example, you were to inject 200mg of Decadurabolin once weekly, for 6 weeks, how would you know when you were "off"? Would you be "off" when you had finished your last dose? You would be able to calculate this from the half live of Deca. The half live of Deca is around 14 days. This means that 14 days from your last shot of 200mg of Deca, your blood levels of Deca will contain 100mg of the steroid. Another 14 days from then, i.e. 28 days from last dose, your blood levels will contain 50mg of the steroid. This amount then keeps halving every 14 days. Therefore you can clearly see that when you finish your cycle, even though you are not putting any steroids into your body, you may think that you are now "off", however you still have, and will still have for some time after your last dose, "active" blood levels of the steroid. Therefore you can plan what to use, how long for, and how long off your cycle, based on these half live's.


Rate of compound release (mg/day)

Active Half-life of all steroids

Formula used for calculation

Release(t) = Dose • ActiveDose% • e^(-t*λ) • λ
λ = log(2) / HalfLife


User acknowledges that the information in the Website is provided “as is” and for educational purposes only. All of the values within are estimates and may not be accurate. SteroidWiki does not provide medical advice.