[Solved]-Chart.js same Y axis on left and right-Chart.js

The solution of @Keno didn't worked for me. Think because my chart needed to be min: 1000 and not min: 0.

What worked for me was:

scales: {
   yAxes: [{
    display: true,
    position: 'right',
    ticks: {
     beginAtZero: false,
     max: 2000,
     min: 1000,
     stepSize: 100
    }
   }, {
    display: true,
    position: 'left',
    ticks: {
     beginAtZero: false,
     max: 2000,
     min: 1000,
     stepSize: 100
    }
   }]
 }

Here's one way:

your yAxes is an Array [] with objects in it {}, so you need to add another yScale to it, here an example:

  scales: {
   yAxes: [{
    display: true,
    position: 'right',
    ticks: {
     beginAtZero: true
    }
   }, {
    display: true,
    position: 'left',
    ticks: {
     beginAtZero: true,
     max: 45,
     min: 0,
     stepSize: 5
    }
   }]
 }

Live demo: Chart.js Double yAxis

Notice you have to reformat one of the new axis to conform to the default, you might need to format both or tie those parameters to your data if it's going to change depending on what you want it to look like.