Convertisseur Octal en Décimal
Convertissez les nombres octaux en décimaux.
Valeur décimale
100
Formule
How to Convert Octal to Decimal
Method
Octal (base-8) uses digits 0-7. Each position represents a power of 8.
Decimal = d4×8⁴ + d3×8³ + d2×8² + d1×8¹ + d0×8⁰
For example, octal 144 = 1×64 + 4×8 + 4×1 = 64 + 32 + 4 = 100.
Exemple Résolu
Convert octal 00144 to decimal.
- 010×4096 + 0×512 + 1×64 + 4×8 + 4×1
- 02= 0 + 0 + 64 + 32 + 4
- 03= 100
Questions Fréquentes
What is the octal number system?
Octal (base-8) uses digits 0 through 7. It was historically used in computing because each octal digit represents exactly 3 binary bits.
Where is octal used today?
Octal is used in Unix/Linux file permissions (like chmod 755) and occasionally in programming for representing groups of 3 binary bits.
How do you convert decimal to octal?
Repeatedly divide the decimal number by 8, recording the remainder at each step. Read the remainders from bottom to top.
Apprendre