Number Base Converter - Binary, Decimal, Hex, Octal
Convert numbers between binary, decimal, hexadecimal, and octal bases. Free online number base converter.
How This Tool Works
This tool converts numbers between different number systems (bases). It supports binary (base 2), octal (base 8), decimal (base 10), and hexadecimal (base 16). Simply enter a number in any base and get instant conversions to all other bases. This is essential for programming, computer science, and digital electronics.
Why Use This Tool
- ✓Convert between 4 number bases
- ✓Instant conversion to all bases
- ✓Perfect for programming
- ✓Essential for computer science
- ✓Useful for digital electronics
- ✓No manual calculation needed
Frequently Asked Questions
What are number bases?
Number bases (or radixes) are different ways to represent numbers. Binary uses 2 digits (0-1), octal uses 8 (0-7), decimal uses 10 (0-9), and hexadecimal uses 16 (0-9, A-F).
Why use different number bases?
Different bases are useful in different contexts. Binary is fundamental to computers, hexadecimal is compact for representing binary data, octal was historically used in computing, and decimal is what humans naturally use.
What is hexadecimal?
Hexadecimal (hex) is base 16, using digits 0-9 and letters A-F. It's commonly used in programming for colors (#FF0000), memory addresses, and representing binary data compactly.
How do I enter hexadecimal numbers?
Just enter the hex digits without any prefix. For example, enter "FF" for 255 in decimal. The tool will automatically convert it.
What's the maximum number I can convert?
The tool can handle numbers up to JavaScript's safe integer limit (2^53 - 1), which is 9,007,199,254,740,991 in decimal.