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What we're especially glad to hear about

• Errors in a calculation. If a result looks wrong for your project, tell us the numbers you entered and what you expected. The formulas are published on our about page, so corrections are easy to verify and quick to fix.
• Lighting scenarios we don't cover. The calculator currently handles patio and deck perimeters, straight runs across a yard, tree wrapping, and rooflines. If your project doesn't fit any of those, we'd like to know what it is.
• Confusing wording. If an input label or result made you hesitate, that's a problem worth fixing.
• Accessibility issues. If anything on the site is difficult to use with a screen reader, keyboard, or at high zoom, please tell us.

What we can't help with

• Electrical advice for your specific installation. We can explain general limits, but wiring questions need a qualified electrician who can see the job.
• Product recommendations or purchases. We don't sell lights and don't maintain a list of specific products to buy.
• Guaranteeing a quantity. The calculator produces planning estimates. Always verify against your own measurements before buying.

Advertising and privacy

For questions about the ads shown on this site or about your data, see the privacy policy first — it covers cookies, third-party advertising vendors, and how to opt out of personalised ads. If your question isn't answered there, email us using the address above.