# Transforms

These events transform values using math functions.

Sometimes we want to transform a value before passing it along to other events. We can do this by using a transform function. Transforms come in two types: math functions and conversions.

## Math Functions

Transforms for using math functions follow the form:

`=T('ceil')`

This will take an inbound numeric value of `1.1`

and transform it into `2.0`

.

SEL supports the following math functions: `ceil`

, `floor`

, `abs`

, `log`

, `sqrt`

, `round`

.

See an example of Transforms in practice:

## Conversions

Transforms can also be used to convert between common units, like liters, gallons, miles, inches, yards, pints, etc. For example:

`=T('liters', 'gallons')`

`=T('inches', 'meters')`

The convention being `'from', 'to'`

.

A full list of all available units is beyond the scope of this guide, may be found here.

Updated over 1 year ago