Here’s a handy tool to help you calculate the ingredients needed for a precise batch of kombucha! For a lot more info about kombucha making, be sure to read All About Kombucha!
Author and founder of Fermenters Club. I’ve been fermenting food for 14 years.
In 2024, I published my first book, Fearless Fermenting.
When not stuffing things into jars, I enjoy permaculture gardening, cooking, yoga, writing, and studying cosmology and esoteric traditions.



Why do you go by 2 then 1 tea bags added per fluid quart instead of just 2 every fluid ounce?
really handy, thank you for making this, I populated a spreadsheet using it for the cookbook
the calculator is no showing up, I have tried different browsers, clearing cache and on PC still won’t show up
where is the calculator?
Sometimes the calculator doesn’t show up properly. Try refreshing the page, or clearing the browser cache/cookies. If that doesn’t work, you can try it on another web browser. Hope that helps!
Great, great, great!