Ever wonder just how much caffeine is in different drinks? Then check out the caffiene database.
For how much more caffiene do you find in coffee vs coke?
According to the database CocaCola Classic has 2.83 mg of caffiene per ounce. Drip coffee has 18.13 mg of caffiene per ounce on average (coffee can vary quite a bit).
It is also interesting to note that Diet Coke has more caffiene (3.75 mg/oz) than classic coke.