MM↔IN Converter

Convert millimeters and inches quickly via popup and context menu.

Short description: - Convert mm ↔ inch instantly in a popup or via right‑click, and copy results as text or images. Long description: - Quickly convert between millimeters and inches directly from the browser toolbar popup. - Prefill from right‑click: convert selected text via "Convert selection (mm↔in)". - See results in Decimal Inches, Fractional Inches (1/16, 1/32, 1/64), and Feet + Inches, side by side. - Copy results as text or export as image for sharing or documentation. - Works entirely offline; English‑only UI. Key features: - Popup converter with precision and rounding controls. - Fraction denominators: 1/16, 1/32, 1/64. - Feet + Inches display with fraction formatting. - Right‑click integration to capture and convert selected text. - Copy results as text or image. - AWG, drill bits, paper sizes, socket sizes quick access. - Batch conversion and chart pages for frequently used values. - Offline conversion; no network requests. Permissions: - ContextMenus: Provides a right‑click action to prefill the popup with selected text. - Storage: Stores recent selection (seedText) locally to improve UX. - No host permissions, no Scripting, no ActiveTab, no ClipboardWrite. Privacy: - No tracking. Conversion runs locally. No data is sent to external servers. Injection policy: - None. The extension does not inject content scripts; conversion happens in the popup UI. Support and links: - Common conversions: https://mmtoinches.im/common-mm-to-inches-conversions/ - Fraction: https://mmtoinches.im/mm-to-inches-fraction/ - Feet + Inches: https://mmtoinches.im/mm-to-inches-feet/ - Chart: https://mmtoinches.im/mm-to-inches-chart/ - Batch: https://mmtoinches.im/mm-to-inches-batch/ - Privacy policy: https://mmtoinches.im/privacy-policy - Support email: support@mmtoinches.im Keywords: - mm, inch, inches, converter, fraction, feet, AWG, drill bit, paper size, socket Data usage: - No data collected. All conversions run entirely on‑device. - Uses `chrome.storage.session` (preferred) or `chrome.storage.local` to store only the last selected text (seedText); no Chrome Sync, no analytics, no tracking. - No network requests are made to developer servers. Privacy practices: - Data collection: None; we do not collect or transmit user data. - Data sharing: None; no third‑party sharing or selling. - Local storage only: last seed text is stored on the device to prefill the popup; no converter preferences are stored. - Data location: On‑device (`chrome.storage.local`), cleared when the user resets or uninstalls the extension. - Security: Minimal retention, no personal data, and no cross‑site tracking. All processing happens locally in the browser.