# UART: How to calculate bit time?

Reading this application note about timing for enable RS485 transeiver, I read that I need to ensure a time called "bit time", which depends on the baud rate, for example the document shows an example:

using 230400 baud rate the bit rate is 4.34 µs, but the document doesn't specify how to calculate this value

How can I calculate it?

• Often called 'bit period'. Dec 17, 2021 at 17:48
• 1/baud rate.... Dec 17, 2021 at 19:43

using 230400 baud rate the $$\\color{red}{\text{bit rate}}\$$ is 4.34 µs, but the document doesn't specify how to calculate this value. How can I calculate it?
I'm assuming that you don't actually mean $$\\color{red}{\text{bit rate}}\$$ - you mean the time duration for each bit.