One 12-fl-oz can of Diet Mountain Dew contains 54 mg of caffeine.

A standard black tea bag brewed in 8 oz of water lands near 40–70 mg of caffeine, shaped most by steep time, water heat, and leaf cut.

A standard 12-oz (355 ml) can of Coca-Cola has 34 mg of caffeine.

Most caffeine pills contain 100–200 mg of caffeine per tablet, with some products offering smaller or split doses.

A standard 20-oz bottle lands near 77 mg of caffeine when you scale Coca-Cola’s 46 mg per 12-oz figure to bottle size.

A 20-oz bottle of Coca-Cola lands near 57 mg of caffeine, while a 12-oz can has 34 mg, so size is the main driver.

A 20-oz bottle of Mountain Dew has 91 mg of caffeine, while a 16.9-oz bottle has 77 mg and a 12-oz can has 54 mg.

A typical café latte lands around 60–130 mg of caffeine, mainly set by how many espresso shots are in your cup.

A typical 6-ounce brewed coffee lands near 70–75 mg of caffeine, with the exact amount shifting with beans, grind, and brew strength.

An 8-ounce brewed coffee often lands around 80–100 mg of caffeine, with some cups dropping near 30 mg or rising past 200 mg.