Number Base Converter
Convert numbers between binary (base 2), octal (base 8), decimal (base 10), and hexadecimal (base 16) instantly. Edit any field to see all other representations update in real time, with arbitrary-precision support for large numbers.
Secure & Private Client-Side
This tool runs entirely in your browser. No data is sent to any server, ensuring your information remains private and secure.
About Number Base Converter
Convert numbers between binary (base 2), octal (base 8), decimal (base 10), and hexadecimal (base 16) instantly. Edit any field to see all other representations update in real time, with arbitrary-precision support for large numbers.
Frequently Asked Questions
What number bases are supported? expand_more
The [Number Base Converter](/tools/number-base-converter/) supports binary (base 2), octal (base 8), decimal (base 10), and hexadecimal (base 16), the most common bases in computing.
How do I convert binary to decimal? expand_more
Type or paste your binary number (only 0s and 1s) into the Binary field. The decimal value and all other bases update instantly. No button click required.
Does it handle very large numbers? expand_more
Yes! The converter uses arbitrary-precision integers (BigInt), so even numbers far beyond the normal 64-bit range convert accurately without rounding errors.
Why is hexadecimal used in programming? expand_more
Hexadecimal is compact and maps neatly to binary (each hex digit equals exactly 4 bits). It is widely used for memory addresses, color codes, and byte values.
Is my data sent to a server? expand_more
No! All conversions happen entirely in your browser. Your numbers never leave your device.
Common Use Cases
- Low-Level Debugging: Read hex memory addresses, register values, and byte dumps as decimal or binary.
- Bitmasks & Flags: Inspect binary representations when working with permission bits and feature flags.
- Color & Hardware: Convert hexadecimal color codes or sensor readings into decimal values.
- Learning CS: Understand how the same number looks across binary, octal, decimal, and hex.