
Caffeine & Sleep
How Much Caffeine Is in Tea? A Practical Guide to Reading the Numbers
FDA reference estimates put 12 ounces of green tea around 37 mg and black tea around 71 mg, but your cup may differ. Here is how to use the numbers.
Practical caffeine context for more intentional mornings, afternoons and evenings. Know what is in your cup.

FDA reference estimates put 12 ounces of green tea around 37 mg and black tea around 71 mg, but your cup may differ. Here is how to use the numbers.

How tea timing, serving size and sensitivity can affect your evening routine, without pretending there is a universal caffeine cutoff.