Convertisseur Octal

Convertissez les nombres entre systèmes octal et décimal.

Valeur décimale

493

Voir la formule →

Formule

Octal to Decimal Converter

How It Works

Octal (base-8) uses digits 0-7. Each position represents a power of 8:

  • Digit 0: 8^0 = 1
  • Digit 1: 8^1 = 8
  • Digit 2: 8^2 = 64
  • Digit 3: 8^3 = 512
  • Digit 4: 8^4 = 4096
  • Digit 5: 8^5 = 32768

    • Multiply each digit by its place value and sum all the results.

    Exemple Résolu

    Convert octal 755 to decimal.

    1. 017×64 + 5×8 + 5×1
    2. 02= 448 + 40 + 5
    3. 03= 493 in decimal

    Questions Fréquentes

    What is octal?

    Octal is a base-8 number system that uses digits 0-7. It is commonly used in Unix/Linux file permissions (e.g., chmod 755).

    Where is octal used?

    Octal is most commonly used in Unix/Linux file permissions. For example, 755 means owner has read/write/execute, group and others have read/execute.

    Apprendre

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