Excel LOWER function


The Excel LOWER function converts all letters in a given text string to lowercase. It’s useful for standardizing text data and ensuring consistency in text formatting.
  • text: The text string to convert to lowercase.
Return value
The text string with all letters converted to lowercase.

How to use

LOWER is primarily used for text normalization, especially when dealing with user-input data or importing data from various sources. It helps in avoiding case-sensitive issues in text comparisons or lookups.


Simple LOWER
Converting Text to Lowercase: To convert a string to all lowercase letters:
If A1 contains “Excel Function”, this formula returns “excel function”.
LOWER with Cell References
Lowercase Conversion for Dynamic Data: Applying LOWER to a cell reference:
Converts the text in B2 to lowercase, regardless of its original case.
LOWER in Data Cleaning
Standardizing Text Data: Using LOWER for consistent text format across a dataset:
Helpful in scenarios where text data from different sources needs standardization.
Combining LOWER with CONCATENATE: Creating lowercase concatenated strings:
					=LOWER(CONCATENATE(D2, " ", E2))
Merges and converts the contents of D2 and E2 to lowercase.
LOWER for Case-Insensitive Comparisons
Lowercase Conversion for Comparisons: Preparing text for case-insensitive comparisons:
					=EXACT(LOWER(F2), "target text")
Converts F2 to lowercase and compares it with “target text” without case sensitivity.

Additional Notes

  • LOWER is useful when case consistency is crucial, such as in email addresses or usernames.
  • For converting text to uppercase, use the UPPER function.
  • In combination with PROPER, LOWER can also be used to convert text to title case.

Related Functions

Excel UPPER function

The Excel UPPER function converts text to uppercase, standardizing text for comparisons or display.

Excel PROPER function

The Excel PROPER function capitalizes the first letter of each word in a text string, useful for formatting names and titles.

Excel EXACT function

The Excel EXACT function compares two text strings, returning TRUE if they match exactly, essential for case-sensitive comparisons.

Excel LOWER function

The Excel LOWER function converts text to all lowercase, standardizing text data for consistent processing.

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