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Have a question, suggestion, or found an issue with one of our calculators? We’d love to hear from you.

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  • Calculator feedback Tell us what worked, what was confusing, or what you expected to see and did not.
  • Technical issues A result that looks wrong, a field that will not accept a value, or a page that does not display properly.
  • Suggestions Crops, currencies, land units or yield units you would like supported, or a calculation worth adding.
  • General questions Anything about how the tools work or how a particular figure is arrived at.
  • Content corrections An error in a formula, an explanation, or a worked example. Please point to the page and the line.

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We read everything that comes in and reply where we can, though we are not always able to respond to each message individually. We are not able to give individual agronomic, financial, tax or legal advice.