About 3D Tools Hub

3D Tools Hub is a growing hub of fast, free, privacy-friendly calculators and everyday tools. Where a problem is genuinely spatial — a room to paint, a box to pack, a shadow to trace — we bring it to life with interactive 3D so you can see the answer, not just read a number.

What we do

We build small, focused tools that do one job well: finance calculators, unit and percentage converters, generators, developer utilities, and 3D spatial calculators. Each tool comes with the formula it uses, a worked example, common mistakes to avoid, and answers to frequent questions, so you can understand the result rather than trust a black box.

How we keep results accurate

Every calculator is built on a standard, published formula and backed by an automated test suite that checks it against known values on each change. Where a result depends on real-world factors we can't fully capture — paint coverage, flooring waste, interest assumptions — we say so and suggest a sensible safety margin. When we find and fix an error, we correct it and note the change. See our Accuracy Policy for details.

Your privacy

Most tools run entirely in your browser: the values you enter and any files you process stay on your device and are not uploaded to our servers. Read how we handle data in our Privacy Policy.

Contact & feedback

3D Tools Hub is an independently run project, and reader feedback directly shapes what we build and fix. Spotted a mistake or want a tool that doesn't exist yet? Reach us via the contact page or request a tool. We read every message.