Tea and coffee both deliver caffeine, but the experience of each rarely feels the same — and the reason comes down to more than just quantity.
How Much Caffeine, Really
A cup of coffee typically contains 95–200mg of caffeine, while brewed tea generally ranges from 15–70mg depending on type — green and white tea on the lower end, black tea and pu-erh higher, and herbal tisanes typically caffeine-free entirely.
The L-Theanine Difference
Tea leaves naturally contain L-theanine, an amino acid known to promote calm alertness. Combined with caffeine, it tends to produce a steadier, more sustained sense of focus, without the sharp spike and crash more common with coffee.
Steeping Time Changes Everything
Unlike coffee, tea's caffeine content isn't fixed — longer steeps and hotter water pull out more caffeine, while shorter, cooler infusions pull out less. This means you can meaningfully adjust a tea's caffeine strength just by changing how you brew it.
Neither drink is inherently “better” — they simply deliver energy differently, and tea's gentler curve is part of why so many drinkers reach for it throughout the day rather than just in the morning.