Modern certificates often have serial numbers that are long. These are "Big Numbers" and cannot be handled by standard 32-bit or 64-bit calculators.
$hex = "123ABC123" [System.Numerics.BigInteger]::Parse($hex, [System.Globalization.NumberStyles]::HexNumber) Use code with caution. Common Pitfalls to Avoid convert certificate serial number hex to decimal
Run: python hex2dec.py "0E:6B:3A:7F:1D:2C" Modern certificates often have serial numbers that are long
If you have hundreds of certificates, automate the task. convert certificate serial number hex to decimal
Returns: int: Decimal representation """ # Remove common separators and prefixes cleaned = hex_string.replace(':', '').replace(' ', '').lower() if cleaned.startswith('0x'): cleaned = cleaned[2:]