Docs / Transformers / Math

Math

Perform arithmetic on payload values.

Ports

Inlet
Input (any)
Outlet
Output (number)

Configuration

Parameter Type Default Description
expression text A math expression. Use {{key}} to reference payload values. Supports +, -, *, /, %, and parentheses.
outputKey text "result" The payload key where the computed number is stored.
precision number -1 Number of decimal places to round to. -1 means no rounding.

Output Payload

result The computed number (or the key name configured via outputKey).

Example