Checksum Digit Generator
Generate checksum digits using digit sum, Luhn algorithm, and weighted sum methods for any number.
Digit Sum Checksum (mod 10)
5.00
Sum of digits: 45
Luhn Check Digit
3.00
Weighted Checksum
5.00
Weighted sum: 285
Complete Number with Check Digit
1234567893
Original number + Luhn check digit
Original Number
123456789