Google Sheets ARRAYFORMULA: Write One Formula Instead of Hundreds
ARRAYFORMULA is one of Google Sheets' most powerful features, allowing a single formula to process entire columns of data automatically.
The Copy-Down Problem
Traditional spreadsheets require copying formulas down hundreds or thousands of rows. This creates maintenance nightmares and performance issues.
ARRAYFORMULA Solution
Multiply entire columns with one formula
=ARRAYFORMULA(A2:A * B2:B)