A standard cup of brewed tea usually lands between 15–70 mg of caffeine, depending on the tea type and how you brew it.

Most decaf coffee lands between about 2 and 15 mg of caffeine per 8-oz cup, not zero.

A typical 8-oz mug of brewed black tea lands around 40–70 mg of caffeine, with leaf style and steep time pushing it up or down.

A typical 8-oz mug of brewed green tea lands at 25–45 mg of caffeine, while matcha and long steeps can run higher.

A typical 8-oz cup of decaf coffee has 2–15 mg of caffeine, with the exact amount shifting by brand, bean, and how you brew it.

Most matcha made with 1–2 g of powder lands near 30–90 mg of caffeine, and a bigger scoop can push it higher.

An 8-oz mug of brewed coffee often lands near 80–100 mg of caffeine, with the final number shifting with bean type, grind, and brew style.

A 12-fl-oz can of regular Mountain Dew has 54 mg of caffeine in the U.S.

Most roasted coffee beans land around 10–20 mg of caffeine per gram, so an espresso dose often starts near 60–80 mg before brewing losses.

Most pregnant adults can keep caffeine at 200 mg per day or less from all sources, including coffee, tea, cola, chocolate, and meds.