The calculator is now updated with the diablofans' chart.
I've made a couple updates for the past few weeks. The calculator is now mobile-friendly.
If you play on the Seasons and wonder what Paragon level your non-Seasonal character will be when the Season ends, you can calculate your combined paragons here: http://www.d3bg.org/paragon-calculator/en.php
I made it for our fan site but also translated in English so everybody can use it.