How it works
Pick a category, choose your "from" and "to" units, and enter a value — the result updates live as you type. Length, weight, volume, and speed conversions work by converting your value to a common base unit (like meters or kilograms) and back out to the target unit. Temperature is handled differently, using the direct Celsius/Fahrenheit/Kelvin formulas, since those scales don't share a simple multiplication factor. Results are shown to six significant figures. Everything runs locally in your browser — no data leaves your device.
Unit Converter
Convert length, weight, temperature, volume, and speed instantly.
FAQ
Why is temperature converted differently from the other categories?
Length, weight, volume, and speed all convert by a simple multiplication factor through a common base unit. Celsius, Fahrenheit, and Kelvin have different zero points, so they need direct formulas instead.
How precise are the conversion results?
Results are shown to six significant figures, which is precise enough for everyday, cooking, DIY, and travel conversions.
Can I convert between categories, like weight to volume?
No — conversions only work within a category since units from different categories (like grams to liters) aren't directly convertible without knowing density.
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