Shrooms Microdose Calculator
This shrooms microdose calculator helps you determine a starting dose for dried psilocybin mushrooms. Please note this is an estimate for harm reduction purposes. Potency varies greatly. Always start low.
Please enter a valid weight.
Recommended Microdose (Dried)
0.13 g
Formula: (Standard Recreational Dose / 10) * Potency Factor * Weight Adjustment. This provides a sub-perceptual starting point.
Your Fadiman Protocol Schedule
| Day 1 | Day 2 | Day 3 | Day 4 | Day 5 | Day 6 | Day 7 |
|---|
This table visualizes your chosen microdosing schedule over one week.
Dose Comparison Chart
This chart compares your calculated microdose to a threshold dose and a standard recreational dose.
What is a Shrooms Microdose Calculator?
A shrooms microdose calculator is a digital tool designed to estimate a sub-perceptual dose of psilocybin-containing mushrooms, commonly known as magic mushrooms. The primary goal is to find a dosage that is high enough to elicit potential therapeutic or cognitive benefits—such as enhanced creativity, focus, or mood—but low enough to avoid any overt psychedelic effects or hallucinations. This allows individuals to continue with their daily activities without impairment. A reliable shrooms microdose calculator uses key inputs like body weight, mushroom type, and dosing protocol to provide a scientifically-grounded starting point for users, prioritizing safety and harm reduction.
This tool is for anyone curious about the practice of microdosing. Common misconceptions include the idea that microdosing will make you “trip” or feel high. In reality, a proper microdose should be sub-perceptual, meaning you shouldn’t feel overt psychoactive effects. Our shrooms microdose calculator is engineered to help you find that precise, subtle starting point.
Shrooms Microdose Calculator Formula and Explanation
The calculation for a microdose is not standardized, but it is generally accepted to be between 1/10th and 1/20th of a standard recreational dose. Our shrooms microdose calculator uses a formula based on established harm-reduction principles, adjusting for key variables to provide a personalized estimate.
The core formula is:
Microdose (g) = (BaseDose / 10) * PotencyFactor * WeightAdjustmentFactor
Here’s a step-by-step breakdown:
- Establish a Base Dose: We start with a conservative standard recreational dose of 2 grams (2000 mg) of dried Psilocybe cubensis. A microdose is typically 1/10th of this, giving a baseline of 0.2 grams.
- Apply a Potency Factor: Different mushrooms have vastly different psilocybin concentrations. The calculator adjusts the dose based on whether the mushroom is of standard, high, or mild potency.
- Adjust for Body Weight: While not the most critical factor for psychedelics, body mass can have a minor influence. The calculator applies a slight adjustment for weights significantly above or below the average (75 kg).
Variables Table
| Variable | Meaning | Unit | Typical Range |
|---|---|---|---|
| Body Weight | User’s body mass | kg | 40 – 130 |
| Potency Factor | Multiplier for mushroom strength | – | 0.7 (Mild) – 1.4 (Potent) |
| Weight Adjustment | Slight dose scaling based on weight | – | ~0.95 – ~1.05 |
| Microdose | The final calculated sub-perceptual dose | grams (g) | 0.05 – 0.30 |
Practical Examples (Real-World Use Cases)
Example 1: A Cautious Beginner
Sarah weighs 60 kg and wants to start microdosing with standard Psilocybe cubensis mushrooms she has acquired. She’s using the popular Fadiman protocol. She enters her details into the shrooms microdose calculator.
- Inputs: Weight = 60 kg, Potency = Standard (1.0x), Protocol = Fadiman
- Outputs: The calculator suggests a starting microdose of approximately 0.11 g.
- Interpretation: Sarah would take 0.11g of dried mushrooms on Day 1, then take a break on Days 2 and 3 before repeating the cycle. This low dose is designed to be safely sub-perceptual, allowing her to assess her sensitivity without disrupting her routine.
Example 2: An Experienced User with Potent Mushrooms
Mark weighs 90 kg and has experience with psychedelics. He has a potent species like Panaeolus cyanescens and wants to follow the Stamets protocol for a month. He uses the shrooms microdose calculator for a safe starting point.
- Inputs: Weight = 90 kg, Potency = Potent (1.4x), Protocol = Stamets
- Outputs: Even with a higher body weight, the calculator provides a cautious dose of around 0.20 g due to the high potency multiplier.
- Interpretation: Mark’s calculated dose is higher than Sarah’s, but still well within the microdose range. The calculator correctly tempers the dose to account for the mushroom’s high potency, preventing an accidental mini-dose. He would follow a 4-days-on, 3-days-off schedule.
