Power Automate Expressions

String function Task
chunk Split a string or collection into chunks of equal length.
concat Combine two or more strings, and return the combined string.
endsWith Check whether a string ends with the specified substring.
formatNumber Return a number as a string based on the specified format
guid Generate a globally unique identifier (GUID) as a string.
indexOf Return the starting position for a substring.
isFloat Return a boolean that indicates whether a string is a floating-point number.
isInt Return a boolean that indicates whether a string is an integer.
lastIndexOf Return the starting position for the last occurrence of a substring.
length Return the number of items in a string or array.
nthIndexOf Return the starting position or index value where the nth occurrence of a substring appears in a string.
replace Replace a substring with the specified string, and return the updated string.
slice Return a substring by specifying the starting and ending position or value. See also substring.
split Return an array that contains substrings, separated by commas, from a larger string based on a specified delimiter character in the original string.
startsWith Check whether a string starts with a specific substring.
substring Return characters from a string, starting from the specified position. See also slice.
toLower Return a string in lowercase format.
toUpper Return a string in uppercase format.
trim Remove leading and trailing whitespace from a string, and return the updated string.

Collection function Task
chunk Split a string or collection into chunks of equal length.
contains Check whether a collection has a specific item.
empty Check whether a collection is empty.
first Return the first item from a collection.
intersection Return a collection that has only the common items across the specified collections.
item If this function appears inside a repeating action over an array, return the current item in the array during the action's current iteration.
join Return a string that has all the items from an array, separated by the specified character.
last Return the last item from a collection.
length Return the number of items in a string or array.
reverse Reverse the order of items in an array.
skip Remove items from the front of a collection, and return all the other items.
sort Sort items in a collection.
take Return items from the front of a collection.
union Return a collection that has all the items from the specified collections.

Logical comparison function Task
and Check whether all expressions are true.
equals Check whether both values are equivalent.
greater Check whether the first value is greater than the second value.
greaterOrEquals Check whether the first value is greater than or equal to the second value.
if Check whether an expression is true or false. Based on the result, return a specified value.
isFloat Return a boolean that indicates whether a string is a floating-point number.
isInt Return a boolean that indicates whether a string is an integer.
less Check whether the first value is less than the second value.
lessOrEquals Check whether the first value is less than or equal to the second value.
not Check whether an expression is false.
or Check whether at least one expression is true.

Conversion function Task
array Return an array from a single specified input. For multiple inputs, see createArray.
base64 Return the base64-encoded version for a string.
base64ToBinary Return the binary version for a base64-encoded string.
base64ToString Return the string version for a base64-encoded string.
binary Return the binary version for an input value.
bool Return the Boolean version for an input value.
createArray Return an array from multiple inputs.
dataUri Return the data URI for an input value.
dataUriToBinary Return the binary version for a data URI.
dataUriToString Return the string version for a data URI.
decimal Return the decimal number for a decimal string.
decodeBase64 Return the string version for a base64-encoded string.
decodeDataUri Return the binary version for a data URI.
decodeUriComponent Return a string that replaces escape characters with decoded versions.
encodeUriComponent Return a string that replaces URL-unsafe characters with escape characters.
float Return a floating point number for an input value.
int Return the integer version for a string.
json Return the JavaScript Object Notation (JSON) type value or object for a string or XML.
string Return the string version for an input value.
uriComponent Return the URI-encoded version for an input value by replacing URL-unsafe characters with escape characters.
uriComponentToBinary Return the binary version for a URI-encoded string.
uriComponentToString Return the string version for a URI-encoded string.
xml Return the XML version for a string.

Math function Task
add Return the result from adding two numbers.
div Return the result from dividing two numbers.
max Return the highest value from a set of numbers or an array.
min Return the lowest value from a set of numbers or an array.
mod Return the remainder from dividing two numbers.
mul Return the product from multiplying two numbers.
rand Return a random integer from a specified range.
range Return an integer array that starts from a specified integer.
sub Return the result from subtracting the second number from the first number.

