Number Base Converter
Convert values between Binary (2), Octal (8), Decimal (10), and Hexadecimal (16) systems instantly.
A number base converter translates integers between any bases from 2 to 36 using JavaScript's parseInt and toString methods. Decimal 255 equals FF in hexadecimal (base 16) and 11111111 in binary (base 2). This tool is essential for programmers working with color codes, memory addresses, or bitwise operations — 65535 is 0xFFFF in hex, the maximum value of a 16-bit unsigned integer.
Number Bases in Computing
For programmers and computer engineers, understanding different numeral systems is essential. While humans primarily use Decimal (Base 10), computers operate on Binary (Base 2), representing the on/off states of transistors. Hexadecimal (Base 16) serves as a human-friendly shorthand for binary, as every four binary bits can be represented by exactly one hex digit (0-F).
Decimal (N) to Base (B): Divide N by B repeatedly and track remainders.Example: 255 in Hex is FF because (15 × 16¹) + (15 × 16⁰). In web development, Hex is the standard for Color Codes. A color like #FF5733 is simply three base-16 numbers representing Red, Green, and Blue intensity. Similarly, IP Addresses and network masks are often calculated by converting between decimal and binary to understand subnetting and routing.
Low-level programming often utilizes these bases for bitwise operations and memory addressing. This tool allows you to swap between decimal and hexadecimal as your primary focus while seeing all common computing bases simultaneously.
Common Base References
| Decimal | Binary | Hexadecimal | Octal |
|---|---|---|---|
| 10 | 1010 | A | 12 |
| 16 | 10000 | 10 | 20 |
| 255 | 11111111 | FF | 377 |
| 256 | 100000000 | 100 | 400 |
| 65,535 | 1111...1111 | FFFF | 177777 |
Frequently Asked Questions
What is 255 in hex?
The decimal number 255 is represented as FF in hexadecimal. It is a common value in RGB color codes.
How do I convert decimal 10 to binary?
Decimal 10 is 1010 in binary. This tool performs the conversion instantly and entirely within your browser.
What is the hex value for 65535?
The number 65,535 converts to FFFF in hexadecimal, representing the maximum value for a 16-bit unsigned integer.
How many binary digits is decimal 256?
Decimal 256 is 100000000 in binary (9 digits) and 100 in hexadecimal.
Is my data sent to a server for conversion?
No. Vietaro is 100% offline and private. All number base conversions happen locally on your device.
What is the formula for Number Base Converter?
The tool uses parseInt(value, fromBase) to convert the input to a decimal, then .toString(toBase) to format it into the target base.