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Plumbing Fixture Calculator

Required water closets and lavatories under Subsection 3.7.4. of the 2024 OBC, with Code references and calculation basis.

Add at least one use before printing a report.

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Check one use or tenant space, or set up floors and uses to determine the required fixtures for a building.

Professional Responsibility & Disclaimer

This tool is a design aid only. It does not certify Ontario Building Code compliance, provide legal advice, or give an official Code interpretation, and it is not affiliated with or endorsed by any government authority. Every result must be independently verified against the current Ontario Building Code (O. Reg. 163/24, as amended) by a qualified design professional. The architect or designer of record remains solely responsible for Code compliance and for all information used in any permit application or construction. Provided "as is," without warranty of any kind, and used entirely at your own risk.