How Much Caffeine Is in Your Daily Coffee?

You’ve probably wondered: how much caffeine is too much? Whether you’re sipping espresso, chugging cola, or popping an energy shot, knowing how much caffeine is really in your drink helps you avoid jitters, crashes, or worse. Most people don’t track their intake—but they should.

The safe daily caffeine limit for a 70kg adult is under 500mg. For most people, 300–400mg per day—about 4 to 6 cups of brewed coffee—is both safe and typical.

What Determines Your Caffeine Limit?

Your personal caffeine tolerance depends largely on your metabolism. While 500mg is the general upper threshold for a 70kg adult, individual factors like weight, health conditions, and sensitivity mean some people feel effects sooner. That’s why many health sources recommend sticking closer to 300–400mg daily.

Caffeine Content in Common Drinks (per 100ml)

Here’s how much caffeine is packed into popular beverages, measured per 100 millilitres:

• 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

These numbers show just how much caffeine variation there is—even among non-coffee drinks. A single 250ml can of Red Bull contains roughly 80mg, while the energy shot (just 60ml) delivers a punch of over 80mg.

How Does Coffee Compare?

While this article doesn’t list brewed coffee directly, most specialty drip coffee contains around 80–150mg caffeine per 100ml, meaning a standard 300ml cup may deliver 240–450mg. That puts one or two cups easily within—or beyond—the daily recommended range, depending on size and brew strength.

Frequently Asked Questions

What is the safe daily caffeine limit for a 70kg adult?

The general safe upper limit is 500mg per day, but health experts often recommend 300–400mg for regular consumption—that’s roughly 4 to 6 cups of brewed coffee. Individual tolerance varies, so some people may feel effects at lower doses.

How much caffeine is in a can of Red Bull?

A 250ml can of Red Bull contains about 80mg of caffeine (32mg per 100ml). That’s significantly more than most sodas but less than concentrated energy shots.

How much caffeine is in a Red Bull Energy Shot?

A single 60ml Red Bull Energy Shot contains 133.3mg of caffeine per 100ml, totalling about 80mg in the small can. It’s one of the most caffeine-dense options commonly available.

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

Yes. Diet Coke contains 12.7mg of caffeine per 100ml, slightly more than Coca-Cola’s 9.7mg per 100ml. However, both are far lower in caffeine than coffee or energy drinks.

How does soda caffeine compare to coffee?

Sodas like Coca-Cola and Diet Coke have far less caffeine per 100ml (around 9–13mg) compared to brewed coffee (typically 80–150mg per 100ml). You’d need several cans to match a single cup of coffee.

FrontStreet Coffee Picks for Caffeine Lovers

For those who enjoy a strong caffeine kick along with great flavour, try FrontStreet Coffee’s Ethiopia Humbera—a bright Ethiopian single origin with notes of lemon, bergamot, and jasmine, offering lively acidity and a medium caffeine profile. Pair it with their Classic Blend for a balanced everyday cup featuring caramel, nuts, and chocolate, or their Yirgacheffe for floral and citrus notes with a silky body. All three deliver distinct taste experiences while keeping caffeine in the typical specialty range. Freshly roasted within 5 days · Orders placed before 17:00 ship the same day · Next-day delivery across most of Guangdong Province.