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HTML

              
                <table>
  <thead>
    <tr>
      <th>Type</th>
      <th>Expected</th>
      <th>Actual</th>
    </tr>
  </thead>
  <tbody>
    <tr class="translate-px">
      <th>translateX( calc(20 * 1px))</th>
      <td><p></p></td>
      <td><p></p></td>
    </tr>
    <tr class="translate-vmin">
      <th>translateX( calc(2 * 1vmin))</th>
      <td><p></p></td>
      <td><p></p></td>
    </tr>
    <tr class="translate-percent">
      <th>translateX( calc(200 * 1%))</th>
      <td><p></p></td>
      <td><p></p></td>
    </tr>
    <tr class="width-px">
      <th>width: calc(50 * 1px)</th>
      <td><p></p></td>
      <td><p></p></td>
    </tr>
    <tr class="width-ch">
      <th>width: calc(6 * 1ch)</th>
      <td><p></p></td>
      <td><p></p></td>
    </tr>
    <tr class="rotate-deg">
      <th>rotate( calc(45 * 1deg))</th>
      <td><p></p></td>
      <td><p></p></td>
    </tr>
    <tr class="rotate-turn">
      <th>rotate( calc(.125 * 1turn))</th>
      <td><p></p></td>
      <td><p></p></td>
    </tr>
    <tr class="rotate-combo">
      <th>rotate( calc(45deg + .5turn))</th>
      <td><p></p></td>
      <td><p></p></td>
    </tr>
    <tr class="opacity">
      <th>opacity( calc(.25 * 1))</th>
      <td><p></p></td>
      <td><p></p></td>
    </tr>
    <tr class="scale-x">
      <th>scaleX( calc(2 * 1))</th>
      <td><p></p></td>
      <td><p></p></td>
    </tr>
    <tr class="font-size">
      <th>font-size: calc(2 * 1rem)</th>
      <td><p></p></td>
      <td><p></p></td>
    </tr>
    <tr class="font-size2">
      <th>font-size: calc(200 * 1%)</th>
      <td><p></p></td>
      <td><p></p></td>
    </tr>
    <tr class="line-height">
      <th>line-height: calc(3 * 1)</th>
      <td><p>&nbsp;</p></td>
      <td><p>&nbsp;</p></td>
    </tr>
    <tr class="gradient-stop">
      <th>linear-gradient(to right, #45cdd4 calc(30 * 1%), transparent)</th>
      <td><p>&nbsp;</p></td>
      <td><p>&nbsp;</p></td>
    </tr>
    <tr class="hue-deg">
      <th>hsl( calc(50 * 2), 50%, 50%)</th>
      <td><p></p></td>
      <td><p></p></td>
    </tr>
    <tr class="hsl-saturation">
      <th>hsl( 100, calc(100 * 1%), 50%)</th>
      <td><p></p></td>
      <td><p></p></td>
    </tr>
    <tr class="color-g">
      <th>rgb( 80, calc(255 * 1), 80)</th>
      <td><p></p></td>
      <td><p></p></td>
    </tr>
    <tr class="color-ga">
      <th>rgba( 80, 255, 80, calc(1 * .5))</th>
      <td><p></p></td>
      <td><p></p></td>
    </tr>
    <tr class="cubic add">
      <th>cubic-bezier( calc(0 + .25), 1, 0, 1)</th>
      <td><p></p></td>
      <td><p></p></td>
    </tr>
    <tr class="cubic multiply">
      <th>cubic-bezier( calc(1 * .25), 1, 0, 1)</th>
      <td><p></p></td>
      <td><p></p></td>
    </tr>
    <tr class="transition-duration">
      <th>*-duration: calc(1000 * 1ms)</th>
      <td><p></p></td>
      <td><p></p></td>
    </tr>
    <tr class="filter-blur">
      <th>blur( calc(.5 * 2px))</th>
      <td><p></p></td>
      <td><p></p></td>
    </tr>
    <tr class="filter-hue">
      <th>hue-rotate( calc(90 * 1deg))</th>
      <td><p></p></td>
      <td><p></p></td>
    </tr>
  </tbody>
  <tfoot>
    <tr>
      <td colspan="3">Started this as I was seeing what appeared to be broken CSS Variables... but turned out to be a misunderstanding on how calc is implemented in browsers.  Some properties allow you to take any unitless number and multiply it by a number+unit to get a final unit value... others do not.  As of Firefox 57, everything in this test works except the colors. Safari and Chrome support all of the ones I've tested. Edge does fine with px, vmin, and other linear distance units... but does not seem to handle degrees, unitless,&nbsp;etc. (except in colors, interestingly)</td>
    </tr>
  </tfoot>
</table>

        
              
            
!

