Nokori

Nokori tells you exactly when you'll finish an anime. Pick a series, either by searching for it or by letting the extension detect it on the page you have open. Then enter how many episodes you watch per day and how many you've already seen, and it instantly shows how many days you need, the date you'll finish, and the total and daily time you'll spend watching. If the anime is still airing, it calculates up to the latest released episode and tells you when the next one comes out. It's worth installing because it helps you plan your binges without doing the math by hand, lets you save up to 10 anime with your progress and mark the ones you finish, and lets you share your plan as an image on social media so you can watch a series with your friends. It's available in seven languages, free, with no ads and no account needed, and your list stays in your browser only.