What is union formula in Google Sheets?
Union Formula is part of how formulas behave, parse, or display in Google Sheets. It shows up when you build models, debug results, or teach spreadsheet mechanics beyond a single function name.
When to use it
Use this concept when building formulas that must scale, spill correctly, or stay readable for teammates.
When to skip it
Skip advanced mechanics when a single built-in function or pivot already returns the answer with less setup.
Better Sheets resources
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Guides that explain union formula in more depth.
Google Sheets Locales. What are they?
Hello, Better Sheet members and non-Better Sheet members! This tutorial is about every locale listed in Google Sheets. If you live in a country that is not well represented with blog posts or someone makes a blog post about a Google Sheets issue, they create a Google Sheet formula and then you copy and paste it into your sheet and it has the wrong delimiter. How do you resolve that? I'm going to show you how you can fix that and how you can know if there's a problem. Locales. What are the...
Read post →How to create a formula for every row in a column in a Google Spreadsheet?
3 possible ways to create a formula for every row in a column in a Google Spreadsheet. And two bonus ways to make it look nicer. - Auto fill - Double Click - ArrayFormula
Read post →Related terms
Google Sheets formulas
A formula is an instruction in a cell that calculates a result from other cells, ranges, or built-in functions. Every formula begins with =. When inputs change, the sheet recalculates so dashboards and models stay live without manual copy-paste. Formulas are the default automation layer inside the grid before Apps Script or add-ons.
Read guide →ARRAYFORMULA
ARRAYFORMULA tells Google Sheets to treat a formula as an array operation so one expression fills many cells at once. It is common with IF, VLOOKUP, and math on full columns before dynamic arrays made many patterns automatic. It still matters for legacy sheets and explicit control.
Read guide →#SPILL! error
#SPILL! means a dynamic array formula tried to fill multiple cells but something blocked the spill range. Another value, merged cells, or a table in the way stops the output. Clear the obstruction or move the formula to open space.
Read guide →Recalculation
Recalculation is when Google Sheets recomputes formula results after something changes. Most functions update when their input cells change. Volatile functions like NOW, RAND, and OFFSET recalculate more often. Large workbooks may feel slow when thousands of formulas refresh at once.
Read guide →Done reading about union formula?
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