Generated by SassMeister.com.

SassMeister-input-HTML.html

<div id="scssdebug">scssdebug</div>

SassMeister-input.scss

// ----
// Sass (v3.4.1)
// Compass (v1.0.1)
// ----

@function isNaN($val) { @return type-of($val)!=number; }
@function conv($val, $to-unit){
  $from-unit:unit($val);
  $conv-unit:1px - 1px;
  @return $conv-unit + $val;  
}

@function convert-to-unit($string){
  $units:(px:1px, px:1pt, pc:1pc, in:1in, mm:1mm, cm:1cm, // Absolute
          em:1em, rem:1rem, ch:1ch, ex:1ex,               // Relative - font based
          vv:1vw, vh:1vh, vmin:1vmin, vmax:1vmax,         // Relative - viewport based
          deg:1deg, turn:1turn, grad:1grad,               // Angles
          s:1s, ms:1ms,                                   // Time
          hz:1hz, kHz:1khz,                               // Frequencies
          dpi:1dpi, dpcm:1dpcm, dppx:1dppx                // Resolutions
  );
  
  $index: index($strings, $unit);
}


.foo { hey:conv(120pt,px) }

SassMeister-output.css

.foo {
  hey: 160px;
}

SassMeister-rendered.html

<div id="scssdebug">scssdebug</div>