Binary Converter
Free online binary converter. Convert text to binary (0s and 1s) or decode binary back to readable text. Supports UTF-8, with optional space separators for readability.
How to Use Binary Converter
Enter Your Data
Type or paste text into the input panel. You can enter regular text to convert to binary, or a binary string to convert back to text.
Choose Direction
Click "Text to Binary" to get the 8-bit binary representation of each character, or "Binary to Text" to decode a binary string.
Copy and Use
The result appears on the right. You can choose spaced format (with separators) or continuous format.
Examples
Plain Text
HelloBinary
01001000 01100101 01101100 01101100 01101111Frequently Asked Questions
How does text-to-binary conversion work?
Each character is converted to its numeric code point (usually via UTF-8 or ASCII), then that number is expressed as an 8-bit binary string (a sequence of 0s and 1s). For example, "A" has ASCII code 65, which in binary is 01000001.
What's the difference between binary and hex?
Binary uses base 2 (0s and 1s), hex uses base 16 (0-9, A-F). Binary is the fundamental language of computers, while hex is a more compact human-readable representation. One hex digit represents exactly 4 binary digits (a nibble), so two hex digits = 8 bits = 1 byte.
Can I convert binary back to the original text?
Yes, as long as the binary was encoded with a consistent scheme (8 bits per character). The decoder expects 8-bit groups separated by spaces or as a continuous string. It uses UTF-8 decoding, so it handles ASCII and multi-byte characters correctly.
Binary Encoding in Practice
Binary is the native language of computers — every piece of text, every image, every program ultimately reduces to a sequence of 0s and 1s. Understanding how text maps to binary helps you grasp encoding fundamentals, debug low-level issues, and appreciate how character encodings like ASCII and UTF-8 work.
When Binary Conversion Is Useful
- Learning how computers represent text at the bit level
- Teaching computer science concepts (binary, bits, bytes)
- Debugging bit-level operations and bitmasks
- Working with hardware protocols that use binary data
- Creating steganography or encoding puzzles