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Understanding Binary Data Transmission

See how text is encoded to binary bytes for transmission across serial lines, Bluetooth, and radio.

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Separate bytes by:
Text input
Binary output
01001000 01100101 01101100 01101100 01101111
5 characters5 bytes40 bits

Data Comms tips

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Serial communication (UART) sends data bit by bit. Text must first be converted to bytes, then transmitted as binary pulses β€” this tool shows the bytes.

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Arduino and microcontrollers communicate over serial in ASCII. "Hello " = 48 65 6C 6C 6F 0A in hex = 01001000 01100101 ... in binary.

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The newline grouping mode shows each character on its own line β€” useful for debugging character-by-character data streams.

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Copy the binary output in newline mode and paste it into your documentation or debugging notes to record exact byte sequences.

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Frequently Asked Questions