Contact
Have a question, found a bug, or want to suggest a new calculator? We’d love to hear from you. CalcShed is a small team dedicated to building the best free construction and trade calculators on the web.
Get in Touch
The fastest way to reach us is by email:
General inquiries: hello@calcshed.com
Bug reports: support@calcshed.com
Content & partnerships: editorial@calcshed.com
We typically respond within 1–2 business days. For bug reports, please include the calculator name, what you entered, and what result you expected.
Report a Calculation Error
Accuracy is our top priority. If you believe one of our calculators is producing an incorrect result, please send us the following details:
- Calculator name and URL
- Input values you entered (dimensions, units, material selections)
- The result the calculator returned
- What you believe the correct result should be, with a source if possible
Every error report is reviewed against our Data Sources and, when necessary, cross-checked with industry references including DOT standards, NEC tables, and manufacturer specifications.
Suggest a Calculator
We’re always expanding our library. If there’s a calculator you’d find useful — whether it’s for construction, electrical, landscaping, plumbing, or another trade — email us at hello@calcshed.com with a brief description of what it should calculate and who it’s for.