About XCalculator

XCalculator is a collection of free online calculators. Each page is built around one search intent: enter your numbers, see the result immediately, then read the formula, a worked example and the sources.

What we aim for

• Formulas live in tested code, not only in marketing copy.
• Default results are in the HTML, so the answer is readable without JavaScript.
• When data can go stale (densities, planning rules), the page shows a review date.

What we are not

These tools are for planning and education. They are not professional advice for construction, medicine, tax, or investing. Confirm important decisions with a qualified professional or your supplier.

Contact

Questions or corrections: hello@xcalculator.cc. See also how we calculate and our privacy policy.