FLOOR Function in Excel: Round Down to a Multiple (Classic)

⏱ 1 min readUpdated 28 September 2026

MathLevel: IntermediateAvailable in: Excel 2007+

In this article
  1. Syntax
  2. Examples
  3. Example 1
  4. Related functions

FLOOR rounds down to a multiple — full boxes you can ship, 15-minute billing blocks.

Syntax

=FLOOR(number, significance)
Argument What it means
significance The multiple.

Examples

Example 1

=FLOOR(A2, TIME(0,15,0))

Round a clock-in time down to the quarter hour.

FLOOR.MATH · CEILING · INT

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