# OCT2BIN function: Description, Usage, Syntax, Examples and Explanation

## What is OCT2BIN function in Excel?

OCT2BIN function is one of Engineering functions in Microsoft Excel that converts an octal number to binary.

## Syntax of OCT2BIN function

OCT2BIN(number, [places])

The OCT2BIN function syntax has the following arguments:

**Number:**The octal number you want to convert. Number may not contain more than 10 characters. The most significant bit of number is the sign bit. The remaining 29 bits are magnitude bits. Negative numbers are represented using two’s-complement notation.**Places (Optional):**The number of characters to use. If places is omitted, OCT2BIN uses the minimum number of characters necessary. Places is useful for padding the return value with leading 0s (zeros).

## OCT2BIN formula explanation

- If number is negative, OCT2BIN ignores places and returns a 10-character binary number.
- If number is negative, it cannot be less than 7777777000, and if number is positive, it cannot be greater than 777.
- If number is not a valid octal number, OCT2BIN returns the #NUM! error value.
- If OCT2BIN requires more than places characters, it returns the #NUM! error value.
- If places is not an integer, it is truncated.
- If places is nonnumeric, OCT2BIN returns the #VALUE! error value.
- If places is negative, OCT2BIN returns the #NUM! error value.

## Example of OCT2BIN function

Steps to follow:

1. Open a new Excel worksheet.

2. Copy data in the following table below and paste it in cell A1

Note: For formulas to show results, select them, press F2 key on your keyboard and then press Enter.

You can adjust the column widths to see all the data, if need be.

Formula |
Description |
Result |

=OCT2BIN(3, 3) | Converts octal 3 to binary with 3 characters | 011 |

=OCT2BIN(7777777000) | Converts octal 7777777000 to binary | 1000000000 |