Terms of Use

Last updated: August 29, 2026.

General use

You may use our public calculators for personal and commercial project planning. You may not copy, scrape, republish or resell our site content or calculator interface as your own service.

No warranty

Results are estimates based on the inputs and assumptions shown. We do not guarantee that an estimate will match actual material usage, supplier packaging, labor requirements or project cost.

Responsibility

You are responsible for verifying measurements, product specifications and applicable project requirements before purchasing materials or beginning work.

Advertising

If display advertising is activated, ads are third-party commercial inventory and are not endorsements, project specifications or replacements for the product and safety checks described on this site.