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Help us keep the numbers clear
Send a correction, point us to an updated official source or suggest a calculator that would be useful to people in Canada.
Corrections & questions
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Include the page URL and enough detail for us to check the issue.
New tools
Suggest a calculator
Tell us what it should calculate, who will use it, the relevant Canadian context, and a source for the formula or rules.
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Frequently asked questions
How do I report a calculation issue?
Email the calculator URL, the inputs used and the result you expected, along with a reliable formula or source if available.
Can you provide immigration or construction advice?
No. We can review website content and calculator behavior, but we do not provide individualized legal, immigration, engineering or contractor advice.
Can I suggest a calculator?
Yes. Send the calculation, the Canadian use case and a trustworthy reference for the method.