UPPER, LOWER, and PROPER Functions in Excel: Complete Guide with Examples | SheetXAI

The Problem

You have names or text in column A with inconsistent capitalization (some are all caps, some are lowercase, some are mixed). You need to standardize the text to all uppercase, all lowercase, or proper case (first letter of each word capitalized).

The Easy Way: Use SheetXAI

If you don't want to mess with formulas, the fastest way to do this is simply by asking.

With SheetXAI, you can open the sidebar and type:

Convert the text in A2 to proper case (first letter of each word capitalized).

SheetXAI will instantly write the formula or script for you and fill the cells. It handles the syntax so you can focus on the result.

The Manual Way: The Formulas You Need

To do this manually, you need to use: UPPER, LOWER, or PROPER.

1. UPPER

Converts all letters in a text string to uppercase (capital letters). Makes all text uppercase.

Syntax: =UPPER(text)

• text: The text string you want to convert to uppercase.

Example: UPPER('hello world') returns 'HELLO WORLD'.

2. LOWER

Converts all letters in a text string to lowercase. Makes all text lowercase.

Syntax: =LOWER(text)

• text: The text string you want to convert to lowercase.

Example: LOWER('HELLO WORLD') returns 'hello world'.

3. PROPER

Converts text to proper case (title case). Capitalizes the first letter of each word and makes the rest lowercase.

Syntax: =PROPER(text)

• text: The text string you want to convert to proper case.

Example: PROPER('hello world') returns 'Hello World'.

Understanding the Logic

1. UPPER: Converts all text to CAPITAL LETTERS. Use for headers, codes, or emphasis.
2. LOWER: Converts all text to lowercase. Use for email addresses, usernames, or standardization.
3. PROPER: Converts to Title Case (First Letter Of Each Word Capitalized). Use for names, titles, or professional formatting.

Key points:

• All three functions only affect letters (numbers and symbols stay the same)
• PROPER capitalizes the first letter of each word (even small words like 'the')
• Often used for data cleaning and standardization
• Can be combined with other text functions

Common use cases:

• UPPER: Product codes, IDs, headers
• LOWER: Email addresses, URLs, standardization
• PROPER: Names, titles, professional documents

The Final Formula:

=PROPER(A2)

Conclusion

Now you know the "classic" way to solve this using formulas. It's a great skill to have.

But for those times when you just want the job done without the mental math, SheetXAI is there to help.

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