HoverConvert – Instant Hover Unit Converter

Convert units instantly by simply hovering over them — temperature, metrics, imperial, and more. Fast, clean, effortless.

HoverConvert - Instant Unit Conversions Convert units instantly by hovering over them. No clicking, no searching - just hover and see. Stop copying values into conversion calculators. HoverConvert automatically detects units on any webpage and shows conversions in a clean tooltip the moment you hover over them. How It Works Simply hover over any unit value like "100°F" or "5km" and instantly see conversions appear. That's it. No clicks, no popups, no interruptions to your browsing. Supported Conversions Temperature - °C, °F, Kelvin Distance - km, miles, meters, feet, inches, yards, cm, mm Weight - kg, pounds, ounces, grams, stones Speed - mph, km/h, m/s, knots Volume - liters, gallons, ml, fl oz, cups, pints, quarts, tbsp, tsp File Size - bytes, KB, MB, GB, TB (and binary KiB, MiB, GiB) Developer Units - px, rem, em, pt, vw, vh Powerful Customization - Choose your targets - Select exactly which units you want to convert to. Want feet to show meters AND inches? Done. - Site blacklist - Disable conversions on specific websites - Precision control - Set decimal places from 0-4 - Category toggles - Enable only the unit types you need - Alt-key mode - Only show conversions while holding Alt Privacy First HoverConvert works entirely in your browser. No data is sent anywhere. No tracking. No accounts. Perfect For - Travelers reading foreign websites - Developers working with different unit systems - Home cooks converting recipes - Students studying international content - Anyone tired of Googling "X to Y conversion" --- Lightweight. Fast. Private. Just hover and convert.