Built In Functions
MS Excel has many built in functions, which we can use in our formula. To see all the functions by category, choose Formulas Tab » Insert Function. Then Insert function Dialog appears from which we can choose the function.
Functions by Categories
Let us see some of the built in functions in MS Excel.
Text Functions
LOWER − Converts all characters in a supplied text string to lower case
UPPER − Converts all characters in a supplied text string to upper case
TRIM − Removes duplicate spaces, and spaces at the start and end of a text string
CONCATENATE − Joins together two or more text strings.
LEFT − Returns a specified number of characters from the start of a supplied text string.
MID − Returns a specified number of characters from the middle of a supplied text string
RIGHT − Returns a specified number of characters from the end of a supplied text string.
LEN − Returns the length of a supplied text string
FIND − Returns the position of a supplied character or text string from within a supplied text string (case-sensitive).
Date & Time
DATE − Returns a date, from a user-supplied year, month and day.
TIME − Returns a time, from a user-supplied hour, minute and second.
DATEVALUE − Converts a text string showing a date, to an integer that represents the date in Excel's date-time code.
TIMEVALUE − Converts a text string showing a time, to a decimal that represents the time in Excel.
NOW − Returns the current date & time.
TODAY − Returns today's date.
Statistical
MAX − Returns the largest value from a list of supplied numbers.
MIN − Returns the smallest value from a list of supplied numbers.
AVERAGE − Returns the Average of a list of supplied numbers.
COUNT − Returns the number of numerical values in a supplied set of cells or values.
COUNTIF − Returns the number of cells (of a supplied range), that satisfies a given criteria.
SUM − Returns the sum of a supplied list of numbers
Logical
AND − Tests a number of user-defined conditions and returns TRUE if ALL of the conditions evaluate to TRUE, or FALSE otherwise
OR − Tests a number of user-defined conditions and returns TRUE if ANY of the conditions evaluate to TRUE, or FALSE otherwise.
NOT − Returns a logical value that is the opposite of a user supplied logical value or expression i.e. returns FALSE if the supplied argument is TRUE and returns TRUE if the supplied argument is FAL
Math & Trig
ABS − Returns the absolute value (i.e. the modulus) of a supplied number.
SIGN − Returns the sign (+1, -1 or 0) of a supplied number.
SQRT − Returns the positive square root of a given number.
MOD − Returns the remainder from a division between two supplied numbers.
