Mushroom Substrate Calculators

One of the most tedious parts of mushroom cultivation is remembering all the substrate ratios and recipe measurements. I kept finding myself searching online, digging through scattered guides and inconsistent information there was never a solid, central place that just calculated it all for you. So, I decided to build it myself. This collection of mushroom calculators is designed to simplify your workflow, cut down on prep time, and take the guesswork out of growing.

Our Mushroom calculators take away the guesswork and make substrate creation a fast and easy process:

CVG Substrate Calculator

Coco Coir, Vermiculite, and Gypsum (CVG) is one of the most reliable and widely used substrate blends in mushroom cultivation.

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Sawdust Calculator

This calculator helps determine how much water to add to sawdust based on your hydration preference—typically between 40% and 60%.

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Casing Layer Calculator

Calculate your 50/50 Peat Moss and Vermiculite mix for a proper casing layer with correct hydration levels.

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PF-Tek Calculator

Get perfect 2:1:1 BRF mixes by volume. Just enter the number of jars, and you’re good to go—great for PF-Tek users.

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Cold Water Pasteurization Calculator

Determine the exact amount of hydrated lime needed per liter of water for cold water pasteurization (2g/L).

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