HoverConvert – Instant Hover Unit Converter

About

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"

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 Lightweight. Fast. Private. Just hover and convert.