# The Excel ASINH Function

Inverse Hyperbolic Sine

The asinh function returns the inverse hyperbolic sine. Therefore:

ASINH( SINH( z ) ) = z

The equation used to calculate the inverse hyperbolic sine is:

Further information on the inverse hyperbolic functions can be found on Wikipedia

## Function Description

The Excel Asinh function calculates the inverse hyperbolic sine of a supplied number.

The syntax of the function is:

ASINH( number )

Where the number argument is the real number that you want to calculate the inverse hyperbolic sine of.

## Excel Asinh Function Examples

The following spreadsheet shows the Excel Asinh Function, used to calculate the inverse hyperbolic sine of three different values:

Formulas:
A B
1 number ASINH
2 0 =ASINH( A2 )
3 -0.5 =ASINH( A3 )
4 2 =ASINH( A4 )
Results:
A B
1 number ASINH
2 1 0
3 -0.5 -0.481211825
4 2 1.443635475

For further details and examples of the Excel Asinh function, see the Microsoft Office website.

## Asinh Function Error

If you get an error from the Excel Asinh Function, this is likely to be the #VALUE! error:

Common Error
 #VALUE! - Occurs if the supplied number argument is not recognized as a numeric value.