This Sawdust calculator for mushroom cultivation makes it easy to determine exactly how much water to add to your sawdust based on your desired hydration percentage typically between 40% and 60%, depending on the species and your growing conditions. For example, 50% hydration means that for every 1 kg of dry sawdust, you’ll need 1 liter (1 kg) of water to achieve optimal consistency.
Use the calculator below to plug in your sawdust weight and select your preferred hydration level. Whether you’re mixing up small test batches or scaling up for larger grows, this tool helps you get precise, consistent results every time.