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.