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Rounds a number down, toward zero.



Number     is any real number that you want rounded down.

Num_digits     is the number of digits to which you want to round the number.


  • ROUNDDOWN behaves like ROUND, except that it always rounds a number down.

  • If num_digits is greater than 0 (zero), then number is rounded down to the specified number of decimal places.

  • If num_digits is 0, then number is rounded down to the nearest integer.

  • If num_digits is less than 0, then number is rounded down to the left of the decimal point.



Description (Result)

=ROUNDDOWN(3.2, 0)

Rounds 3.2 down to zero decimal places (3)


Rounds 76.9 down to zero decimal places (76)

=ROUNDDOWN(3.14159, 3)

Rounds 3.14159 down to three decimal places (3.141)

=ROUNDDOWN(-3.14159, 1)

Rounds -3.14159 down to one decimal place (-3.1)

=ROUNDDOWN(31415.92654, -2)

Rounds 31415.92654 down to 2 decimal places to the left of the decimal (31400)

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