A standard 12-ounce (355 ml) can of regular Coca‑Cola has about 34 mg of caffeine , which is considered a moderate amount compared with many teas and coffees.

Quick Scoop: Caffeine in Coke

  • Regular Coke (12 oz can): about 34 mg caffeine.
  • Smaller 7.5 oz mini‑can: roughly low‑20s mg (around 21–23 mg).
  • Larger 20 oz bottle: just over 50 mg (around 53 mg).
  • Diet Coke: higher, around 42–46 mg per 12 oz.
  • Caffeine‑Free Coke: 0 mg (all the flavor, none of the buzz).

How that compares

  • Typical brewed coffee (8 oz): roughly 95–200 mg caffeine.
  • Green or black tea (8 oz): roughly mid‑20s to 70 mg.

So a can of Coke gives you a mild caffeine lift compared with coffee, and more in the range of a light tea.

If you’re watching your daily total, remember to count coffee, tea, energy drinks, chocolate, and “hidden” caffeine like some meds too.

TL;DR: One can of Coke has ~34 mg caffeine, which is on the low side compared with most coffees and many energy drinks.

Information gathered from public forums or data available on the internet and portrayed here.