UnitShift - Unit Converter

About

UnitShift is the fastest way to convert any unit while browsing the web. Highlight any number on any page, right-click, and get instant conversions in a floating panel — no tab switching, no copy-pasting.

FREE FEATURES
- 6 everyday categories: Length, Weight, Temperature, Volume, Speed, Area
- Highlight any number on any webpage → instant floating conversion panel
- Auto-detects the unit from surrounding text (highlights "5 miles" → knows it's Length)
- Shows top 3 conversions simultaneously
- Popup converter with live calculation as you type
- Swap units with one click
- Copy result to clipboard instantly
- Recent conversions history
- Keyboard shortcut: Cmd+Shift+U (Mac) / Ctrl+Shift+U (Windows)

PRO FEATURES — $4.99/month
- 11 additional scientific categories: Pressure, Energy, Power, Concentration, Data, Force, Frequency, Torque, Density, Flow Rate, Radiation Dose
- Perfect for engineers, scientists, researchers, and medical professionals
- Unlock via license key from the settings page

PERFECT FOR
- Students and researchers working with scientific papers
- Engineers switching between metric and imperial
- Travelers converting currencies and distances
- Medical professionals working with lab values
- Anyone tired of opening a new tab just to convert a unit

Privacy: All conversions happen locally in your browser. No data is collected or transmitted.