You can watch "How the Grinch Stole Christmas" online for free by streaming it on the following websites: 1. Tubi (https://tubitv.com/movies/361694/how-the-grinch-stole-christmas) 2. Vudu (https://www.vudu.com/content/movies/details/How-the-Grinch-Stole-Christmas/779943) 3. IMDb TV (https://www.amazon.com/How-Grinch-Stole-Christmas-Sam-Hecht/dp/B00073FTRU) 4.