# Documentation/Calc Functions/DEC2OCT

DEC2OCT

## Summary:

Converts a decimal number (base-10) to its octal (base-8) equivalent. The input decimal number must be in the range -229d < 229.

## Syntax:

DEC2OCT(Number[; Places])

## Returns:

Returns a text string comprising up to 10 octal characters (0…7), which is the octal number in two’s complement form that corresponds to the specified decimal number.

## Arguments:

Number is a string or a number, or a reference to a cell containing one of those types, which gives the decimal number that is to be converted to octal. The decimal number should be an integer that is not less than -229 or greater than 229-1.

Places is an integer in the range 1 to 10, or a reference to a cell containing that value, which is the number of characters that should be returned for a positive Number. Places is ignored for negative values of Number, when DEC2OCT always returns 10 characters. The default for positive values of Number is for the returned string to occupy as many characters as necessary to accommodate the octal representation, but you can set the value of Places to add leading zeroes where necessary.

• If Number is non-numeric (including an empty string), then DEC2OCT reports a #VALUE! error.
• If Number is a non-integer value, then DEC2OCT truncates it to an integer.
• If, after any truncation, Number is outside the range specified, DEC2OCT reports an invalid argument error (Err:502).
• If Number is a reference to an empty cell, DEC2OCT returns 0 (possibly with leading zeroes, depending on the value of Places).
• If Places is non-numeric, then DEC2OCT reports an invalid argument error (Err:502).
• If Places is a non-integer value, then DEC2OCT truncates it to an integer.
• If, after any truncation, Places is less than 1 or greater than 10, DEC2OCT reports an invalid argument error (Err:502).
• If Number is positive and Places is less than the minimum number of characters required to accommodate the octal representation of Number, then DEC2OCT reports an invalid argument error (Err:502).

The following Wikipedia pages provide useful background information that is relevant to this function:

## Examples:

Formula Description Returns
=DEC2OCT(63) Here the function converts the decimal value of 63 (passed as a number) to its octal equivalent of 77. 77
=DEC2OCT("63"; 4) Here the function again converts the decimal value of 63 (passed as a string) to its octal equivalent of 77 but also adds two leading zeroes. 0077
=DEC2OCT(D1; D2) where cells D1 and D2 contain the numbers 63 and 6 respectively. Here the function again converts the decimal value of 63 (passed via a cell reference) to its octal equivalent of 77 but also adds four leading zeroes. 000077
=DEC2OCT(-POWER(2; 29)) Here the function converts the minimum allowed decimal value of -229 to its octal equivalent of 4000000000. 4000000000
=DEC2OCT(-1) Here the function converts the decimal value of -1 to its octal equivalent of 7777777777. 7777777777
=DEC2OCT(POWER(2; 29)-1) Here the function converts the maximum allowed decimal value of 229-1 to its octal equivalent of 3777777777. 3777777777

DEC2OCT