Online Text to Binary Code Converter
Use this free online binary converter to turn text or strings into binary code and decode binary back to readable text. It is built for UTF-8, ASCII, and Unicode text encoding tasks.
Working with numeric values instead of text? Use the quick links below for binary to decimal, decimal to binary, and other base conversion tools.
About Binary Encoding
Binary is the fundamental language of computers, using only two digits (0 and 1) to represent all data. Every character, number, image, and program is ultimately stored and processed as binary code.
Encoding Formats
UTF-8 (8-bit)
- • Variable length (1-4 bytes)
- • Supports all Unicode characters
- • Web standard encoding
- • Backward compatible with ASCII
- • Best for: Modern applications
ASCII (8-bit)
- • Fixed 8 bits per character
- • Supports 0-127 characters only
- • A-Z, a-z, 0-9, punctuation
- • Simple and fast
- • Best for: English text only
Unicode (16-bit)
- • Fixed 16 bits per character
- • UTF-16 encoding
- • Supports 65,536 characters
- • Less efficient than UTF-8
- • Best for: Windows internals
Binary Examples
| Character | ASCII (Decimal) | Binary (8-bit) | Hexadecimal |
|---|---|---|---|
| A | 65 | 01000001 | 0x41 |
| a | 97 | 01100001 | 0x61 |
| 0 | 48 | 00110000 | 0x30 |
| ! | 33 | 00100001 | 0x21 |
| Space | 32 | 00100000 | 0x20 |
Common Use Cases
- ✓Programming Education: Learn how computers store data at the bit level
- ✓Data Analysis: Inspect binary data formats and file structures
- ✓Network Protocols: Debug packet data and transmission issues
- ✓Cryptography: Understand encryption at the binary level
- ✓Hardware Development: Work with embedded systems and microcontrollers
- ✓File Formats: Reverse engineer proprietary or binary file formats
Need a Binary Number Converter?
This page works best as a binary code converter for text encoding and decoding. If you are working with numeric values, use the dedicated binary number converter tools for cleaner results.
How Text Becomes Binary
Text encoding plus binary number basics
Text-to-binary conversion first maps each character to a numeric code point, then represents that value as binary. Numeric binary conversion is different: it reads the value directly using powers of two.
Use this page for text encoding and decoding. Use the dedicated number converters when you need pure base-2, base-10, hexadecimal, or octal math.
Bits, Bytes, and Data Units
| Unit | Size | Example |
|---|---|---|
| Bit | 1 bit | 0 or 1 |
| Nibble | 4 bits | 1010 (decimal 10) |
| Byte | 8 bits | 01000001 (letter 'A') |
| Word | 16 bits (2 bytes) | Two characters |
| Double Word | 32 bits (4 bytes) | Integer value |
| Quad Word | 64 bits (8 bytes) | Long integer |
Frequently Asked Questions
Why do computers use binary?
Computers use binary because electronic circuits have two stable states: on (1) and off (0). This makes binary the most reliable and efficient way to represent data electronically. It's much easier to distinguish between two states than multiple voltage levels.
What is the difference between text-to-binary and binary number conversion?
Text-to-binary converts characters into byte values using encodings like UTF-8, ASCII, or UTF-16. Binary number conversion works with mathematical values, such as converting 1011 to decimal 11.
What's the difference between bits and bytes?
A bit is the smallest unit of data (0 or 1). A byte is 8 bits grouped together. Bytes are the standard unit for measuring file sizes and memory. One byte can represent 256 different values (2⁸ = 256).
How many characters can binary represent?
With 8 bits (1 byte), binary can represent 256 different values (2⁸). ASCII uses this to encode 128 characters. UTF-8 can use 1-4 bytes per character, supporting over 1 million characters including all world languages and emojis.
Why is UTF-8 better than ASCII?
UTF-8 supports all Unicode characters (140,000+ including emojis, Chinese, Arabic, etc.) while ASCII only supports 128 characters (English letters, numbers, basic symbols). UTF-8 is also backward compatible with ASCII, meaning ASCII text is valid UTF-8.
Can I convert binary to hexadecimal?
Yes! Binary and hexadecimal (base-16) are closely related. Each hex digit represents exactly 4 bits. For example, binary 1010 1100 = hex AC. Hex is often used as a more compact way to represent binary data.
Can I convert to binary to decimal here?
This tool focuses on text and binary code. For numeric conversion, use the dedicated binary to decimal converter to turn base-2 numbers into decimal values.
Do you have a decimal converter to binary?
Yes. Use the decimal converter to binary when you need to change base-10 numbers into base-2 binary numbers.
What's endianness in binary?
Endianness refers to the order of bytes in memory. Big-endian stores the most significant byte first (like writing numbers left-to-right). Little-endian stores the least significant byte first. This matters when sharing binary data between different systems.
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