Converters
Number Base Converter
Convert numbers between binary, octal, decimal, and hexadecimal. Essential for programming, digital electronics, and computer science.
Result
11111111
Usage notes
- Hexadecimal is commonly used for color codes (#FF5733) and memory addresses.
- Binary is the language of computers — every byte is 8 binary digits.
- Enter whole numbers only. Floating-point conversions are not supported.
Related pages
How to Use This Tool
- 1Enter a number in the input field.
- 2Select the source number base (From) and target base (To).
- 3The converted number appears instantly. Use Swap to reverse the bases.
Frequently Asked Questions
- What is binary?
- Binary (base 2) uses only 0 and 1. It is the fundamental number system used by all computers and digital systems.
- What is hexadecimal?
- Hexadecimal (base 16) uses digits 0-9 and letters A-F. It provides a compact way to represent binary data — each hex digit equals exactly 4 binary digits.
- Can I convert fractional numbers?
- This converter handles whole numbers only. Fractional base conversion requires a different algorithm and is not supported.
- Why is hex used in programming?
- Hexadecimal is compact and maps cleanly to binary (4 bits per digit), making it ideal for representing memory addresses, color codes, and byte values.