Convert between 500+ units across multiple categories. Fast, accurate conversions for length, weight, temperature, volume and more.
Select a category (length, weight, temperature, etc.), enter a value, and choose the source and target units. The converter calculates the result instantly using precise conversion factors. Click the swap button (⇄) to reverse the units. Quick conversions provide common unit pairs for fast reference.
Each unit category has a base unit. All units in a category are converted to the base, then to the target unit. For temperature, specific formulas (Celsius↔Fahrenheit↔Kelvin) are used. Everything runs locally in your browser.
Select a measurement category by clicking one of the tabs: Length, Weight, Temperature, Volume, Area, or Speed. Enter the numeric value you want to convert in the field provided. Choose the source unit from the "From" dropdown and the target unit from the "To" dropdown. The result updates instantly, displaying the converted value alongside the conversion formula for reference. Use the swap button (⇄) to quickly reverse the conversion direction. Quick conversion presets appear below the main result for commonly used unit pairs in the selected category.
Yes, this tool is completely free to use. No registration, no login, and no subscription required.
Yes. All processing happens entirely in your browser — your input never leaves your device and is not sent to any server.
Yes. The tool is fully responsive and works on smartphones, tablets, and desktop computers.
The tool uses standard conversion factors. Results are accurate to 6 decimal places for most conversions.
Yes. The converter supports both imperial and metric units across all categories. For length, you can switch between inches, feet, yards, miles and millimeters, centimeters, meters, kilometers. The weight category handles pounds, ounces alongside kilograms and grams.
No. All our tools are free to use and work directly in your browser without registration or sign-in. Just open the page and start using the tool.
Yes. The tool runs entirely in your browser and does not send your input to any server. None of your text, files, or personal data are uploaded, logged, or shared with third parties, so you can use it for sensitive work without any privacy concerns.
No. The tool is a self-contained web page that runs in your browser. There is nothing to download, install, or configure - just open the URL and the tool is ready to use on any modern browser.
By default, the tool does not persist data across sessions, so refreshing or closing the tab will clear your input. This is intentional for privacy. If you need to keep your result, copy or download it before leaving the page.