Originally Posted by TheLegacy

The ideal length for the meta title is 50–60 characters. Google starts to cut off the title tag after 50-60 characters.

The best recommendation for how long should a meta description be is to keep your descriptions somewhere between 150-160 characters

H1 The general rule of thumb is 70 characters or under.
H2 They can be as long or as short as necessary, but should include keywords to reinforce your main heading topic (h1 tag). Be careful though, if your H2 tags are too long, search engines may have trouble appropriately indexing them