A standard 8.4 oz can of Red Bull contains 80 mg of caffeine, roughly the amount found in a single cup of home-brewed coffee.

A small latte (8-12 oz) usually has one espresso shot totaling roughly 63 mg of caffeine, or 75 mg at Starbucks.

A small (16 oz) Dunkin Iced Coffee contains roughly 198 to 237 mg of caffeine, depending on the source.

A standard 8-ounce small coffee contains about 95 mg of caffeine on average, though most coffee shops serve 12-ounce cups with roughly 140 mg.

A single 1-ounce shot of espresso contains about 63 mg of caffeine, though the exact amount varies by bean origin, roast level, and brewing technique.

A standard 12-cup pot of coffee contains about 710 mg of caffeine, but the actual amount can range from 710 to over 1,200 mg depending on the beans.

Nespresso pod caffeine content ranges from about 40 mg to 200 mg per serving, depending on the line and capsule type.

A standard K-Cup contains between 75 and 150 mg of caffeine per 8-ounce serving, though the exact amount varies by brand, roast, and blend.

Brewed from a standard bag, an 8-ounce cup of green tea typically delivers 30 to 50 mg of caffeine.

An 8-ounce cup of green tea typically contains between 29 and 50 milligrams of caffeine, depending on the variety, brewing time.