Dear @1001albertpadilla

To do this, you need to override the ticks.callback method in the axis configuration. In the following example, every number between 10000 and 1 trillion would be written as NK. For example: 321K, 981K, 1M, 102M

TS:

 public chartOptions: any = {
    responsive: true,
    scales: {
          xAxes: [
            {
              stacked: true,
            },
          ],
           yAxes: [
            {
              ticks: {
                // Include a dollar sign in the ticks
                callback: function(value: any) {
                  // 2 decimal places => 100, 3 => 1000, etc
                  let decPlaces = 2;
                  decPlaces = Math.pow(10, decPlaces);

                  // Enumerate number abbreviations
                  const abbrev = ['K', 'M', 'B', 'T'];

                  // Go through the array backwards, so we do the largest first
                  for (let i = abbrev.length - 1; i >= 0; i--) {
                    // Convert array index to "1000", "1000000", etc
                    const size = Math.pow(10, (i + 1) * 3);

                    // If the number is bigger or equal do the abbreviation
                    if (size <= value) {
                      // Here, we multiply by decPlaces, round, and then divide by decPlaces.
                      // This gives us nice rounding to a particular decimal place.
                      value = Math.round((value * decPlaces) / size) / decPlaces;

                      // Handle special case where we round up to the next abbreviation
                      if (value === 1000 && i < abbrev.length - 1) {
                        value = 1;
                        i++;
                      }

                      // Add the letter for the abbreviation
                      value += abbrev[i];

                      // We are done... stop
                      break;
                    }
                  }
                  return value;
                },
              },
              stacked: true,
            },
          ],
        }
      }

Hope it helps!

Best Regards, Bartosz.