How Much Caffeine Is in Your Daily Drink?

Ever wondered how much caffeine you’re really drinking every day—from your morning coffee to that afternoon cola? Whether you're sensitive to stimulants or just curious, knowing how much caffeine is in everyday beverages helps you make better choices without guesswork.

For a typical 70kg adult, up to 500mg of caffeine per day is generally safe, though 300–400mg (about 4–6 cups of coffee) is the widely recommended intake. But caffeine amounts vary wildly between drinks. Here's exactly how much is in your favorite beverages.

Caffeine in Common Beverages (Per 100ml)

Below are the measured caffeine levels in 100 milliliters of popular drinks, based on available data. These numbers help you compare across categories, whether you're sipping soda or grabbing an energy shot.

What Counts as a Safe Daily Caffeine Intake?

Caffeine affects everyone differently, based on factors like body weight, metabolism, and tolerance. For most people, especially those weighing around 70kg, consuming less than 500mg of caffeine per day is considered safe. That said, health experts often recommend sticking to a more moderate range: roughly 300–400mg daily, or about 4 to 6 standard cups of coffee.

Why Caffeine Amounts Vary So Much

Not all caffeinated drinks are created equal. A can of cola may have under 10mg per 100ml, while a concentrated energy shot can pack over 130mg in the same volume. The form, serving size, and purpose of the drink—stimulant boost versus refreshment—all influence how much caffeine is included. That’s why a single energy shot can exceed the caffeine in a full can of soda or cup of coffee.

Frequently Asked Questions

How much caffeine is safe for a 70kg adult per day?

Up to 500mg of caffeine per day is generally considered safe for a 70kg adult. However, the recommended moderate intake is around 300–400mg daily, equivalent to roughly 4–6 cups of coffee.

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

Coca-Cola contains 9.7mg of caffeine per 100ml. A standard 330ml can has approximately 32mg of caffeine total—not as high as many people assume, but still a contributing factor to daily intake.

Which energy drink has the most caffeine per 100ml?

Red Bull Energy Shot has the highest caffeine concentration at 133.3mg per 100ml. In comparison, regular Red Bull has 32mg per 100ml, making the shot over four times more concentrated.

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. That makes Diet Coke slightly more caffeinated by volume, though the difference is small per can.

How much caffeine is in a Red Bull?

Red Bull contains 32mg of caffeine per 100ml. A standard 250ml can of Red Bull has about 80mg of caffeine total, enough to deliver a noticeable stimulant effect.

Why does caffeine content vary so much between drinks?

Caffeine levels depend on the drink’s purpose, formulation, and target market. Sodas are designed for mild stimulation and flavor, while energy drinks and shots aim to deliver a rapid, high-impact caffeine dose in small volumes.

Recommended FrontStreet Coffees for Caffeine Lovers

For those who enjoy a strong caffeine kick alongside great flavor, try FrontStreet Coffee’s Ethiopia Humbera—a bright, juicy Ethiopian single origin with notes of citrus and floral tones, perfect for an energizing pour-over. If you prefer a balanced espresso, their Classic Blend offers chocolatey richness with a sturdy caffeine backbone. Both are freshly roasted to highlight their natural vibrancy. Freshly roasted within 5 days · Orders placed before 17:00 ship the same day · Next-day delivery across most of Guangdong Province.