Get in touch
Corrections, better sources, bug reports, requests for a new calculator: send them our way. That's how this site gets more accurate and more useful.
How to reach us
Email's the best way to reach us:
- Email contact@compost.tools: corrections, data suggestions, bug reports, general questions, or a calculator you'd like to see. We read every message.
What's most useful to send
If a number looks wrong, a citation helps a lot: a university extension publication, a USDA/EPA dataset, or a peer-reviewed source. That lets us fold the fix straight into the methodology with a source attached. For new calculator ideas, just tell us the decision you're trying to make (and the units you think in), that's the most useful thing you can send.
What we can't do
We can't give you individualized agronomic or regulatory advice. If you're running a commercial or regulated composting operation, a certified soil lab and your local cooperative extension service are the right call, they can test your actual feedstocks, and no calculator can substitute for that.
Want to know who's behind the site first? Read about who writes compost.tools and our data methodology.