How Much Caffeine Is in Your Daily Drinks?

You’ve felt it—the jitters after one too many cups, or the sleepless night after an energy drink. But how much caffeine is actually too much? And how does your go-to soda or shot compare to a regular cup of coffee?

For a typical 70kg adult, up to 500mg of caffeine per day is considered safe, though 300–400mg (around 4–6 cups of coffee) is the widely recommended intake. That’s the science—but what about the numbers in your everyday drinks?

What Determines Your Safe Caffeine Limit?

The safe amount of caffeine depends largely on your metabolism, body weight, and individual sensitivity. For most people weighing around 70kg, keeping daily intake under 500mg is the upper limit, while 300–400mg is the sweet spot advised by health experts. That generally translates to roughly 4–6 standard cups of brewed coffee per day.

Caffeine Content in Common Drinks (Per 100ml)

Here’s how your favorite beverages stack up when it comes to caffeine content, measured per 100 milliliters:

• Coca-Cola: 9.7 mg
• Diet Coke: 12.7 mg
• Lift Plus (energy drink): 14.5 mg
• Pepsi Max: 19.4 mg
• Diet Pepsi: 10.1 mg
• Red Bull: 32 mg
• Red Bull Energy Shot: 133.3 mg

That means an average 250ml can of Coca-Cola contains around 24mg of caffeine, while the same amount of Red Bull packs about 80mg. The tiny 60ml Red Bull Energy Shot? A punchy 80mg—over four times the caffeine of a can of Diet Coke per 100ml.

Why These Numbers Matter

Knowing the caffeine content in common drinks helps you make informed choices—whether you’re trying to limit intake, avoid sleep disruption, or just understand why that afternoon soda left you wired. Energy drinks and shots, in particular, can deliver caffeine levels far beyond what you’d expect from their size.

Frequently Asked Questions

What is the safe daily caffeine limit for an adult?

For a 70kg adult, up to 500mg of caffeine per day is considered safe, though health experts typically recommend staying closer to 300–400mg—about 4–6 cups of coffee.

How much caffeine is in a can of Coca-Cola?

A 100ml serving of Coca-Cola contains 9.7mg of caffeine. A standard 330ml can has approximately 32mg of caffeine.

How much caffeine is in Red Bull?

Red Bull contains 32mg of caffeine per 100ml. A standard 250ml can has about 80mg of caffeine. The smaller Red Bull Energy Shot (60ml) contains 133.3mg per 100ml, totaling about 80mg in the whole shot.

Is Diet Coke higher in caffeine than regular Coca-Cola?

Yes. Diet Coke contains 12.7mg of caffeine per 100ml, compared to 9.7mg in regular Coca-Cola.

Why does the Red Bull Energy Shot have so much caffeine?

The Red Bull Energy Shot is a concentrated beverage (60ml) with 133.3mg of caffeine per 100ml, equating to about 80mg in a single shot—far more than most sodas or even larger energy drinks.

Recommended FrontStreet Coffees for Caffeine Lovers

For those who enjoy a strong caffeine kick alongside quality coffee, try FrontStreet Coffee’s Ethiopia Humbera for bright, juicy notes of red berries and citrus; their Yirgacheffe offers floral and lemony brightness with medium caffeine intensity; or their Classic Blend for a balanced, everyday roast with chocolatey depth. All deliver smooth yet bold experiences. Freshly roasted within 5 days · Orders placed before 17:00 ship the same day · Next-day delivery across most of Guangdong Province.