Mushroom calculators

Free tools built for Canadian growers. No login, no email — just the math.

• Substrate calculator

  Enter bag or bucket size — get substrate mix, water ratio, and sterilization time.

• Fruiting chamber sizing

  Enter species, container, and count — get minimum chamber volume, FAE rate, and a fan recommendation.

• Yield estimator

  Enter species, substrate, weight, and flush count — get a low/mid/high yield range.

• Spawn calculator Soon

  Enter substrate weight — get recommended spawn ratio and inoculation guidance.