UART 8N1 Calculator

Calculate serial transfer time for UART 8N1 quickly using baud rate and payload bytes.

Quick rule

8N1 usually means 10 bits per byte. Time per byte = 10 / baud.

Example

At 115200 baud, one 8N1 byte takes about 86.8 µs. A 64-byte payload takes about 5.56 ms.