🍄 Free Magic Mushroom Calculators & Tools

Science-based tools for safe, informed psilocybin experiences. From dosage and tolerance to substrate mixing and legality — all free, no registration required.

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Calculators and resources covering every aspect of your grow and experience

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Data grounded in psilocybin research and cultivation best practices

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Frequently Asked Questions

The magic mushroom dosage calculator estimates a recommended dose based on your chosen strain and experience level. Each strain has a known average psilocybin content, and the calculator uses that to give you a weight in grams. Because potency varies between batches and individual mushrooms, always start at the lower end of any suggested range.
Microdosing means taking a sub-perceptual dose, typically 0.1g to 0.3g of dried Cubensis, with the goal of improving focus or mood without a full psychedelic effect. Most people follow a schedule such as one day on, two days off, to avoid building tolerance. Our dosage calculator includes microdose as one of its five selectable experience levels.
Most people need to wait at least two weeks between psilocybin experiences to avoid diminished effects from tolerance. Psilocybin causes a rapid and strong cross-tolerance with other psychedelics, meaning the same dose will feel noticeably weaker if taken too soon. Our tolerance calculator works out exactly how long to wait based on your last dose size.
CVG substrate is a growing medium made from coco coir, vermiculite, and gypsum, and it is one of the most popular choices for home mushroom cultivation. The standard ratio is 4 parts coco coir to 2 parts vermiculite to 1 part gypsum by volume, though this can vary slightly. Our CVG calculator adjusts these amounts automatically based on your container size.
The legal status of psilocybin mushrooms varies widely by country and US state. Some places have fully decriminalized personal possession, others allow regulated therapeutic use, and many still treat it as a controlled substance. Our magic mushroom legality map gives you an up-to-date overview by region so you can quickly check the rules that apply to you.
Yes. Psilocybin content differs noticeably between strains. A strain like Golden Teacher sits at around 0.63% psilocybin by dry weight, while more potent varieties such as Penis Envy can reach 1.0% or higher. That difference is significant enough that the same physical weight of mushrooms can produce a much stronger experience depending on the strain, which is exactly why a strain-specific calculator is more accurate than a generic dose guide.