Rem to PX and PX to Rem conversions according to defined $base-font-size

_remify.scss

/* @author Bilal Cinarli */

/** -------------------------------------------
    Text Related Functions
    ------------------------------------------- **/
/**
  * Rem to PX
  */
@function rem-to-px($font-size) {
    $u: unit($font-size);

    @if($u == 'px'){
        @return $font-size;
    }

    $unitless: remove-unit($font-size);
    @return $unitless * $base-font-size;
}

/**
 * REM converter
 */
@function rem($font-size) {
    $u: unit($font-size);

    // rem calculations
    @if ($u == 'rem'){
        @return $font-size;
    } @else {
        $convert: $font-size/$base-font-size;
        @return #{$convert}rem;
    }
}