By Kaivan Dave
Kaivan Dave - Author

Kaivan Dave

Marketing Growth Consultant

Marketer, passionate branding expert, and a leader in the direct-to-consumer space 

Last updated - July 4th, 2023 | 6 min read

We have strict editorial integrity policies that every article goes through before being posted on our site. We also understand everyone has different needs and goals, so please consult a doctor if you take any advice found here, especially as what works for one person might not work for another!

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Caffeine can both be good or bad for you depending on how much is consumed per day. Typically, most people are consuming caffeine in excess which leads to many problems. If you are someone who enjoys drinking caffeinated beverages throughout the day then consider yourself lucky that coffee, tea, and other caffeinated beverages do not have any harmful effects when consumed in moderation. Well, what is considered moderation? Find out more in the FAQ section below. Let’s dive right into the caffeine calculator!

starImage Caffeine Daily Limit Calculator starImage

The Maximum amount of caffeine you should consume per day is..

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The Maximum amount of caffeine you should consume per day is..

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Here how it works:

  1. Take your body weight (Let’s say 220 lbs)
  2. Divide that number by 2.2 (220 / 2.2 = 100)
  3. Take the number found in step 2 above, and multiply it by 3 (100 x 3 = 300)
  4. This number is the maximum amount of caffeine in milligrams that you should consume.

So in this case, our calculator shows that if you’re 220lbs, you should not be drinking more than 300mg of caffeine per day.

A huge shoutout to Caroline Klinger, MS, RD aka Fuelingthefuture_ on TikTok for this calculation counter.

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Today, more and more people are turning to caffeine for energy boosts. Many people drink caffeinated beverages throughout the day in order to stay focused on their jobs or studies. Others use caffeine as a way to lose weight by taking in fewer calories when drinking coffee or tea with their meals instead of soda or juice. Some enjoy a protein coffee to achieve lean muscle mass, weight loss effects, or to gain energy!

It has been found that most adults are taking in about 2-3 times too much caffeine per day on average! Caffeine consumption of this nature can lead to many problems including insomnia, irritability, rapid heart rate, dehydration, increased blood pressure, irregular heartbeat, nausea, and vomiting. It is important that if you are choosing to drink caffeinated products then do so in moderation in order to keep yourself healthy!

The FDA recommends that healthy adults have a maximum of 400 milligrams of caffeine per day. The majority of caffeinated beverages contain around 100 mg so one would need to drink several servings to reach this limit.

One would need to drink several servings to reach this limit. However, there are some side effects of too much caffeine depending on your age. Children should avoid caffeine entirely because it can lead to bedwetting, depression, sleep issues, hyperactivity, concentration problems, malnutrition, poor brain development, and heart rhythm changes*. Caffeine also may interfere with certain medications so it is important that if you are taking prescribed medication then be sure to check with your doctor or pharmacist if it is safe to drink caffeine alongside that medication.

If you are pregnant, breastfeeding, taking certain medications, or have liver disease then it is recommended that you avoid caffeine altogether to prevent severe side effects. More on that in the FAQ below.

Some side effects of too much caffeine in adults include insomnia, irritability, nausea, vomiting, increased blood pressure, irregular heartbeat, and rapid heart rate*. So after reading this article about the caffeine limit calculator you should now know how much caffeine is good and bad for you so be sure to enjoy your favorite caffeinated beverages responsibly! No caffeine overdose. Only moderate consumption.

Frequently Asked Questions

How does Caffeine work in the body?

Caffeine is a stimulant. It is a naturally occurring chemical found in coffee beans and other foods, drinks, and medicines. It can also be artificially synthesized for use in certain medicines. Consumption of caffeine increases alertness and activates the nervous system, temporarily warding off drowsiness and restoring mental alertness. This effect begins approximately 15 minutes after consumption but may take up to 2 hours before experiencing a full effect.

According to Cleveland Clinic, caffeine has a half life upto 6 hours. That means that after consuming caffeine at 8 AM one morning it could potentially take you until 2pm before the body eliminates 50% of it!

Caffeine was approved as a food additive in 1958 because it has been found to dissolve easily in water and mix well with other ingredients. Caffeine is often associated with coffee, due to its high concentration in coffee beans.

