Jolt Cola vs Diet Coke: which has more caffeine?

Jolt Cola has more caffeine than Diet Coke on both counts: 200mg per 16 oz can against 46mg per 12 oz can, and about 12mg per fluid ounce against 4. The serving sizes differ, so the table below shows both ways of counting.

Jolt Cola vs Diet Coke: the numbers

Sources: Jolt Cola's figure is verified in our Jolt Cola caffeine guide against Caffeine Informer (source); Diet Coke's figure is verified in our Diet Coke guide against Caffeine Informer (source).

The concentration gap is the striking part: Jolt Cola packs roughly 3 times the caffeine per ounce. Sipping speed matters at that density; a 16 oz can finished in minutes hits differently than the same milligrams spread over a slow cup.

Which one should you pick?

Pick Diet Coke when you want the lighter dose or a slower ramp, and Jolt Cola 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

• Jolt Cola: the full caffeine guide
• Diet Coke: the full caffeine guide
• The verified caffeine database
• Every drink compared: the comparisons index
• Compare any two of 120+ drinks

FAQ

Does Jolt Cola or Diet Coke have more caffeine? Jolt Cola: 200mg per 16 oz can versus 46mg per 12 oz can for Diet Coke.

Which is stronger per ounce? Jolt Cola, at about 12.5mg per fluid ounce versus 3.8mg for Diet Coke.