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Octal Calculator

Enter two octal values in the given input fields and select the operator to perform a mathematical operation using base 8 calculator.

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Octal calculator is an online tool that can be used to add, subtract, multiply, or divide two octal numbers.

What is octal number system?

Octal number system is the base-8 number system, and uses the digits 0 to 7. In octal system, each place is a power of eight. For example:

450 = 4 × 82 + 5 × 81 + 0 × 80

How to add octal numbers?

Octal addition is a bit different from decimal or binary addition. Here is the octal addition table to understand addition of octal numbers.

+

0

1

2

3

4

5

6

7

0

0

1

2

3

4

5

6

7

1

1

2

3

4

5

6

7

10

2

2

3

4

5

6

7

10

11

3

3

4

5

6

7

10

11

12

4

4

5

6

7

10

11

12

13

5

5

6

7

10

11

12

13

14

6

6

7

10

11

12

13

14

15

7

7

10

11

12

13

14

15

16

Follow the below example to add two octal numbers.

Example:

Add (562)8 and (647)8.

Solution:

Step 1: Place one value below the other one.

5 6 2

+ 6 4 7

Step 2: Add each integer using the above table. Carry the values onto next term as we do in general addition.

      1  1 -------> Carry

    5 6 2

+ 6 4 7

----------

  1431

So, (562)8 + (647)8 = (1431)8

Octal addition calculator can save a lot of time and effort you put in octal calculations.

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