I was just curious as to what and how the caffeine content of the various Coca-Cola coke products differed. Especially the difference between ‘Diet Coke‘ and ‘Coke Zero‘. So I did some research and put together this little chart.
Data was gathered from the Coca-Cola and RedBull sites and values are approximate.
| Product | Serving size (ml) | Caffeine per serving (mg) | Caffeine per 100ml | |
|---|---|---|---|---|
| Mug of filter coffee | 260 | 140 | 54 | |
| Mug of instant coffee | 260 | 100 | 38 | |
 |
Can of RedBull | 250 | 80 | 32 |
| Mug of Tea | 260 | 70 | 27 | |
| Bar of chocolate (*50mg) | 50 | 50 | 100 | |
| 1 shot of espresso | 30 | 45 | 150 | |
 |
Can of Diet Coke | 330 | 42 | 13 |
 |
Can of Regular Coke | 330 | 32 | 10 |
 |
Can of Coke Zero | 330 | 32 | 10 |
 |
Can of Coke Life | 330 | 26 | 8 |