Unit Converter — All Categories
Converters
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About This Tool
Free, private, serverless unit converter covering 8 categories: Length, Weight, Temperature, Area, Volume, Speed, Data, and Time. Convert between hundreds of unit pairs instantly. Includes swap, all-conversions view, and real-time updates. No data leaves your browser — 100% client-side.
How to Use
- Select a category (Length, Weight, Temperature, Area, Volume, Speed, Data, Time).
- Choose the source unit and target unit from the dropdowns.
- Enter a value to convert.
- See the result instantly update in real time.
- Use the swap button to reverse source and target units.
- Click Show All to see the value converted to all units in the category.
Frequently Asked Questions
What categories are supported?
Eight categories: Length (mm to miles), Weight (mg to tons), Temperature (°C, °F, K), Area (sq mm to sq km), Volume (mL to gallons), Speed (m/s to mph), Data (bytes to TB), and Time (ms to years).
Does it handle temperature correctly?
Yes. Temperature conversions use proper formulas (not simple multiplication), correctly handling Celsius, Fahrenheit, and Kelvin conversions including their different zero points.
What are the use cases?
Engineering calculations, cooking recipe conversions, academic homework, travel distance and weight conversions, data storage planning, and quick everyday unit lookups.
Can I see all conversions at once?
Yes. Click "Show All Conversions" to see the input value converted to every available unit in the selected category at once, great for comparison.
Guides & Tutorials
In-depth guides for every tool. Learn how to process your data privately, for free, right in your browser.
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