How much of your favorite drink is too much? How much could be dangerous?
Use the calculator below to find your personal daily safe maximum and lethal dosage based on your weight.
☕ Caffeine Calculator
What’s my daily safe maximum?
Health authorities recommend consuming no more than 200 mg of caffeine at a time.
However, your safe limit depends on your weight. Use our calculator to see:
- How many servings of your favorite drinks are safe per day
- How much caffeine that equals in mg
⚠️ Recommendations are for adults 18 and older. Children and teens should consume much less caffeine.
What are the most popular caffeinated drinks?
While this calculator doesn’t track usage, based on general consumption, the most popular drinks include:
Coffee, Espresso, Red Bull, Monster, Coca-Cola Classic, Mountain Dew, Dr Pepper, Rockstar, Diet Coke
These are common benchmarks if you want to compare your own intake.
Do any foods contain caffeine?
Yes! Many foods contain caffeine, such as:
- Chocolate & cocoa
- Energy/protein bars
- Certain frozen desserts
- Supplements and medications
These are included in our database, but remember not all foods with caffeine are in the calculator yet.
Can caffeine really be dangerous?
Yes. While moderate caffeine consumption is safe for most adults, very high doses can be harmful or even lethal.
Using our calculator, you can see how many servings it would take to reach dangerous levels based on your weight.
Overconsumption can cause nausea, heart palpitations, and more severe health issues.
Concluding Text:
By understanding your own limits and the caffeine content in drinks, you can enjoy your favorite beverages safely without putting your health at risk.
Tips for using the calculator effectively
To get the most accurate and useful results from our calculator, follow these simple steps:
- Start typing the name of your drink. Suggestions will appear automatically.
- Enter your weight in kilograms (kg) or pounds (lbs).
- Click Calculate to see your safe daily maximum and lethal dosage.
- Use the results to stay within safe limits, especially for highly caffeinated drinks.
Pro Tip: Remember that serving sizes vary, so even drinks with moderate caffeine can add up. Always check the serving size listed in the calculator and adjust your intake accordingly.
The Strongest Coffees You Can Find
Some coffees pack a serious punch in caffeine content. If you’re a true coffee lover or need that extra boost, these are the ones to watch:
- Death Wish Coffee – Marketed as the world’s strongest coffee, a single 12 fl oz cup contains roughly 660 mg of caffeine. Perfect for serious energy seekers, but not for daily consumption.
- Biohazard Coffee – With over 500 mg per 12 fl oz cup, it’s extreme even for coffee enthusiasts.
- Black Insomnia Coffee – A bold choice with 475–500 mg per cup, popular among those who need a sharp, long-lasting kick.
- Espresso Shots (Multiple) – A single shot has ~63 mg of caffeine, but multiple shots in a drink can quickly add up. A triple shot latte already puts you above the typical safe single-dose limit.
⚠️ Remember: Even though these coffees are available, overconsumption can lead to heart palpitations, jitters, and other health risks. Always calculate your personal limits.
Coffees with the Lowest Caffeine Content
Not all coffees are extremely strong. Some are great for those who want flavor without too much caffeine:
- Decaf Coffee – Contains only 2–5 mg of caffeine per 8 fl oz cup, letting you enjoy coffee flavor with minimal stimulation.
- Half-Caf Blends – A mix of regular and decaffeinated beans; roughly 50–60 mg per 8 fl oz cup.
- Light Roast Coffees – Surprisingly, some light roasts have slightly less caffeine than darker roasts depending on the bean and brewing method.
- Cold Brew (Short Serving) – Concentrated cold brews can be high in caffeine, but a small 4–6 fl oz serving often keeps caffeine intake moderate.
Tip: Even low-caffeine coffees can add up if consumed in large volumes, so check serving sizes carefully.
Fun Facts About Caffeine in Drinks
- Energy drinks like Red Bull or Monster contain roughly 80–160 mg per can, similar to a standard cup of coffee.
- Soda is lower in caffeine, but consuming multiple cans a day adds up quickly.
- Chocolate and cocoa contain small amounts of caffeine. Dark chocolate usually has more than milk chocolate.
- Supplements and pre-workout drinks can sometimes have more caffeine than a cup of coffee, so always read labels.
- Caffeine tolerance varies by person; regular drinkers may feel less impact than occasional drinkers.
Fun tip: Your body metabolizes caffeine differently depending on genetics, age, and other factors. This is why our calculator uses weight as a primary factor for safe intake.