how much caffeine in tea

How Much Caffeine In Tea? The caffeine content in tea varies widely depending on the type.Here’s the quick breakdown per 8-oz (240 ml) cup: Black tea: 40–70 mg Green tea: 20–45 mg White tea: 15–30 mg Oolong tea: 30–50 mg Herbal tea: 0 mg (naturally caffeine-free) Matcha: 60–80 mg Chai (with black tea): 40–60 mg…