Number Base Converter
Convert between binary, octal, decimal, and hexadecimal
About Number Base Converter
Convert numbers between binary (base 2), octal (base 8), decimal (base 10), and hexadecimal (base 16). See all bases update in real time as you type.
- Converts between binary, octal, decimal, and hexadecimal
- Supports custom bases from 2 to 36
- Handles very large numbers using BigInt
- All base fields update simultaneously as you type
- Shows step-by-step conversion breakdown
Everything runs in your browser — your data never leaves your device.
How to Use Number Base Converter
- Enter a number in any base field
- All other base conversions update automatically
- Supports binary, octal, decimal, and hexadecimal
Frequently Asked Questions
What number bases are supported?
Binary (base 2), octal (base 8), decimal (base 10), hexadecimal (base 16), and any custom base from 2 to 36. All conversions happen instantly as you type.
What is the maximum number size?
The tool handles very large numbers using JavaScript's BigInt support, well beyond standard 32-bit or 64-bit limits. Ideal for working with cryptographic values or large binary strings.
How do I convert binary to hexadecimal?
Enter your binary number in the binary field and the hex equivalent appears instantly. For example, binary 11111111 converts to hex FF (decimal 255).
Why are number bases important in programming?
Binary is how computers store data, hex is a compact way to represent binary (used in colors, memory addresses), and octal appears in Unix file permissions. Understanding base conversions is fundamental to computer science.