Date or time function Task
addDays Add days to a timestamp.
addHours Add hours to a timestamp.
addMinutes Add minutes to a timestamp.
addSeconds Add seconds to a timestamp.
addToTime Add specified time units to a timestamp. See also getFutureTime.
convertFromUtc Convert a timestamp from Universal Time Coordinated (UTC) to the target time zone.
convertTimeZone Convert a timestamp from the source time zone to the target time zone.
convertToUtc Convert a timestamp from the source time zone to Universal Time Coordinated (UTC).
dateDifference Return the difference between two dates as a timespan.
dayOfMonth Return the day of the month component from a timestamp.
dayOfWeek Return the day of the week component from a timestamp.
dayOfYear Return the day of the year component from a timestamp.
formatDateTime Return the date from a timestamp.
getFutureTime Return the current timestamp plus the specified time units. See also addToTime.
getPastTime Return the current timestamp minus the specified time units. See also subtractFromTime.
parseDateTime Return the timestamp from a string that contains a timestamp.
startOfDay Return the start of the day for a timestamp.
startOfHour Return the start of the hour for a timestamp.
startOfMonth Return the start of the month for a timestamp.
subtractFromTime Subtract a number of time units from a timestamp. See also getPastTime.
ticks Return the ticks property value for a specified timestamp.
utcNow Return the current timestamp as a string.

Referencing function Task
parameters Return a parameter value that is in the definition.
result Return the results from the top-level actions in the specified scoped action, such as a For_each, Until, or Scope action.
actions Return a actions value from other JSON name and value pairs or the output of the runtime action.
outputs Return a actions value from the JSON value (same as actions()?['outputs']).
body Return a actions values body from the JSON value (same as actions()?['outputs']?['body']).
trigger Return the trigger value from other JSON name and value pairs or the output of the runtime action.
triggerOutputs Return the trigger value from the JSON value (same as trigger()?['outputs'])
triggerBody Return the trigger values body from the JSON value (same as trigger()?['outputs']?['body'])
item Return the key of a record when used in a repeating action (like create csv table).
items Return the current record inside a loop (Like apply to each).
iterationIndexes Return the current iteration inside a Do until loop (same as a counter).
variables Return a local variable.

Workflow function Task
action Return the current action's output at runtime, or values from other JSON name-and-value pairs. See also actions.
actions Return an action's output at runtime, or values from other JSON name-and-value pairs. See also action.
body Return an action's body output at runtime.
formDataMultiValues Create an array with the values that match a key name in form-data or form-encoded action outputs.
formDataValue Return a single value that matches a key name in an action's form-data or form-encoded output.
item If this function appears inside a repeating action over an array, return the current item in the array during the action's current iteration.
items If this function appears inside a Foreach or Until loop, return the current item from the specified loop.
iterationIndexes If this function appears inside an Until loop, return the index value for the current iteration. You can use this function inside nested Until loops.
listCallbackUrl Return the "callback URL" that calls a trigger or action.
multipartBody Return the body for a specific part in an action's output that has multiple parts.
outputs Return an action's output at runtime.
parameters Return the value for a parameter that is described in your workflow definition.
result Return the inputs and outputs from the top-level actions inside the specified scoped action, such as For_each, Until, and Scope.
trigger Return a trigger's output at runtime, or from other JSON name-and-value pairs. See also triggerOutputs and triggerBody.
triggerBody Return a trigger's body output at runtime. See trigger.
triggerFormDataValue Return a single value matching a key name in form-data or form-encoded trigger outputs.
triggerMultipartBody Return the body for a specific part in a trigger's multipart output.
triggerFormDataMultiValues Create an array whose values match a key name in form-data or form-encoded trigger outputs.
triggerOutputs Return a trigger's output at runtime, or values from other JSON name-and-value pairs. See trigger.
variables Return the value for a specified variable.
workflow Return all the details about the workflow itself during run time.

URI parsing function Task
uriHost Return the host value for a uniform resource identifier (URI).
uriPath Return the path value for a uniform resource identifier (URI).
uriPathAndQuery Return the path and query values for a uniform resource identifier (URI).
uriPort Return the port value for a uniform resource identifier (URI).
uriQuery Return the query value for a uniform resource identifier (URI).
uriScheme Return the scheme value for a uniform resource identifier (URI).

Manipulation function Task
addProperty Add a property and its value, or name-value pair, to a JSON object, and return the updated object.
coalesce Return the first non-null value from one or more parameters.
removeProperty Remove a property from a JSON object and return the updated object.
setProperty Set the value for a JSON object's property and return the updated object.
xpath Check XML for nodes or values that match an XPath (XML Path Language) expression, and return the matching nodes or values.
By WyattDave