Aspire Energy vs Coca-Cola Classic: which has more caffeine?

Aspire Energy has more caffeine than Coca-Cola Classic: 80mg vs 34mg in the same 12 oz can. That is a 46mg gap, and since the cans match, the per-serving number is the whole story.

These are different categories of drink, which changes how the caffeine arrives. Energy drinks and sodas list an exact number because caffeine is a measured additive; brewed drinks vary with the beans and the brew, so their figures are compiled averages. The numbers here are the standard published values for each.

Aspire Energy vs Coca-Cola Classic: the numbers

Sources: Aspire Energy's figure is verified in our Aspire Energy caffeine guide against Aspire / Caffeine Informer (source); Coca-Cola Classic's figure is verified in our Coca-Cola Classic guide against Caffeine Informer (source).

Which one should you pick?

Pick Coca-Cola Classic when you want the lighter dose or a slower ramp, and Aspire Energy when you actually need the bigger hit and know your tolerance. If you are stacking either with other caffeinated drinks through the day, run the math against the 400mg reference rather than guessing.

For context, the FDA cites 400mg of caffeine a day as an amount generally not associated with negative effects in healthy adults. Tolerance and health vary, so treat these numbers as information, not advice.

Related reading

• Aspire Energy: the full caffeine guide
• Coca-Cola Classic: the full caffeine guide
• The verified caffeine database
• Every drink compared: the comparisons index
• Compare any two of 120+ drinks

FAQ

Does Aspire Energy or Coca-Cola Classic have more caffeine? Aspire Energy: 80mg per 12 oz can versus 34mg per 12 oz can for Coca-Cola Classic.

Which is stronger per ounce? Aspire Energy, at about 6.7mg per fluid ounce versus 2.8mg for Coca-Cola Classic.