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Trades

Reference math for the jobsite.

Electrical (reference)

HVAC

  • BTU, ton, kW
  • CFM and static pressure Soon
  • R-value and RSI Soon

Plumbing

  • Pipe size converter Soon
  • Flow rate converter Soon
  • Drain slope calculator Soon

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Contact

Found a mistake or want a new calculator? Tell us.

HandyConvert has no contact form — we do not collect email addresses or run a mailing list. To reach us, email:

[email protected]

Useful things to include:

  • If you found an error, the tool name and the inputs you used — the page URL captures these, so just copy and paste it.
  • If you wish we had a tool or feature that doesn’t exist yet, let us know and we’ll look into it.