About SacredRadar
Free, private homeowner finance calculators with documented formulas and cited sources.
What we built
SacredRadar is a set of interactive calculators for homeowners and homebuyers. Every tool shows its formula, cites its sources, and works entirely in your browser — no account required, no data sent to a server.
Why we built it
Most finance calculators hide their assumptions or require an email to see results. We think the math should be transparent, the data should be cited, and the user should stay in control.
How to use it
Pick a calculator, enter your numbers, and see live results. Every detail page includes a worked example, a sensitivity table, and a link to the full methodology. Property tax pages include an interactive estimator for any home value.
Disclaimer
SacredRadar provides estimates for informational purposes only. We are not financial advisors, tax professionals, or attorneys. Always consult a qualified professional before making financial decisions.