Decimal ↔ HEX ↔ BCD Converter
Convert values between decimal, hexadecimal, and Binary Coded Decimal (BCD) formats. BCD is commonly used in payment systems for encoding numeric data.
About BCD Encoding
Binary Coded Decimal (BCD) is a way of encoding decimal numbers where each decimal digit is represented by a fixed number of binary digits (bits). In standard BCD, each decimal digit (0-9) is represented by its 4-bit binary equivalent.
Types of BCD
- Unpacked BCD: Each decimal digit is stored in one byte, with the lower 4 bits representing the digit and the upper 4 bits set to 0.
- Packed BCD: Each byte stores two decimal digits, with the upper 4 bits representing one digit and the lower 4 bits representing another.
BCD in Payment Systems
BCD is widely used in payment systems because:
- It allows for efficient storage of numeric data
- It simplifies conversion between binary and human-readable formats
- It's used in EMV, ISO 8583, and other payment protocols
- It preserves the exact decimal precision needed for financial calculations
EMV Decoder tools perform all calculations client-side for maximum security.
No sensitive data is ever transmitted to our servers.