Unit Converter
A single calculator for the everyday unit systems: length, weight/mass, temperature, area, volume, speed and digital data. Pick a category and two units, type a value, and the result appears instantly — including a plain-language “1 m = 100 cm” line. Fully offline.
Frequently asked questions
How is temperature converted?
Temperatures are converted through Celsius as the pivot (°C ↔ °F ↔ K), so the offset is handled correctly, unlike a simple ratio.
Are the data units binary or decimal?
Storage units use binary powers (1 KB = 1024 B), the convention used by operating systems.
Related tools
JSON Formatter
Format, validate and minify JSON in your browser. No data is ever uploaded.
JSON Diff
Compare two JSON documents side by side and see differences instantly.
JWT Decoder
Decode JWT tokens, inspect the header and payload, and verify signatures.
Base64 Encoder/Decoder
Encode text or files to Base64, or decode Base64 back to readable text.