Help with convert m3 water into liters

Third party integrations
2

1m3 is 1000l

1 Like
3 
sensor:
  - platform: template
    sensors:
      value_in_l:
        friendly_name: "Value in Litres" # Or whatever you want to call it
        unit_of_measurement: "L"
        value_template: "{{ ( states('sensor.your_m3_sensor_here') | float / 1000 ) | round(3) }}"
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4

Y’know google will tell how to convert units. Metric is pretty easy.

5

:thinking:

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6

Ha. Oh dear.

states('sensor.your_m3_sensor_here') | float * 1000

2 Likes
7

Ok here is the thing i get this readout
3,942.4597m3 from the begining. I am trying to figure out how to convert
This numbers into liters
Examble:3.942.459 the last number 7 is 10th of liter.
So that i can get this readout per 24 hours
Examble 2.4 tons of water or
Exeamble 2.400 liters

8

As per the eventual outcome of the posts above, you need to multiply your m³ sensor by 1000 to get litres. See @tom_l’s first post, but use float * 1000 rather than float / 1000.

Your daily figure is a new requirement: try the Utility Meter for that. If you want tonnes, you could stay in m³, as 1m³ of water weighs 1 tonne.

9

oh i forgot to mention i am reading from mqtt are there other values for that?

10

Yes. Share your sensor configuration. Correctly formatted.

11 
platform: mqtt
name: Water Meter
state_topic: "watermeter/reading"
unit_of_measurement: m³
icon: mdi:water
unique_id: WaterMeter
12

I am getting info from my hotwater counter with this software

13

See point 11 here for how to format your pasted code correctly.

14

Done with formating
Hope it was right

15 
platform: mqtt
name: Water Meter
state_topic: "watermeter/reading"
value_template: “{{ value | float * 1000 }}”
unit_of_measurement: L
icon: mdi:water
unique_id: WaterMeter
1 Like
16

Thanks alot for your help.
Is it difficult to make template sensor witch calculate cost per day or by month and week

17

There are sensors for that built into home assistant. https://www.home-assistant.io/integrations/utility_meter/

18

but in the gui you can’t adjust liters or m3 or something.

1 Like
19

Dunno why you are still troubled by this getting on for 2 years later. The template is the solution.

20

Yes. Left, at the bottom, click your name, there you can remove the stupid , or . completely and replace it with a space. And other formats. Why this is not under Settings (at least I could not find it). Settings needs A WAY better interface like Apple settings that actually show where you are. I get so lost in Home Assistant settings I have to use Google Maps to find my way…

1 Like
21

Inspired by the posts above (which did not work for me) - this is my solution:

mqtt:
  sensor:
    - name: WaterMeter rate per digitalization round L
      unique_id: WaterMeter_rate_per_digitalization_round_L
      state_topic: "watermeter/main/rate_per_digitalization_round"
      value_template: "{{ (value_json * 1000) }}"
      unit_of_measurement: L
      icon: mdi:arrow-expand-vertical