LeeChuanjing is an independent project that publishes free construction and home improvement calculators. We started it because the same handful of calculations show up on every renovation, painting and landscaping job, and most people redo them by hand each time.
What we believe
- Calculations belong in your browser. Every tool runs as JavaScript on your device. We do not upload your inputs and we do not tie results to an account.
- Transparency over black boxes. Each tool page shows the formula, worked examples and a FAQ so you can verify the math, not just trust a number.
- Planning, not engineering. Our numbers help you size a budget and sanity-check a contractor quote. They are not a substitute for licensed professional work.
The regional cost idea
Our renovation budget tool scales a US baseline by an approximate regional index for the UK, Canada, Australia and Western Europe. This lets expats and remote planners compare ballpark costs across countries in one view. Indexes are planning factors, not live market pricing.
Who is behind it
LeeChuanjing is built and maintained by an independent maker with a background in architecture and web development. There is no ad network or analytics script loaded by default; if optional advertising is added later, it will be clearly separated from the tools.