How to type the summation symbol (∑) on a keyboard (Windows, Mac, Word, Excel + more)

The summation symbol (∑) means “sum of” in math. You’ll see it in statistics, engineering, school math, and formulas (especially when adding many values at once).

People often search “summation symbol” because they want the ∑ operator, not just the Greek letter sigma (Σ). This guide shows the fastest, beginner-friendly ways to type ∑ everywhere.

If you want something quick, below is the tool to help you copy and paste this symbol to wherever you want:

Copy the Summation Symbol (∑)

Click a symbol to copy it. Then paste anywhere.

Core

Related math symbols

Comparison (common)

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