Base 9 Calculator
To convert from base-10 to base-9, divide the number by 9 and keep track of the remainders. For instance, converting 81 results in 100 in base-9. Use the Base 9 Calculator for quick results.
The Base 9 Calculator converts numbers between base-9 and base-10, providing easy conversions for complex base calculations. It is useful for mathematical computations involving different number systems.

Formula:
Where:
Variable | Meaning |
---|---|
Each digit in the number | |
Position of the digit (starting from 0 at right) | |
The base (9 in this case) |
Example Calculation:
To convert a base-10 number to base-9, let’s take the example of converting 81 from base-10 to base-9.
- Divide 81 by 9:
- remainder
- Divide the result (9) by 9:
- remainder
- Divide the result (1) by 9:
- remainder
So, 81 in base-9 is 100.