Page Title Length Testing Tool That Looks At Object Width
https://www.upbuild.ioA nice little SEO tool to have in your SEO tool kit. The challenge in page title optimization is finding the right balance between the keywords you want to target, the message you want to convey, and the limitations on the overall page title length, this tool takes a lot of the guesswork out of the picture.
You can read about the science behind it here or just start using the tool here.
Update 06/10/2020:
Here is another tool that helps you figure out pixel with for titles, descriptions on Google and Bing from Paul Shapiro.