Email: [email protected] — or use the
feedback form to report a specific calculator issue.
What to include
For tool corrections: which calculator, what input values you used, and what you expected vs. what you got. For new tool requests: what it should calculate and why it'd be useful on a real job.
Before you write in
Every calculator's guide section (below the results) explains the formula and assumptions used — worth a quick check in case the answer is already there. All figures on this site are estimates for planning purposes; always confirm critical specs against your equipment's own datasheet before ordering hardware.