The Microsoft Excel ATANH function returns the inverse hyperbolic tangent of a number. The ATANH function is a built-in function in Excel that is categorized as a Math/Trig Function. It can be used as a worksheet function (WS) in Excel. As a worksheet function, the ATANH function can be entered as part of a formula in a cell of a worksheet.

**Syntax**: =ATANH(number)

The ATANH function syntax has the following arguments:

**number**: The number you want the inverse hyperbolic tangent of.

**Example**: Let’s look at some Excel ATANH function examples and explore how to use the ATANH function as a worksheet function in Microsoft Excel:

**Syntax**: =ATANH(G36)

**Result**:

Based on the Excel spreadsheet above, the following ATANH examples would return:

**Syntax**: =ATANH(G37)

**Result**: -0.775298706

**Syntax**: =ATANH(G38)

**Result**: -0.549306144

**Syntax**: =ATANH(G39)

**Result**: 0

**Syntax**: =ATANH(G40)

**Result**: 0.549306144

**Syntax**: =ATANH(G41)

**Result**: 0.775298706

**Syntax**: =ATANH(G42)

**Result**: #NUM!