How to Use This Shrooms Microdose Calculator
Using this shrooms microdose calculator is straightforward. Follow these steps for an accurate and safe estimation:
- Enter Your Body Weight: Input your weight in kilograms (kg). If you know your weight in pounds, divide by 2.2 to convert.
- Select Mushroom Potency: Choose the option that best describes your mushrooms. If you are unsure, always select “Standard” and start with an even lower dose than calculated.
- Choose a Dosing Protocol: Select a popular protocol like Fadiman or Stamets. This will update the schedule table to help you plan your routine.
- Review Your Results: The calculator will instantly display a primary result—your recommended microdose in grams. It also shows intermediate values to explain how it reached that number.
- Analyze the Chart and Table: Use the dynamic chart to see how your dose compares to other levels and the table to understand your weekly schedule.
Decision-Making Guidance: The result from this shrooms microdose calculator is a starting point, not a definitive rule. It is crucial to start with this dose (or even slightly less) and observe its effects. If you feel any psychoactive effects, your dose is too high. If you feel nothing after several cycles, you might consider a very slight increase. Always listen to your body.
Key Factors That Affect Microdosing Results
Many factors beyond the inputs of a shrooms microdose calculator can influence your experience. It’s vital to be aware of them for a safe and effective journey.
- Mushroom Species & Strain: The psilocybin content can range from 0.3% to over 2% of the mushroom’s dry weight. Psilocybe azurescens is far more potent than Psilocybe cubensis.
- Fresh vs. Dried: Fresh mushrooms are about 90% water. A 1-gram dose of fresh mushrooms is roughly equivalent to 0.1 grams of dried mushrooms. This calculator is for DRIED mushrooms only.
- Individual Metabolism: Your unique body chemistry affects how you process psilocybin. Two people can have different reactions to the exact same dose.
- Tolerance: If you use psychedelics regularly, you will build a tolerance, meaning you’ll need a higher dose to achieve the same effect. Protocols include “off” days specifically to mitigate tolerance buildup.
- Set and Setting: “Set” refers to your mindset (mood, intentions, expectations) and “setting” to your physical environment. A positive mindset and a comfortable, safe environment can greatly improve your experience, even at sub-perceptual doses.
- Stomach Contents: Taking a microdose on an empty stomach may lead to a faster onset and slightly stronger perceived effects compared to taking it after a large meal.
Consulting a guide on psilocybin benefits can provide further context on how these factors interact.
Frequently Asked Questions (FAQ)
1. Is the result from the shrooms microdose calculator 100% accurate?
No. This shrooms microdose calculator provides an educated estimate for harm reduction. Mushroom potency varies wildly due to genetics, growing conditions, and storage. Always treat the calculated value as a starting point and begin with caution.
2. What should I feel on a microdose?
Ideally, you should feel “sub-perceptual” effects. This might manifest as a slightly better mood, more creative thoughts, or increased focus, but you should not feel “high,” see visuals, or have altered perceptions. If you do, your dose is too high.
3. Can I use this calculator for fresh mushrooms?
This calculator is specifically calibrated for DRIED mushrooms. As a general rule, fresh mushrooms are about 10 times heavier than dried ones. To use a fresh equivalent, you would multiply the calculated dried dose by 10 (e.g., 0.1g dried ≈ 1g fresh).
4. How important is body weight in the calculation?
Unlike substances like alcohol, the effects of psilocybin are not as strongly correlated with body weight. It plays a minor role. Your individual brain chemistry and sensitivity are far more significant factors, which is why starting low is so critical.
5. What is the difference between the Fadiman and Stamets protocols?
The Fadiman protocol (1 day on, 2 days off) is designed to prevent tolerance and allow for easy integration. The Stamets protocol (4-5 days on, 2-3 days off) involves more frequent dosing and is often combined with other supplements like Lion’s Mane and Niacin. You can learn more about a psilocybin microdosing schedule here.
6. What do I do if I don’t feel anything?
That might be the point. A microdose isn’t supposed to be an intense experience. However, if after a few cycles (e.g., 1-2 weeks) you feel no subtle changes at all, you could consider increasing your next dose by a very small amount (e.g., 0.02g).
7. Why is there a “Copy Results” button?
This feature allows you to easily save a snapshot of your calculated dose and the parameters used. You can paste this into a journal or notes app to track your microdosing journey and any adjustments you make over time, which is a highly recommended practice.
8. Is microdosing legal and safe?
Psilocybin is a controlled substance in most parts of the world, making it illegal to possess. While generally considered physiologically safe, there can be psychological risks, especially for individuals with a history of psychosis or certain mental health conditions. This shrooms microdose calculator is for educational and harm reduction purposes only. Always be aware of your local laws and consult a medical professional.