Test if false: false

The false test checks whether a value is false. It performs a strict identity check, meaning only the boolean value false passes. Values like 0, "", none, and the string "false" do not match.

This is useful when you need to verify that a value is specifically the boolean false and not merely a falsy value. In Home Assistant, entityAn entity represents a sensor, actor, or function in Home Assistant. Entities are used to monitor physical properties or to control other entities. An entity is usually part of a device or a service. [Learn more] attributes can be actual booleans, and this test lets you check for an exact false value without accidentally matching other falsy types like 0 or an empty string.

Usage

Here’s how to use this template function. Copy any example and adjust it to your setup.

{% if false is false %}
  It is false
{% endif %}

It is false

Function signature

The signature is a technical summary of this template function. It shows the name of the function, the values (called parameters) it accepts, and what type of data each parameter expects (for example, a piece of text or a number).

Function parameters that have a = with a value after them are optional. If you leave them out, the default value shown is used automatically. Function parameters without a default are required.

false(
    value: Any,
) -> bool

Function parameters

The following parameters can be provided to this test.

Good to know

• This is a strict identity test. Only the boolean false passes, while 0, empty strings, and None do not.
• Entity states are strings, so states("switch.x") is false is always false. Use is_state("switch.x", "off") instead.

Try it yourself

Ready to test this? Open Developer tools > Template, paste the example into the Template editor, and watch the result update on the right. Edit the values to see how the function adapts to your own entitiesAn entity represents a sensor, actor, or function in Home Assistant. Entities are used to monitor physical properties or to control other entities. An entity is usually part of a device or a service. [Learn more].

More examples

Real scenarios where this function comes up in automations and templates. Copy any example and adapt it to your setup.

Strict boolean check

Only the boolean false passes; falsy values like 0 or `` do not.

{{ false is false }}
{{ 0 is false }}
{{ "" is false }}

true
false
false

Verify a boolean attribute

Check that an entityAn entity represents a sensor, actor, or function in Home Assistant. Entities are used to monitor physical properties or to control other entities. An entity is usually part of a device or a service. [Learn more] attribute is specifically false.

{% set charging = state_attr("sensor.phone", "is_charging") %}
{% if charging is false %}
  Phone is not charging
{% endif %}

Phone is not charging

Still stuck?

The Home Assistant community is quick to help: join Discord for real-time chat, post on the community forum with your template and expected result, or share on our subreddit /r/homeassistant.

Related template functions

These functions work well alongside this one:

• Convert to boolean: bool - Converts a value to a boolean (true/false), with an optional default if conversion fails.

• Test same object: sameas - Tests whether a value is the same object as another (identity check).