What we can help with
We welcome calculator questions, formula corrections, tool ideas, accessibility feedback, partnership enquiries, and privacy requests. Every message helps us make the site more useful and reliable.
Help us review a calculation
For the fastest, most useful response to a calculation question, include the calculator page, your length, width, depth, selected material, and the result you expected. If your supplier gave you a density or unit price, include that too. We can then check the assumptions rather than guessing.
Contact and response expectations
You can also email hello@gravelpilot.com. We review messages as soon as we can, but we cannot provide project-specific engineering advice, local price quotes, or emergency support. For structural, drainage, or load-bearing decisions, speak with a qualified local professional.
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