| ABS | The absolute value, i.e. a number without its sign. |
| ACCRINT* | The accrued interest for a security that pays interest periodically. |
| ACCRINTM* | The accrued interest for a security that pays interest at maturity. |
| ACOS | The arccosine of a number in radians. |
| ACOSH | The inverse hyperbolic cosine of a number. |
| ADDRESS | The cell reference given a row and column number. |
| AMORDEGRC* | The depreciation of an asset over a particular period. |
| AMORLINC* | The depreciation of an asset over a particular period. |
| AND | The logical AND for any number of arguments. |
| AREAS | The number of areas in a cell range or reference. |
| ASC* | The text string converted to single byte characters. |
| ASIN | The arcsine of a number in radians. |
| ASINH | The inverse hyperbolic sine of a number. |
| ATAN | The arctangent of a number in radians. |
| ATAN2 | The arctangent of the specified x and y co-ordinates in radians. |
| ATANH | The inverse hyperbolic tangent of a number. |
| AVEDEV | The average deviation for a list of numbers. |
| AVERAGE | The arithmetic mean of a list or array of numbers. |
| AVERAGEA | The arithmetic mean of a list or array of numbers, including text and logical values. |
