Number Base Converter
Convert between binary, decimal, hexadecimal, and octal.
From
To
Result
101010
Number base conversion translates a number from one numeral system to another. Computers use binary (base 2), octal (base 8), decimal (base 10), and hexadecimal (base 16). Programmers and developers often need to convert between these for debugging, bitwise operations, color codes, and protocols.
Our converter supports binary, decimal, hexadecimal, and octal. Enter a number in any base and see it converted to the others instantly.
All conversions run locally in your browser. We do not store, log, or transmit any numbers you enter.
Converting number bases is simple:
- Select Base: Choose the source base (From) and target base (To)
- Enter Number: Type the number in the source base
- Get Result: All bases update automatically as you type
Invalid digits for the selected base are ignored. Results update in real time.
Programming
Debug bit flags, convert color codes (hex), work with memory addresses, or understand binary data.
Web Development
CSS colors (hex), JavaScript numbers, or encoding schemes.
Digital Electronics
Binary logic, hardware registers, or protocol specifications.
Computer Science Education
Learn how different number bases work and practice conversions.
Privacy Protection: All conversions run entirely in your browser. We do not store, log, or transmit any numbers.
No Data Storage: We do not save your conversion history. Each session is independent.
Precision: Very large numbers may be truncated in some browsers. For critical applications, verify with other tools.