Serial Baud Rate Calculator

Work out serial-port timing from a baud rate and UART frame configuration — bit period, frame length, per-byte transfer time, characters per second, effective data throughput, and the total wall-clock time to send a block of bytes. Includes a reference table of standard baud rates (300 to 921600). Handy for embedded and UART work. Pure arithmetic, in your browser.

Baud rate

Data bits

Parity

Stop bits

Transfer size (bytes, optional)

Compute the total time to push this many bytes over the line at the configured frame.

Standard baud rates (at the current frame config)

Baud	Bit period	Frame	Byte time	Bytes/s