# chiron calculator > Find your Chiron sign, degree, retrograde status and house. Free, local calculations with clear handling of unknown birth times. No account needed. Canonical website: https://chironcalculator.org/. Public content reviewed 2026-09-09. This is a public website guide, not an access policy or a chart API. The tool uses local browser computation. Birth details and personal results are not included in these files. A date-only result may establish a sign or retain candidates; a house needs an exact, unambiguous time and a place. Interpretations are authored symbolism, not clinical or factual predictions. The Markdown documents below use the same reviewed content as their HTML counterparts. /llm.txt redirects to this file. This voluntary discovery file does not guarantee indexing, AI citations or ranking. ## Calculator and method - [Tool guide](https://chironcalculator.org/index.md): Inputs, outputs, unknown-time handling, result checks and privacy boundaries. - [Methodology](https://chironcalculator.org/methodology.md): Astronomical convention, numerical allowances, historical timezone limits, house systems and original source links. - [Interactive calculator](https://chironcalculator.org/): Actual local computation, labelled examples, correction, copy and print. JavaScript is required for calculation, not for reading the public method. ## Policies and identity - [About](https://chironcalculator.org/about.md): What the independent site does and does not offer. - [Privacy](https://chironcalculator.org/privacy.md): Local input handling, static network metadata and exports. - [Terms](https://chironcalculator.org/terms.md): Purpose, acceptable use and limitations. ## Optional - [Combined public text](https://chironcalculator.org/llms-full.txt): The complete tool guide and policy/method documents. No private user data. - [Software and data notices](https://chironcalculator.org/licenses.txt): Third-party attribution. - [Canonical HTML sitemap](https://chironcalculator.org/sitemap.xml): The five public pages, not per-user charts.