TREND Function in Excel: Extend a Straight-Line Trend

⏱ 1 min readUpdated 28 September 2026

StatisticsLevel: ExpertAvailable in: Excel 2007+

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

TREND fits a straight line and returns values on it, for existing points or new ones. In Excel 365 it spills several forecasts at once.

Syntax

=TREND(known_ys, [known_xs], [new_xs], [const])
Argument What it means
new_xs The x-values to predict for.

Examples

Example 1

=TREND(C2:C25, A2:A25, A26:A31)

Next six months on the same trend.

FORECAST.LINEAR · GROWTH · SLOPE

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