Octal to Decimal Converter
Convert Octal (Base 8) to Decimal (Base 10) instantly. Enter any Octal value to get the Decimal equivalent.
Octal to Decimal
6 units
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Common Numbers Conversions
Octal to Decimal Conversion Table
| Octal (Base 8) | Decimal (Base 10) |
|---|---|
| 0 | 0 |
| 1 | 1 |
| 2 | 2 |
| 3 | 3 |
| 4 | 4 |
| 5 | 5 |
| 10 | 8 |
| 12 | 10 |
| 17 | 15 |
| 20 | 16 |
| 40 | 32 |
| 100 | 64 |
| 144 | 100 |
| 200 | 128 |
| 377 | 255 |
| 1000 | 512 |
| 1750 | 1000 |
| 2000 | 1024 |
| 7777 | 4095 |
| 177777 | 65535 |
How to Convert Octal to Decimal
To convert from Octal (base 8) to Decimal (base 10), express the integer value using the digits available in the target base. For example, decimal 255 is 377 in Octal and 255 in Decimal.
Use the converter above — type any Octal value to instantly see its Decimal equivalent. Convert Decimal → Octal instead →
Frequently Asked Questions
Q
How do I convert Octal to Decimal?
Interpret the Octal (base 8) number as an integer, then express it in base 10. For example, the Octal value FF equals 255 in decimal, which is 255 in Decimal.
Q
What is 255 in Decimal?
255 in decimal = 255 in Decimal.
About These Units
Octal
Base 8
A positional numeral system with base 8. Uses 8 distinct digits (0–7).
Decimal
Base 10
A positional numeral system with base 10. Uses 10 distinct digits (0–9).