Baud Rate Calculator
Calculate baud rate for serial communication and data transmission systems
Calculate Baud Rate
Number of bits transmitted per second
Number of bits in each symbol (typically 1-8)
Baud Rate Results
Formula used: Baud Rate = Bit Rate ÷ Bits per Baud
Example Calculation
ASCII Character Transmission
Scenario: Transmitting ASCII characters via serial port
Bit rate: 9,600 bits/s
Bits per character: 8 bits (1 byte)
Protocol: Each character = 1 baud
Calculation
Baud Rate = Bit Rate ÷ Bits per Baud
Baud Rate = 9,600 bits/s ÷ 8 bits
Baud Rate = 1,200 bauds/s
Transmission Speed = 1,200 characters/s
Common Baud Rates
Baud Rate Tips
Both transmitting and receiving devices must use the same baud rate
9,600 baud is the most commonly used standard rate
Higher baud rates allow faster data transmission but may be less reliable over long distances
1 baud = 1 hertz (symbol rate equals frequency)
Understanding Baud Rate
What is Baud Rate?
Baud rate measures the number of signal units (symbols) transmitted per second in a communication channel. It determines the speed of data transmission in serial communication systems like RS-232, UART, and modems.
Why is Baud Rate Important?
- •Determines data transmission speed in serial communication
- •Essential for proper communication between devices
- •Affects bandwidth requirements for signal transmission
- •Critical for microcontroller and embedded system design
Calculation Methods
Simple Ratio
Baud Rate = Bit Rate ÷ Bits per Baud
ASK Bandwidth
Baud Rate = BASK ÷ (1 + mf)
FSK Bandwidth
Baud Rate = (BFSK - 2×ΔF) ÷ (1 + mf)
Frequency
1 baud = 1 hertz
Baud vs Bit Rate
Important distinction: Baud rate and bit rate are not always the same:
- • Baud rate: Number of symbols per second
- • Bit rate: Number of bits per second
- • If each symbol carries 1 bit: baud rate = bit rate
- • If each symbol carries multiple bits: bit rate = baud rate × bits per symbol