Almost! A pint is 2 cups. So 2/3 of a pint is actually 1 1/3 cups. That’s a lot more than 2/3 cup. Don’t mix those up unless you want soup that tastes like regret. Stick with the cup measurement for your sanity.
Remember: a pint’s a pound the world around—except when it’s not. So just use your measuring cup and call it a day.
When You Forget Mid-Recipe
It happens. You’re in the zone, you’ve added salt instead of sugar (it’s fine, we won’t tell), and now you’re blanking on 2/3. Google “2/3 cup in tablespoons” on your phone. Or just look at this article you’re reading—I saved you a search. You’re welcome.
And if all else fails, eye it. Fill a cup 2/3 of the way. Your recipe will forgive you. The universe will not implode. The cookies will still be chewy.