Build the payload
The facility code occupies the first 8 payload bits and the card number occupies the next 16 bits.
payload = facility × 65,536 + card
Standard 26-bit H10301
Wiegand Calculator
Encode facility codes and card numbers, decode raw card data, and verify parity in one step.
Input
26 bits
Card details
Result
Parity valid
Decoded card data
Facility code
42
Card number
69
Even parity
1
Odd parity
0
Raw binary 26 bits, parity included
10010101000000000010001010
Raw hex
254008A
Raw decimal
39059594
Payload binary 24 bits, parity excluded
001010100000000001000101
Payload hex
2A0045
Payload decimal
2752581
Bit layout
26 bits
26-bit field map
Even parity
1
Bit 1
Facility code
00101010
Bits 2–9
Card number
0000000001000101
Bits 10–25
Odd parity
0
Bit 26
The leading bit makes bits 1–13 even. The trailing bit makes bits 14–26 odd.
How it works
Calculate standard 26-bit Wiegand data
H10301 combines an 8-bit facility code and a 16-bit card number, then adds two parity bits around the 24-bit payload.
Add parity
The leading bit provides even parity for the first half. The trailing bit provides odd parity for the second half.
P + 8 facility bits + 16 card bits + P
Use the correct value
Raw values include both parity bits. Payload values contain only the facility code and card number fields.
raw ≠ payload
Reference
H10301 input ranges
| Field | Bits | Accepted range | Output position |
|---|---|---|---|
| Even parity | 1 | Calculated | Bit 1 |
| Facility code | 8 | 0–255 | Bits 2–9 |
| Card number | 16 | 0–65,535 | Bits 10–25 |
| Odd parity | 1 | Calculated | Bit 26 |