Enter a Number in Any Base
Type a number into the binary, decimal, hexadecimal, or octal input field. This number base converter tool automatically validates the input for each base and flags invalid digits so you always get accurate conversions.
Binary Converter
Convert numbers between binary (base-2), decimal (base-10), hexadecimal (base-16), and octal (base-8) formats. Enter a value in any base and see the equivalent in all others instantly. Perfect for programmers, students, and digital electronics enthusiasts.
Workspace
Use the tool below. Your inputs stay local when the tool supports browser-only processing.
Binary
Decimal
Hex
Octal
Workflow
How to use the Binary Converter
View the Equivalent Values
See the number converted and displayed in all four number bases simultaneously. The converter updates all fields in real time as you type in any single base, giving you instant cross-base results for programming and computer science tasks.
Copy Any Base Value
Click the copy icon next to any converted value to copy it to your clipboard. When you use this number base converter, you get accurate conversions for programming, digital electronics, and computer science applications without any manual calculation.
Binary Converter — Frequently Asked Questions
How do I use a number base converter for programming?
A number base converter helps programmers quickly translate between number bases when working with memory addresses, color codes, bitmasks, and low-level data manipulation. Simply type your value in any base and the tool shows you the equivalent in binary, decimal, hex, and octal simultaneously.
What are binary, decimal, hexadecimal, and octal used for in computing?
Binary (base-2) is the fundamental language of computers representing on/off states. Decimal (base-10) is for everyday human use. Hexadecimal (base-16) is used in programming for memory addresses and color codes. Octal (base-8) appears in Unix file permissions and some legacy systems — all of which a number base converter handles instantly.