Bang has the most caffeine of the three: 300mg per 16 oz can, against 160mg per 16 oz can for Monster and 80mg per 8.4 oz can for Red Bull. It also leads per ounce, at roughly 18.8mg to 9.5mg, so the order holds whichever way you count.
Monster vs Red Bull vs Bang: the numbers
| Monster | Red Bull | Bang | |
|---|---|---|---|
| Caffeine per serving | 160mg per 16 oz can | 80mg per 8.4 oz can | 300mg per 16 oz can |
| Caffeine per fl oz | 10mg | 9.5mg | 18.8mg |
| Servings to reach 400mg (FDA context) | 2.5 | 5.0 | 1.3 |
Sources: Monster is 160mg per 16 oz can per Caffeine Informer (source), and the figure is carried in our Monster guide; Red Bull is 80mg per 8.4 oz can per Caffeine Informer (source), and the figure is carried in our Red Bull guide; Bang is 300mg per 16 oz can per Caffeine Informer (source), and the figure is carried in our Bang guide.
Per can or per ounce: pick the number that matches how you drink
The serving sizes here are different, so the two rankings answer different questions. Per serving tells you what one purchase delivers. Per fluid ounce tells you how concentrated each sip is, which is what matters if you nurse a large one slowly or split a can. Bang is the densest of the three at about 18.8mg per ounce; Red Bull is the lightest at 9.5mg.
The three head-to-head pages
Each pairing has its own page with the full math:
Which one should you pick?
Take Red Bull when you want the smallest dose of the three, Monster when you want a middle number without thinking about it, and Bang when you actually want the 300mg and know how you handle it. If you drink more than one caffeinated thing a day, the useful move is adding the day up against the 400mg reference rather than judging each drink alone.
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
- The verified caffeine database
- Every drink compared: the comparisons index
- Compare any two of 120+ drinks
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Gear from this guide
FAQ
Which has the most caffeine, Monster, Red Bull or Bang? Bang, at 300mg per 16 oz can. Monster has 160mg per 16 oz can and Red Bull has 80mg per 8.4 oz can.
Which of the three is strongest per ounce? Bang, at about 18.8mg per fluid ounce, ahead of Monster at 10mg and Red Bull at 9.5mg.
How many Bang servings reach the FDA 400mg reference? About 1.3 of them, at 16 oz can each. The FDA cites 400mg a day as an amount generally not associated with negative effects in healthy adults. This is information, not advice.
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