Binary Converter

Computers use binary because digital circuits can reliably distinguish two voltage states, conventionally represented by 0 and 1. Combining those bits lets hardware store and process text, numbers, images, instructions, and other data.

Text-to-binary first encodes characters as bytes using a standard such as UTF-8 or ASCII, then displays each byte in base 2. Binary number conversion treats the input as a mathematical value; for example, 1011 equals decimal 11. Both tools are available on this page.

A bit is one binary digit, either 0 or 1. A byte is a group of eight bits and can represent 256 possible patterns, from 00000000 through 11111111. Text encodings store characters as one or more bytes.

Binary has no fixed character limit. One byte has 256 possible values, while an encoding decides what those values mean. ASCII defines 128 codes; Unicode defines far more characters, and UTF-8 represents them with sequences of one to four bytes.

ASCII covers basic English letters, digits, punctuation, and control codes. UTF-8 preserves those same ASCII byte values while also representing scripts, symbols, and emoji from Unicode, so it is the safer default for modern web content.

Yes. Split the binary value into four-bit groups because each hexadecimal digit represents exactly four bits. For example, 1010 1100 becomes AC in hexadecimal. Enter the number in the Binary Number Converter above for an instant result, or use the dedicated Binary to Hex Converter for the full digit-by-digit breakdown.

Yes. Use the Binary Number Converter above — enter 1011 to get decimal 11 instantly, along with hex and octal. The dedicated Binary to Decimal Converter also shows the full place-value math behind the result.

Use the dedicated decimal-to-binary converter for numeric values. It repeatedly evaluates powers of two to produce a base-2 result; for example, decimal 25 becomes binary 11001.

Endianness is the order in which the bytes of a multi-byte value are stored. Big-endian places the most significant byte first, while little-endian places the least significant byte first. It does not reverse the individual bits shown inside each byte.

In ASCII-compatible UTF-8, 'I Love You' is 01001001 00100000 01001100 01101111 01110110 01100101 00100000 01011001 01101111 01110101. Capitalization matters because uppercase and lowercase letters have different character codes.

Read an 8-bit value from right to left using place values 1, 2, 4, 8, 16, 32, 64, and 128. Add the place values whose bits are 1. For 01000001, 64 + 1 equals decimal 65, which represents uppercase A in ASCII.

As a number, 00000000 equals decimal 0. As an ASCII or UTF-8 byte, it is the NUL control character, not the printable digit 0. The digit 0 has ASCII byte 00110000, so the meaning depends on whether you are reading a number or encoded text.

Those five 8-bit ASCII-compatible bytes decode to lowercase hello. The decimal byte values are 104, 101, 108, 108, and 111. Uppercase Hello starts with 01001000 instead because uppercase H has a different code.

Yes. Leading zeros preserve a fixed byte width without changing the numeric value. For example, 00000001 and 1 both equal decimal 1, but 00000001 clearly shows one complete 8-bit byte, which is useful when decoding text or inspecting data.