Terms of Use

Last updated: July 2026

Use of this site

All calculators are provided free of charge for informational and planning purposes only. Results are estimates based on standard industry rules of thumb and typical assumptions.

No professional advice

Nothing on this site constitutes engineering, contracting or safety advice. Equipment sizing, electrical work, gas work and plumbing must be confirmed and performed by licensed professionals in compliance with local codes. You use the results at your own risk.

Liability

We work to keep methods accurate and current, but we make no warranties of any kind and accept no liability for decisions made based on these tools.

Content

You may link to any page freely. Republishing calculator content wholesale without permission is not allowed.