Even Parity Bit Calculator

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Generate: compute the parity bit to attach to your data. Check: verify a message you already received includes a valid parity bit.
Enter only 0s and 1s. In Generate mode this is the raw data before the parity bit is added. In Check mode this is the full received message including the parity bit.
Where to insert the parity bit in the encoded message. Both sender and receiver must agree on this convention.
Parity bit
0

The even parity bit value (0 or 1)

Encoded message10101100
Number of 1-bits in data4 (even)

Even parity bit is 0 - encoded message is 10101100.

  • The data word "1010110" contains 4 (even) of 1-bits.
  • A parity bit of 0 makes the total count of 1-bits across the entire encoded message even.
  • The parity bit is placed at the end (LSB side) of the message by convention.
  • Both the transmitter and receiver must agree on even parity and bit position for error detection to work.

Next stepSend the encoded message. The receiver will count all 1-bits: if the total is odd, a single-bit error has occurred and retransmission should be requested.

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