Contact

Want to report an issue, suggest an improvement, or ask a question about a calculator? Email us and include as much detail as you can.

Email

Support

We read every message. For the fastest help, include the calculator page URL and your exact inputs.

Email: [email protected]

Prefer not to share details? No problem — we don't store calculator inputs. See Privacy.

What to expect

  • Scope: We can help with calculator math, unit conversions, and site issues. We can't provide product-specific usage advice.
  • Privacy: We don't need personal details. Share only the page URL and your inputs.
  • Response: We aim to respond as quickly as possible, but times can vary.

Please include:

  • The page you were using (copy/paste the URL)
  • Your inputs (tank size, ratio, units, etc.)
  • What result you expected vs what you saw
  • Your device/browser (optional but helpful)

If your question is about mixing a specific product, we may only be able to help with the dilution math. Always follow the product label for legal rates, PPE, and safety instructions.

Email support

Popular tools