# `abs` The `abs` filter returns the absolute value. <table class="highlighttable"><tr><td class="linenos"><div class="linenodiv"><pre>1 2 3 4 5</pre></div></td><td class="code"><div class="highlight"><pre>{# number = -5 #} {{ number|abs }} {# outputs 5 #} </pre></div></td></tr></table> Note Internally, Twig uses the PHP [abs](http://php.net/abs) [http://php.net/abs] function.