I stumbled across this. Probably been around a while, who knows. Anyway, simply go to Google or in the address bar of Chrome, start typing your query like “add to calendar meeting friday 1pm to 3pm” and start your search. You’ll be presented with a Create event dialog and once you click the link an event will be created in your Google calendar. You’ll then have the ability to edit your entry and provide more details.
Typing dates works too. For example: “add to calendar meeting june 3rd 1pm to 3pm”. Doing “add to calendar meeting tonight” gave me an entry dialog of 7:00 to 7:30. Still, half the work was done.