Max Length of Post excerpts

Hello there,

I’ve added a post grid, that features recent Posts. To test it out, I added 3 dummy posts. So far so good, but I can’t seem to find an option to shorten the maximum length of the Text excerpts. The excerpts are way too long. Is there any solution to set a maximum character limit?

Here’s a screenshot to show you what I mean: https://imgur.com/a/gfSGI3G

Thank you and kind regards

Ticket