> For the complete documentation index, see [llms.txt](https://guides.noloco.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://guides.noloco.io/data/collections/formulas/operators/logic.md).

# Logic operators

All logic and comparison operators supported in Noloco [formulas](/data/collections/formulas.md). Use these for conditional values, boolean composition, and value comparisons.

**Available operators:** `<`, `>`, `=`, `AND`, `OR`, `NOT`, `IF`, `TRUE`, `FALSE`, `NULL`, `ISNUMBER`.

***

### <

`value1 < value2`

Returns `true` if the first value is less than the second.

**Example:** `1 < 2`

### >

`value1 > value2`

Returns `true` if the first value is greater than the second.

**Example:** `1 > 2`

### =

`value1 = value2`

Returns `true` if the first value equals the second.

**Example:** `1 = 2`

### AND

`AND(logicValue, logicValue, ...)`

Returns `true` if all arguments are `true`.

### OR

`OR(logicValue, logicValue, ...)`

Returns `true` if any argument is `true`.

### NOT

`NOT(logicValue)`

Returns the opposite of a logical value.

**Example:** `NOT(TRUE())` returns `FALSE()`

### IF

`IF(logicValue, trueValue, falseValue)`

Returns one value when a condition is `true`, and another when it is `false`.

### TRUE

`TRUE()`

Returns the value `true`.

### FALSE

`FALSE()`

Returns the value `false`.

### NULL

`NULL()`

Returns the value `null`.

{% hint style="warning" %}
**Must be called as `NULL()` with parentheses.** Writing `NULL` (without parentheses) is not valid and will cause the formula to fail. The same applies to `TRUE()` and `FALSE()`.
{% endhint %}

### ISNUMBER

`ISNUMBER(value)`

Returns `true` if the argument is a number.

***

### Related

* [Formulas overview](/data/collections/formulas.md)
* [Examples](/data/collections/formulas/examples.md) — see "Joining text fields" for an `IF`/`OR`/`ISBLANK` pattern
* [Date & time operators](/data/collections/formulas/operators/date-and-time.md)
* [Math operators](/data/collections/formulas/operators/math.md)
* [Text operators](/data/collections/formulas/operators/text.md)


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