The ROUND() function takes a number and returns the nearest integer to the argument. Numbers that are exactly half way (ie, end in “.5”) round away from zero.
ROUND(5.4) === ROUND(5.1) === ROUND(4.5) === 5 ROUND(-5.5) === ROUND(-5.9) === ROUND(-6.3) === -6
The ROUND() function (v11.0+) takes a second optional parameter to indicate the number of decimal digits to round to:
ROUND(5.6789,2) === 5.68 ROUND(-5.6789,2) === -5.68