Contact

Questions, corrections, or a calculator you wish existed? We want to hear it.

Email [email protected] and we’ll get back to you.

Found a number that looks wrong?

Tell us which tool and what you entered. The whole site rests on the math being right, so a flagged error gets checked fast. If a constant is off or a result doesn’t match what your supplier quoted, that’s exactly the kind of message worth sending.

Suggest a calculator

If you keep running the same takeoff by hand and wish a tool did it, send the job and the numbers you work with. The build list grows from what people actually ask for.