Unit converter

Convert anything, instantly. 100% local.

Free unit converter

UnitFlip converts between all common units across eight categories: length, weight, temperature, volume, area, speed, data storage, and time. Results update in real time as you type, giving you instant answers without pressing a button. The tool supports metric, imperial, and US customary systems, making it useful whether you are following a European recipe or reading American building plans. All calculations happen locally in your browser.

Eight unit categories in one place

Instead of searching for separate converters for every unit type, UnitFlip gives you everything on a single page. Switch between categories with one click — convert kilometers to miles, kilograms to pounds, Celsius to Fahrenheit, liters to gallons, and much more. The data storage category handles bytes through terabytes, which is handy when comparing cloud storage plans or estimating file transfer times. Every conversion uses precise formulas with no rounding shortcuts.

Metric and imperial made simple

The metric system is used by most of the world, while the imperial system remains standard in the United States and a few other countries. This can create confusion when reading international recipes, travel guides, or technical specifications. UnitFlip eliminates that friction by showing the converted value instantly. It is especially helpful for students, travelers, engineers, and anyone who works with measurements from different regions on a regular basis.

Need to convert currencies instead of units? Use the Currency Converter for live exchange rates. For quick math on discounts and tax rates, check out the Percentage Calculator.

Check the time in any city using the timezone converter or switch between number systems with the binary converter.