Mushroom Dosage Calculator
Educational estimator for legal harm-reduction planning. This tool does not replace professional medical advice.
How this dosage calculator works
A mushroom dosage calculator helps you convert a rough target experience into a more consistent starting amount. The estimate on this page uses three big factors: body weight, intensity goal, and potency. Potency can vary dramatically between species, strains, and even batches, so every estimate should be treated as conservative and approximate.
If you are in a location where psychedelic mushrooms are illegal, do not use them. If legal where you live, always prioritize safety, informed consent, and a low-and-slow approach.
Reference ranges (dried mushrooms)
| Intensity | Typical Dried Range | General Notes |
|---|---|---|
| Microdose | 0.05g – 0.30g | Usually subtle, often used on non-consecutive schedules. |
| Light | 0.5g – 1.2g | Mild perceptual and mood effects. |
| Moderate | 1.2g – 2.2g | Noticeable cognitive and sensory changes. |
| Strong | 2.2g – 3.5g | Intense psychological effects; set and setting matter greatly. |
| Intense | 3.5g+ | High-risk territory; not recommended for inexperienced users. |
Step-by-step: use the calculator responsibly
1) Start with accurate inputs
Enter body weight and choose the correct unit. Then pick your intended intensity and estimate potency as honestly as possible. If you are unsure about potency, leave it at 1.0 and reduce your final amount further.
2) Choose form correctly
Dried mushrooms are much lighter than fresh due to water loss. A common conversion is: 1g dried ≈ 10g fresh. This is why selecting the correct form changes your final number.
3) Use the low end of the range first
- Take the lower bound from the result, not the upper bound.
- Wait at least 90–120 minutes before deciding whether effects are still rising.
- Avoid re-dosing quickly; stacking doses can lead to unexpectedly intense experiences.
Safety checklist before any session
- Have a trusted sober sitter for anything beyond a light dose.
- Prepare a safe, calm environment with water and comfortable seating.
- Do not drive or operate machinery for the rest of the day.
- Keep communication open and avoid crowded, unpredictable settings.
- If distress becomes severe, seek medical help immediately.
Why potency adjustment matters so much
Potency variation is one of the biggest reasons two identical gram amounts can feel very different. Species differences, storage conditions, age, and uneven mixing in powdered material can all influence strength. The potency multiplier in this calculator is intentionally simple:
- 0.8 = weaker than average batch
- 1.0 = average batch
- 1.3+ = stronger than average batch
If you are not certain, assume stronger rather than weaker and reduce the amount.
FAQ
Is this a medical tool?
No. This is an educational estimate to support harm-reduction planning.
Can body weight alone predict the right dose?
Not perfectly. Sensitivity, sleep, mindset, tolerance, medications, and potency often matter more than weight. Weight is only one variable.
What if I am taking antidepressants or other medications?
Do not guess. Talk to a licensed clinician familiar with drug interactions. Some medications can blunt effects or increase risks.
Bottom line
A dosage calculator for mushrooms is best viewed as a starting framework, not a guarantee. Start low, avoid combinations, prioritize support, and always respect your legal and health context.