Unit Converter | Classic Online Tool

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Choose unit type, enter a value, and see instant results:

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What is a Unit Converter?

A unit converter lets you convert values between metric and imperial systems for common measurements like length, weight, temperature, and area. Perfect for travel, recipes, science, homework, and more.

How to Use

Choose what you want to convert (Length, Weight, Temperature, or Area).
Enter a value and select the units to convert from and to.
Your answer appears instantly below.

All calculations are done in your browser—your data never leaves your device.

FAQ

Does it work offline? Yes, 100% in your browser.
Are conversions exact? As accurate as JavaScript math allows for standard units.
Is my data private? Completely—no tracking or storage.
Can I use on mobile? Yes, it's mobile-friendly.

What Units Does This Cover?

Length: meter, kilometer, mile, yard, foot, inch, centimeter, millimeter
Weight: kilogram, gram, pound, ounce, stone
Temperature: Celsius, Fahrenheit, Kelvin
Area: square meter, square kilometer, square foot, square yard, acre, hectare

Perfect for daily use, travel, study, and work!