Convert bauds to bits per second

Online converter

Convert any serial communication speed from / to bauds [Bd] to bits per second [bit/s]. Fill one of the following fields, values will be converted and updated automatically. For more details, check the details explained here.

Communication speed
Speed
bauds [Bd]
Bd
Data bits
Data bits
bits
bits
Parity
Parity
Stop bits
Stop bits
bits
bits

Gross bit rate
Gross
bits/second [bit/s]
bit/s
Usefull bit rate
Usefull
bit/second [bit/s]
bit/s

Explanation

Serial frame with start bit, data, parity and stop bit

A serial frame is composed of the following elements :

Check this page for more details on how a serial frame is built.

In serial frame, one baud is equal to 1 bit/s. The gross rate is equal to the baud rate.

But since a serial frame sends start / parity / stop bits, it decreases the usefull rate of transmission. To get the usefull rate of transmission, we need to calculate the ratio between raw bit rate and net bitrate.

To send n bits of data (usefull bits), we need to send 1 + n + p + s bits. The usefull bitrate is then:

$$ BR_{usefull} = \dfrac{n}{1+n+p+s}\times BR_{gross} $$

and vice-versa:

$$ BR_{gross} = \dfrac{1+n+p+s}{n}\times BR_{usefull} $$

Where:

See also


Last update : 11/13/2022