Playback Time Calculator is a Chrome extension developed by heesangbb. It falls under the category of Browsers and is classified as an Add-ons & Tools subcategory. This free extension allows users to calculate the time of videos and playlists based on their playback speed.

With Playback Time Calculator, users can easily see the time of a video by its playback speed. Additionally, it provides the total playing time of a playlist, taking into account the playback speed of each video.

Using the extension is simple. Just hover your mouse over the video or playlist and the time will be displayed according to the playback speed.

It's worth noting that if a playlist contains more than 100 videos, the extension will count them again once the loading is complete.

Overall, Playback Time Calculator is a useful tool for those who want to accurately calculate the time of videos and playlists based on their playback speed. It's a handy extension for YouTube and Udemy users who want to manage their time effectively.