# Rule action: Calculate length

**Used for:** calculating the number of characters in a field.\
**Used in:** "THEN"-statements and "ELSE"-statements.

Sometimes you need to know how long the content in a certain field is for your products. The calculate length rule calculates the number of characters in the field you choose. For example, you could calculate how long the title of every product is with the following rule:

<figure><img src="/files/c474d7b64f346cea4d54e4bee178410ca12a02e4" alt=""><figcaption></figcaption></figure>

This would result in the following output:

<figure><img src="/files/1437ba64ce7046c1e59190a2ef9ae330f3e4cdd3" alt=""><figcaption></figcaption></figure>


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