# Online Compass

> Browser tools for compass headings, decimal and DMS coordinates, device altitude, and initial bearings between coordinates.

Pages are available as HTML or Markdown. Request a page with `Accept: text/markdown`, or follow its `.md` link below. The homepage uses `/index.md`. Markdown contains page guidance; live sensor and location readings require user interaction in a browser. Manual angles are unverified.

The canonical website is https://onlinecompass.lol/. Markdown metadata identifies the corresponding canonical HTML page.

## Tools

- [Compass and sensor guidance](https://onlinecompass.lol/index.md): Check compass permissions, north references, and heading limitations.
- [Coordinates and device altitude](https://onlinecompass.lol/coordinates.md): Convert decimal degrees and degrees, minutes, seconds; read device location when available.
- [Initial bearing calculator](https://onlinecompass.lol/bearing.md): Calculate the initial great-circle bearing between two coordinates.
- [Navigation guides](https://onlinecompass.lol/blog.md): Browse published English guides.

## Localized tools

- [فارسی](https://onlinecompass.lol/fa/compass.md)
- [ไทย](https://onlinecompass.lol/th/compass.md)
- [Türkçe](https://onlinecompass.lol/tr/compass.md)
- [العربية](https://onlinecompass.lol/ar/compass.md)
- [Русский](https://onlinecompass.lol/ru/compass.md)
- [Bosanski](https://onlinecompass.lol/bs/compass.md)
- [Oʻzbekcha](https://onlinecompass.lol/uz/compass.md)
- [Português (Brasil)](https://onlinecompass.lol/pt-BR/compass.md)
- [हिन्दी](https://onlinecompass.lol/hi/compass.md)
- [Italiano](https://onlinecompass.lol/it/compass.md)
- [Deutsch](https://onlinecompass.lol/de/compass.md)
- [Hrvatski](https://onlinecompass.lol/hr/compass.md)
- [Български](https://onlinecompass.lol/bg/compass.md)
- [עברית](https://onlinecompass.lol/he/compass.md)
- [پښتو](https://onlinecompass.lol/ps/compass.md)
- [简体中文](https://onlinecompass.lol/zh-hans/compass.md)
- [日本語](https://onlinecompass.lol/ja/compass.md)
- [한국어](https://onlinecompass.lol/ko/compass.md)
- [Nederlands](https://onlinecompass.lol/nl/compass.md)
- [Қазақша](https://onlinecompass.lol/kk/compass.md)
- [Français](https://onlinecompass.lol/fr/compass.md)
- [اردو](https://onlinecompass.lol/ur/compass.md)
- [বাংলা](https://onlinecompass.lol/bn/compass.md)
- [Srpski](https://onlinecompass.lol/sr/compass.md)
- [Bahasa Indonesia](https://onlinecompass.lol/id/compass.md)
- [Latviešu](https://onlinecompass.lol/lv/compass.md)
- [Čeština](https://onlinecompass.lol/cs/compass.md)
- [മലയാളം](https://onlinecompass.lol/ml/compass.md)
- [Malayalam coordinates](https://onlinecompass.lol/ml/coordinates.md)
- [Malayalam bearing calculator](https://onlinecompass.lol/ml/bearing.md)

## Help and methodology

- [Help](https://onlinecompass.lol/help.md): Browser permissions, sensor availability, and troubleshooting.
- [Methodology](https://onlinecompass.lol/methodology.md): How headings, coordinates, altitude, and bearings are interpreted, with their limitations.
- [About Online Compass](https://onlinecompass.lol/about.md): Site purpose and contact information.
- [Privacy](https://onlinecompass.lol/privacy.md): Browser readings and site analytics.

## Published guides

- [Use a phone compass in your browser](https://onlinecompass.lol/blog/use-a-phone-compass.md): Start a browser compass, read its north reference and accuracy, and handle permission or sensor failures.
- [Calibrate your phone compass](https://onlinecompass.lol/blog/calibrate-phone-compass.md): Check interference, permission and freshness before trusting a drifting phone heading.
- [Magnetic north vs. true north](https://onlinecompass.lol/blog/magnetic-and-true-north.md): Separate a phone heading from a geographic route bearing before comparing their numbers.
- [Read GPS coordinates, accuracy and altitude](https://onlinecompass.lol/blog/read-gps-coordinates.md): Read signed latitude and longitude, convert decimal degrees to DMS, and understand the accuracy and altitude your browser reports.
- [Calculate a bearing between two coordinates](https://onlinecompass.lol/blog/calculate-a-bearing.md): Calculate an initial geographic bearing, check coordinate order and north reference, and understand great-circle distance and changing direction.
- [Phone compass not working? Checks to try](https://onlinecompass.lol/blog/phone-compass-not-working.md): Troubleshoot denied motion access, unsupported sensors, relative-only rotation, stale readings and an unavailable True North correction.