How to Use the Number Base Changer:
Enter a number in any base (binary, octal, decimal, or hexadecimal) and select the source base. Choose your target base and click Convert. The tool will instantly display the number in all supported bases. You can also perform bitwise operations (AND, OR, XOR, NOT) on binary numbers.
Color Conversion
Convert hexadecimal color codes to decimal RGB values and vice versa for web development and design.
Low-Level Programming
Convert between number bases when working with binary data, bit flags, and low-level system programming.
Bit Operations
Perform bitwise operations (AND, OR, XOR, NOT) on binary numbers for flag manipulation and bit masking.
How Do Number Bases Work?
Different number bases represent numbers using different radixes (base values). Binary uses base 2, octal uses base 8, decimal uses base 10, and hexadecimal uses base 16. Each position represents a power of the base.
Binary (Base 2)
Uses only 0 and 1. Each position represents a power of 2. Essential for computer systems and bit operations.
Octal (Base 8)
Uses digits 0-7. Each position represents a power of 8. Less common but useful for Unix file permissions.
Decimal (Base 10)
Uses digits 0-9. The standard number system used in everyday life and most programming languages.
Hexadecimal (Base 16)
Uses digits 0-9 and letters A-F. Each position represents a power of 16. Common in programming for representing binary data compactly.
Using Number Bases in JavaScript:
const decimal = 255;
const hex = decimal.toString(16);
console.log(hex); // 'ff'ff Convert decimal number to hexadecimal
const hex = 'FF';
const decimal = parseInt(hex, 16);
console.log(decimal); // 255255 Convert hexadecimal to decimal
Frequently asked questions
Number bases determine how many unique digits are used. Binary (2), octal (8), decimal (10), and hexadecimal (16) are the most common bases in programming.
Hexadecimal is convenient for representing binary data because each hex digit represents exactly 4 binary bits, making conversion easy.
Yes, the tool supports bitwise operations (AND, OR, XOR, NOT) on binary numbers for flag manipulation and bit masking.
Collect Better Feedback with Userback
This number base converter helps you work with different numeral systems efficiently, but gathering feedback about calculation errors and mathematical issues requires comprehensive context. Userback captures detailed visual feedback when users report calculation errors, conversion problems, or bit operation issues. With automatic screenshot capture, browser information, and input/output context, you get complete visibility into mathematical-related problems. When developers need to report base conversion errors or suggest improvements to number manipulation workflows, Userback enables them to submit detailed feedback that includes all technical context in a single shareable report.