Email the site owner
Use this address for calculation issues, accessibility problems, suggestions or privacy questions. Do not send passwords, payment details or other sensitive information.
What to include in a calculation report
- The page you used and selected calculation task.
- The percentage basis: water, solution, or food plus water.
- Your entered quantities and units.
- The displayed result and the result you expected.
- Your browser and whether the issue occurs on a phone or computer.
You can use Copy result on a calculator page to prepare the values. Share calculation puts values into a link; include it in an email only if you want to disclose those quantities.
Questions about a recipe
For a recipe's denominator, process, treatment time or ingredient suitability, ask its author or the relevant food-preservation authority. The site owner can explain the calculator's arithmetic, but the calculator does not validate a curing or preservation process.