Syntax: ABS(X)
X = a numeric value or cell reference containing a numeric value
ABS returns the absolute (positive) value of X.
Examples:
ABS(5) = 5
ABS(-5) = 5
ABS(52) = 52
ABS(C15) = 10, where C15 = -10
SQRT(ABS(D4)) = 10, where D4 = -100
Excel function: ABS