Support 000345
Every calculator here is free, with no account and no paywall. Reader support and sponsors pay for hosting, new tools, video production, contest prizes and the people who build and check them.
Where your support goes
Operations
Hosting, domains, security and the time it takes to keep every formula checked and current.
New tools & content
Hiring tradespeople and writers to build new calculators and review existing ones.
Contests & prizes
Funding the monthly Square Corner Challenge and its prizes.
Promotion
Reaching more builders and DIYers through outreach, video and partnerships.
Choose an amount
Pick a one-time or monthly amount and leave your details. We'll reply with a secure payment link. You can also give anonymously.
Sponsor the project
Brands, suppliers and contractors can sponsor a calculator, a contest month or the video library. Sponsors are clearly labelled and never change our calculations.
Bronze
Calculator
- Logo and link on one calculator page
- Listed on supporter wall
Silver
Category
- Logo on every calculator in a category
- Mention in the monthly newsletter
Gold
Contest
- Presenting sponsor of a Square Corner Challenge month
- Prize placement and winner feature
Supporter wall
Our first supporters will be listed here. Be one of them.