A regular can of classic Coca‑Cola has about 39 grams of sugar in a standard 12 oz (355 ml) can, and about 35 grams of sugar in a 330 ml can.

Quick Scoop: Sugar in a Coke

  • 12 oz (355 ml) Coke: about 39 g sugar.
  • 330 ml Coke (common outside the US): about 35 g sugar.
  • That’s roughly 9–10 teaspoons of sugar in a single can.

Health guidelines in many countries suggest that one can of Coke alone can meet or exceed the recommended daily limit of “free sugars” for an adult.

Why this is a big deal

  • Many health agencies recommend keeping added sugars to around 25–30 g per day for adults, so a single can of Coke can already be over that line.
  • Regular intake of high‑sugar drinks is linked with higher risks of weight gain, type 2 diabetes, and tooth decay over time.

Different sizes of Coke (classic)

From Coca‑Cola’s own nutrition info:

  • 7.5 oz mini can: 25 g sugar
  • 8 oz: 26 g sugar
  • 8.5 oz: 28 g sugar
  • 12 oz: 39 g sugar
  • 16 oz: 52 g sugar

So the short, practical answer to “how many grams of sugar in a Coke?” is:
Expect roughly 35–39 grams of sugar per regular can, depending on whether it’s 330 ml or 12 oz.

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