The Power Automate Length function helps you to check the length of a string or to check the length of an array.
In this article, I’ll introduce you to the length function and will provide a step-by-step guide on how to use the function in a Microsoft flow.
Power Automate Length Function
The Power Automate length function returns the length of a string (number of characters) or the length of an array (number of elements for an array).
Syntax
length('<collection>')
length([<collection>])Input parameters
- collection (mandatory):
Return value
- An Integer that represents the number of characters in a string for a given string or the number of elements for an array.
Power Automate Length Expression Examples
Here are some examples on how to use length expression in Power Automate.
Power Automate expression length of string
length('abc')
=> 3Power Automate expression length of array
length(createArray('a', 'b', 'c'))
=> 3How To Use The Length Function In Power Automate
Let’s take a look on how to get the length of a string and how to get the length of an array in Power Automate in Microsoft flow.
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Create a new flow
Create a new flow
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Create a string variable
New string variable
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Compose a Power Automate length expression ‘length(variables(‘myString’))’
Power Automate length string expression
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Create an array variable
New array variable
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Compose a Power Automate length expression ‘length(variables(‘myArray’))’
Power Automate length array expression
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Do a test run and check the result for the string
Length of Luke is 4 (4 characters)
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Check the result for the array
Length of array is 6 (6 items)
More Examples
Get the length of an integer
The Power Automate length function does not work with numbers. To get the length of a number, you need to convert it to a string. Use the string function to do the conversion and use length on the resulting string.
length(string(1234))
=> 4