Value_template error mqtt temperature and barometric pressure conversions

@raenrfm wrote:

I’m trying to take the values from my weather station which are posting to my mosquitto broker. The temperature is in F and the pressure is in inHg. I’m trying to use a value_template to convert these to MKS units or C and kPa respectively. I have battled with this for hours and it is not making any sense to me. I am new to HA so I’m probably missing something obvious, but any help would be appreciated. Here is my sensors.yaml:

- platform: mqtt
  name: "SOC"
  state_topic: "weather/soc"
  unit_of_measurement: '%'

- platform: mqtt 
  name: "Indoor Temperature" 
  state_topic: "weather/inTempC"
  unit_of_measurement: '°C'

- platform: mqtt 
  name: "Indoor Humidity" 
  state_topic: "weather/inHumidity"
  unit_of_measurement: '%' 

- platform: mqtt
  name: "Outdoor Temperature"
  state_topic: "weather/outTemp"
  unit_of_measurement: '°F'

- platform: mqtt
  name: "Outdoor Humidity"
  state_topic: "weather/outHumidity"
  unit_of_measurement: '%'

- platform: mqtt
  name: "Barometric Pressure"
  state_topic: "weather/pressure"
  unit_of_measurement: 'kPa'

- platform: template
  sensors:
    outdoor_temperature_c:
      friendly_name: "Outdoor Temperature"
      unit_of_measurement: '°C'
      value_template: "{{ (states('sensor.outdoor_temperature') | (float-32)/1.8) | round(1) }}"
    barometric_pressure_kpa:
      friendly_name: "Barometric Pressure"
      unit_of_measurement: 'kPa'
      value_template: "{{ (states('sensor.barometric_pressure') | (float+0.83)*3.38639) | round(1) }}"

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