Excel ROUNDDOWN function

Always rounds down, toward zero: it cuts off the extra decimals. In Spanish Excel it is called REDONDEAR.MENOS.

Syntax

English Excel

=ROUNDDOWN(number, num_digits)

Spanish Excel (Mexico)

=REDONDEAR.MENOS(número, núm_decimales)

Spanish Excel (Spain, Latin America)

=REDONDEAR.MENOS(número; núm_decimales)

ArgumentWhat it is
numberThe number to round.
num_digitsDigits to keep.

Example

ROUNDUP always rounds up and ROUNDDOWN always rounds down, whatever the decimal. With 0 digits they count whole boxes, trips or payments.

=ROUNDDOWN(B2/C2,0)

Common mistake

With negatives it moves toward zero (-2.7 gives -2), unlike INT (-2.7 gives -3).

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Practice ROUNDDOWN

Type the formula in the sheet and check it instantly. Spanish or English function names both work. See all lessons

ROUNDUP and ROUNDDOWN

ROUNDUP always rounds up and ROUNDDOWN always rounds down, whatever the decimal. With 0 digits they count whole boxes, trips or payments.

Step 1/2

In D2, calculate how many boxes all the pieces need (a half-full box still counts).

D2
ABCDEF
1ProductPiecesPer boxBoxes neededFull boxes
2Screws25040
3Nuts30050
4Washers12530
5Nails999100
6Anchors6412
7

Tip: while typing, click a cell or drag across several to insert their reference.

Frequently asked questions

What is ROUNDDOWN called in Spanish?
In Spanish Excel it is REDONDEAR.MENOS. The formula =ROUNDDOWN(B2/C2,0) is written =REDONDEAR.MENOS(B2/C2;0) (or with commas in Mexico).
Why does ROUNDDOWN use semicolons in some Excel versions?
It depends on regional settings. Where the comma is the decimal mark (Spain, much of South America), Excel separates arguments with semicolons. English Excel and Mexican Spanish Excel use commas.
What is the most common ROUNDDOWN mistake?
With negatives it moves toward zero (-2.7 gives -2), unlike INT (-2.7 gives -3).