Binary / Hex / Octal / Decimal Calculator
Perform addition, subtraction, multiplication, and base conversions across Binary (Base 2), Octal (Base 8), Decimal (Base 10), and Hexadecimal (Base 16).
100% Client-Side
Binary
Decimal
Hexadecimal
Octal
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All calculations run directly in your local browser memory. Zero data is ever transmitted, logged, or stored on remote servers.