# Average from 4 MQTT In nodes
**URL:** https://discourse.nodered.org/t/average-from-4-mqtt-in-nodes/83511
**Category:** General
**Tags:** function-node
**Created:** [7 December 2023 19:34 UTC](https://discourse.nodered.org/t/average-from-4-mqtt-in-nodes/83511 "2023-12-07T19:34:51Z")
**Posts on this page:** 3
**Page:** 1
### Author:  [@bastler500](https://discourse.nodered.org/u/bastler500)
#### Post date: [7 December 2023 19:34 UTC](https://discourse.nodered.org/t/average-from-4-mqtt-in-nodes/83511/1 "2023-12-07T19:34:51Z")
Hello guys, in my NODE-RED flow, I have 4 MQTT In nodes receiving data every 10 seconds from a Python script via the server. Now, I want to integrate the 4 inputs from the MQTT nodes into a function and output the average every 10 seconds. I don't have a solution on how to precisely calculate the average value in the end.
---
### Author:  [@E1cid](https://discourse.nodered.org/u/E1cid)
#### Post date: [7 December 2023 19:43 UTC](https://discourse.nodered.org/t/average-from-4-mqtt-in-nodes/83511/2 "2023-12-07T19:43:39Z")
Hi and welcome
You could join the four mqtt nodes manually using a join node, then do your calculation. [Create a single message from separate streams of messages : Node-RED](https://cookbook.nodered.org/basic/join-streams)
Or possibly feed your mqtt nodes into the smooth node which can do an average. [node-red-node-smooth (node) - Node-RED](https://flows.nodered.org/node/node-red-node-smooth)
p.s. I have moved the category to general, as this is not about developing a node.
---
### Author:  [@system](https://discourse.nodered.org/u/system)
#### Post date: [5 February 2024 19:44 UTC](https://discourse.nodered.org/t/average-from-4-mqtt-in-nodes/83511/3 "2024-02-05T19:44:29Z")
This topic was automatically closed 60 days after the last reply. New replies are no longer allowed.