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LOWER.

Converts all letters in a text string to lowercase.

SyntaxArgumentsExampleInteractive SandboxGeneratorCompatibilityFAQRelatedCheat Sheet
Category: Text & Manipulation
ExcelExcel 365Excel 2021Excel 2019Google Sheets

How it works.

LOWER converts all uppercase letters in a text string into lowercase format.

Formula syntax.

Standard Excel Notation
=LOWER(text)
Tip:Arguments wrapped in square brackets [like_this] are optional; all other arguments are required.

Formula arguments.

Every parameter accepted by the LOWER function is detailed below.

textRequired

The text string to convert.

Example value: A2

Simple example.

Step-by-Step Scenario

Email Address Normalization

Convert mixed-case email entries to lowercase.

Raw EmailNormalized Email
Alex@Company.COM—
SARAH.JONES@DOMAIN.ORG—
Applied Formula
=LOWER(A2)
Expected Result:alex@company.com

Evaluates LOWER over the sample table cells, placing the verified output in cell B2.

Formula generator.

Full Generator Wizard

Customize the argument fields below to generate a tailored LOWER formula ready to paste directly into your worksheet.

Generated FormulaReady to copy
=LOWER()

Expected result behavior.

Returns "alex@company.com" based on sample evaluation criteria and active cell references.

Sample Output:alex@company.com
Output Type:Text String

Best Practices

  • Standardize customer email addresses to prevent duplicate casing issues.

Common Mistakes

  • LOWER only changes letters; numbers and symbols remain unchanged.
Compatibility Database

Platform & version compatibility.

Verified platform compatibility matrix based on actual spreadsheet calculation engine specifications.

Excel✓
Supported
Excel 365✓
Supported
Excel 2021✓
Supported
Excel 2019✓
Supported
Google Sheets✓
Supported
Microsoft Excel History & Version Availability

Core standard function supported across all modern and legacy Microsoft Excel versions (365, 2021, 2019, 2016, 2013, 2010), as well as Excel for the Web and Mac.

Google Sheets Compatibility Notes

100% compatible with Google Sheets. Uses identical argument order, data types, and standard calculation logic.

Frequently asked questions.

Technical Q&A
Can I use LOWER across different worksheets in Excel?↓

Yes. You can reference cells located on other sheets by including the sheet name followed by an exclamation mark, for example: =LOWER(Sheet2!A2:A10). If the sheet name contains spaces, enclose it in single quotes: ='Q1 Report'!A2:A10.

What is the most common reason for errors in LOWER?↓

LOWER only changes letters; numbers and symbols remain unchanged.

Does LOWER work identically in Google Sheets?↓

Yes, LOWER is supported in both Microsoft Excel and Google Sheets with standard evaluation behavior.