LEN function in Excel - Cheat Sheet & Quick Revision

Recall & Review

beginner

What does the LEN function do in Excel?

The LEN function counts the number of characters in a text string, including spaces and punctuation.

beginner

Write the formula to find the length of the text in cell A1.

Use =LEN(A1) to get the number of characters in cell A1.

beginner

Does LEN count spaces in a text string?

Yes, LEN counts all characters including spaces, punctuation, and special characters.

beginner

What will =LEN("") return?

It returns 0 because the text string is empty and has no characters.

intermediate

How can LEN help when cleaning data?

LEN helps find cells with unexpected extra spaces or missing text by showing the character count.

What does the formula =LEN("Hello World") return?

A 11

B 12

C 10

D 9

The text "Hello World" has 11 characters including the space.

Which of these is a correct use of LEN to count characters in cell B2?

A =LEN(B2)

B =LENGTH(B2)

C =COUNT(B2)

D =SIZE(B2)

LEN is the correct function to count characters; LENGTH, COUNT, and SIZE are not valid for this.

If cell C3 contains " Excel ", what does =LEN(C3) count?

A 5

B 7

C 8

D 9

Spaces before and after the word are counted, so total characters are 9.

What does =LEN(12345) return in Excel?

A 12345

B Error

C 5

D 0

Excel treats numbers as text in LEN, so it counts the digits, returning 5.

Which of these is NOT counted by LEN?

A Spaces

B Hidden formatting

C Letters

D Punctuation

LEN counts visible characters including spaces and punctuation but does not count hidden formatting.

Explain how the LEN function works and give an example of when you might use it.

Think about how you check the length of a word or sentence.

Describe how LEN treats spaces and numbers when counting characters.

Consider what happens if you count characters in a number or a sentence with spaces.