UnitCoreTools - Unit Converter

Convert between 600+ units across 34 categories — length, mass, currency, coordinates & more. Select text → right-click → Convert.

The fastest, privacy-first unit converter. 600+ units, smart right-click detection, and works entirely offline. UnitCoreTools is a lightweight, powerful extension designed to handle all your conversions instantly. Built with performance and privacy in mind, it operates entirely offline without ads or tracking. It is fully localized in 20 languages and adapts to your preferred style. 🚀 EXTENSION FEATURES: 🖱️ Smart Context Menu (Right-Click Convert) Select any text on any webpage - measurement, hex color code, coordinates or a timestamp → right-click, and choose "Convert with UnitCoreTools." Our smart engine auto-detects the format and shows you the conversion instantly. ⚡ Instant Popup Converter Access 636 units across 34 categories without leaving your current tab. Whether you are a developer calculating data storage and number bases, a designer working with typography and colors, or an engineer needing torque and voltage calculations, we have you covered. We also support everyday conversions like length, mass, and temperature, plus major world currencies with a manual offline rate override. 🎨 Beautiful & Customizable • 10 Color Themes: Customize your interface by choosing your favorite look from 10 distinct styles, including Light and Dark modes. • 20 Languages: Fully localized interface (English, Spanish, French, German, Japanese, Arabic, and more). 🔒 Privacy-First & Offline UnitCoreTools runs locally in your browser. • No Ads. • No User Profiles. • No Tracking Cookies. • Works 100% Offline. 🔗 Seamless Integration with UnitCoreTools.com The extension includes a one-click "Open in Web" button that transfers your current conversion directly to our full website. Enjoy the exact same free, ad-free experience with an even larger toolset: • Expanded Library: Access over 600 units, including advanced geo and coordinate formats. • Batch Mode: Convert multiple values or CSV lists at once. • Shareable Lists: Create custom conversion setups and generate short links to share with colleagues. Simple. Fast. Private. Get UnitCoreTools today.