Binary, Hex & Decimal Converter
Convert numbers between binary, octal, decimal, hex and base 36.
| Base | Value |
|---|
Bit view (32-bit)
About the Binary, Hex & Decimal Converter
Enter a value in any base and see it in every other base at once, along with a 32-bit view of the individual bits, how many bits are set, and the matching ASCII character.
Invalid digits for the chosen base are caught immediately rather than quietly producing a wrong answer.
Frequently asked questions
Why does hex use letters?
Base 16 needs sixteen digits, so A to F stand for 10 to 15. Two hex digits describe exactly one byte, which is why it is everywhere in computing.
What is base 36?
Digits 0-9 plus letters A-Z, used for short URL identifiers because it packs a large number into few characters.
Related tools
All Converters →Roman Numeral Converter
Convert numbers to Roman numerals and back, with a breakdown.
Time Zone Converter
See one moment in time across as many cities as you need.
Unix Timestamp Converter
Convert between Unix timestamps and human-readable dates.
CSV to JSON Converter
Convert CSV to JSON and JSON back to CSV, with a live preview.
Number to Words Converter
Write any number in words, including rupees for cheques.