CSS

              
                p {
  width: 1em;
  height: 1em;
  border: .15rem solid #45cdd4;
  display: inline-block;
}
:not(tfoot) > tr > td {
  background: radial-gradient(circle at center center, black 0, black 1px, transparent 2px) center center no-repeat;
}

.width-px td:first-of-type p {
  width: 50px;
}
.width-px td:nth-of-type(2) p {
  width: calc(50 * 1px);
}
.width-ch td:first-of-type p {
  width: 6ch;
}
.width-ch td:nth-of-type(2) p {
  width: calc(6 * 1ch);
}
.translate-px td:first-of-type p {
  transform: translateX(20px);
}
.translate-px td:nth-of-type(2) p {
  transform: translateX(calc(20 * 1px));
}
.translate-vmin td:first-of-type p {
  transform: translateX(2vmin);
}
.translate-vmin td:nth-of-type(2) p {
  transform: translateX(calc(2 * 1vmin));
}
.translate-percent td:first-of-type p {
  transform: translateX(200%);
}
.translate-percent td:nth-of-type(2) p {
  transform: translateX(calc(200 * 1%));
}
.rotate-deg td:first-of-type p {
  transform: rotate(45deg);
}
.rotate-deg td:nth-of-type(2) p {
  transform: rotate(calc(45 * 1deg));
}
.rotate-turn td:first-of-type p {
  transform: rotate(.125turn);
}
.rotate-turn td:nth-of-type(2) p {
  transform: rotate(calc(.125 * 1turn));
}
.rotate-combo td:first-of-type p {
  transform: rotate(.625turn);
}
.rotate-combo td:nth-of-type(2) p {
  transform: rotate(calc(45deg + .5turn));
}
.opacity td:first-of-type p {
  opacity: .25;
}
.opacity td:nth-of-type(2) p {
  opacity: calc(.25 * 1);
}
.scale-x td:first-of-type p {
  transform: scaleX(2);
}
.scale-x td:nth-of-type(2) p {
  transform: scaleX(calc(2 * 1));
}
.font-size td:first-of-type p {
  font-size: 2rem;
}
.font-size td:nth-of-type(2) p {
  font-size: calc(2 * 1rem);
}
.font-size2 td:first-of-type p {
  font-size: 200%;
}
.font-size2 td:nth-of-type(2) p {
  font-size: calc(200 * 1%);
}
.line-height td:first-of-type p {
  line-height: 3;
  height: auto;
}
.line-height td:nth-of-type(2) p {
  line-height: calc(3 * 1);
  height: auto;
}
.gradient-stop td:first-of-type p {
  background: linear-gradient(to right, #45cdd4 30%, transparent);
}
.gradient-stop td:nth-of-type(2) p {
  background: linear-gradient(to right, #45cdd4 calc(30 * 1%), transparent);
}

.hue-deg td:first-of-type p {
  background: hsl(100, 50%, 50%);
}
.hue-deg td:nth-of-type(2) p {
  background: hsl(calc(50 * 2), 50%, 50%);
}
.hsl-saturation td:first-of-type p {
  background: hsl(100, 100%, 50%);
}
.hsl-saturation td:nth-of-type(2) p {
  background: hsl(100, calc(100 * 1%), 50%);
}
.color-g td:first-of-type p {
  background: rgb(80, 255, 80);
}
.color-g td:nth-of-type(2) p {
  background: rgb(80, calc(255 * 1), 80);
}
.color-ga td:first-of-type p {
  background: rgba(80, 255, 80, .5);
}
.color-ga td:nth-of-type(2) p {
  background: rgba(80, 255, 80, calc(.5 * 1));
}
.cubic p {
  animation: go 1000ms infinite alternate;
}
.cubic.add td:first-of-type p {
  animation-timing-function: cubic-bezier(.25, 1, 0, 1)
}
.cubic.add td:nth-of-type(2) p {
  animation-timing-function: cubic-bezier(calc(0 + .25), 1, 0, 1);
}
.cubic.multiply td:first-of-type p {
  animation-timing-function: cubic-bezier(.25, 1, 0, 1)
}
.cubic.multiply td:nth-of-type(2) p {
  animation-timing-function: cubic-bezier(calc(1 * .25), 1, 0, 1);
}
.transition-duration p {
  animation: go 0ms infinite alternate linear;
}
.transition-duration td:first-of-type p {
  animation-duration: 1000ms;
}
.transition-duration td:nth-of-type(2) p {
  animation-duration: calc(1000 * 1ms);
}
.filter-blur td:first-of-type p {
  filter: blur(1px);
}
.filter-blur td:nth-of-type(2) p {
  filter: blur(calc(.5 * 2px));
}
.filter-hue td:first-of-type p {
  filter: hue-rotate(90deg);
}
.filter-hue td:nth-of-type(2) p {
  filter: hue-rotate(calc(90 * 1deg));
}

@keyframes go {
  from {
    transform: translateX(-10vmin)
  }
  to {
    transform: translateX(10vmin)
  }
}





body {
  font-family: system-ui, -apple-system, 'Segoe UI', 'Roboto',  sans-serif;
  min-height: 100vh;
  background: hsl(230, 10%, 94%);
}
table {
  width: 100%;
  table-layout: fixed;
  border-collapse: collapse;
}
th, td {
  width: 25%;
  border: 1px solid grey;
  text-align: center;
  vertical-align: center;
  padding: 1rem .25rem;
}
th:first-child,
td:first-child {
  width: 50%;
}
th, tfoot td {
  font-size: .875rem;
}
              
            
!

JS

              
                
              
            
!
999px

Console