Questions & corrections
Help make the next estimate better.
Send calculator feedback, a missing use case or an example that does not calculate as expected. This independently maintained project welcomes specific, reproducible reports.
hello@howmuchwillineed.comReporting a calculation issue
Include these details so the same calculation can be repeated:
- The calculator name or page address.
- The measurements, units and selected options you entered.
- The result shown, the result you expected and your working.
- Your browser and device if the issue involves the form or display.
A made-up example with the same problem is fine. There is no need to send your home address or other personal project details.
Suggesting an improvement
Explain what you are trying to estimate, which inputs you have and what would make the answer more useful. For a particular material, the manufacturer’s coverage or installation guide is helpful context.
For advice about a specific installation or a structural decision, speak to a suitable professional or the material supplier. Site support can investigate the calculator’s behavior, but cannot inspect or approve your project.