[Chartjs]-How to fit Doughnut Chart JS into Bootstrap column?

You can add some CSS to properly style Chart.js canvas and div container:

canvas {
  width: 100%;
  height: 100%;
  display: block;
}

div.chart-container {
  padding: 1px;
}

Check this fiddle updated: http://jsfiddle.net/beaver71/ht7uevay/