Free & Instant
Binary Converter
Convert between binary, decimal, and text instantly — perfect for programmers and students.
Binary Converter
Choose a conversion mode and enter your value.
Text ⇄ Binary
Decimal ⇄ Binary
What Is Binary?
Binary is a base-2 number system that computers use internally, made up of only 0s and 1s. Every letter, number, and symbol you see on a screen is ultimately represented as binary code at the hardware level.
Binary Reference Table
| Decimal | Binary |
|---|---|
| 0 | 0000 |
| 5 | 0101 |
| 10 | 1010 |
| 15 | 1111 |
Frequently Asked Questions
How does text convert to binary?+
Each character is converted to its ASCII/Unicode decimal value, then that number is converted to an 8-bit binary representation.
Does this support special characters?+
Yes, this converter supports standard Unicode characters including letters, numbers, symbols, and emoji.