However, caffeine can be found in other ingredients that are commonly added to many products consumed every day including tea leaves, guarana seeds, cocoa beans, kola nuts, and yerba mate leaves. These are all considered dietary supplements because they contain naturally occurring levels of caffeine.

How much caffeine is safe to consume daily?

The FDA says that 400 mg of caffeine each day is the limit for healthy people over 17 years old, and this equals about four (8 fl. oz.) cups of coffee, 10 (8 fl. oz.) cans of cola, or simply about a couple of Monster Energy drinks! It's important not to exceed this amount because consuming more than 400mg can lead to unpleasant side effects such as jitteriness, insomnia, and heart palpitations, among others.

How many cups of coffee can I have per day?

How long does caffeine last calculator will help you figure out how many cups of coffee you can have each day without being overstimulated, experiencing negative health effects from caffeine, or having a heart attack.

The amount of caffeine that is safe to consume in a day varies from person to person. But if you're a heavy coffee drinker who has a high tolerance, don't take it for granted! Much like any other drug, too much caffeine over time could be bad for your health and could even cause death*.

Fortunately, there are steps that you can take to prevent the negative health effects of caffeine.

For example, when you're consuming caffeine in high amounts it's suggested that you take a break every once in a while to allow your body to adjust and lower your tolerance. However, be careful if you go cold turkey, and completely stop drinking caffeine. Caffeine withdrawal is real, and can cause irritability, nausea, and headaches. Therefore, gradually taper off once in a while.

It's also important to keep in mind how different types of caffeinated products affect people differently - some might get jittery or suffer from palpitations whereas others may feel nothing at all. That's why it's very important that you know exactly what affects you personally!

Keep in mind that everyone's tolerance for caffeine is different so even though some people can handle much more than others, remember that everyone has a limit. This caffeine calculator will help you know how much caffeine is safe for you, so it's important to be aware of your own limits!

How many cups of coffee can I have per day?

How long does caffeine last calculator will help you figure out how many cups of coffee you can have each day without being overstimulated, experiencing negative health effects from caffeine, or having a heart attack.

The amount of caffeine that is safe to consume in a day varies from person to person. But if you're a heavy coffee drinker who has a high tolerance, don't take it for granted! Much like any other drug, too much caffeine over time could be bad for your health and could even cause death*.

Fortunately, there are steps that you can take to prevent the negative health effects of caffeine.

For example, when you're consuming caffeine in high amounts it's suggested that you take a break every once in a while to allow your body to adjust and lower your tolerance. However, be careful if you go cold turkey, and completely stop drinking caffeine. Caffeine withdrawal is real, and can cause irritability, nausea, and headaches. Therefore, gradually taper off once in a while.

It's also important to keep in mind how different types of caffeinated products affect people differently - some might get jittery or suffer from palpitations whereas others may feel nothing at all. That's why it's very important that you know exactly what affects you personally!

Keep in mind that everyone's tolerance for caffeine is different so even though some people can handle much more than others, remember that everyone has a limit. This caffeine calculator will help you know how much caffeine is safe for you, so it's important to be aware of your own limits!

How much caffeine is in caffeinated beverages?

The amount of caffeine in coffee depends on the type of bean used, how it's prepared and how concentrated it is. The average cup of brewed coffee contains about 100 mg, although there are many varieties that have more than 200mg!

A standard "energy shot", like 5-Hour Energy, has around 215 milligrams of caffeine for every serving (2 fluid ounces). Energy drinks usually contain around 80-150 milligrams per 8 ounces serving so drinking one or two energy drinks daily would be within the daily limit of caffeine intake as long as you don't exceed the suggested serving sizes on each container.

There are some additional risks to be aware of if you're drinking too much caffeine. Caffeine is a stimulant that can increase your heart rate, which can cause cardiovascular problems like heart palpitations, irregular heartbeat, and chest pain. It can even cause a heart attack in some cases! Consuming too much caffeine can also lead to increased anxiety and restlessness, which means you'll take longer to sleep and feel tired the next morning.

It's also important to remember that caffeine can be very addictive. If you're drinking coffee, tea, or energy drinks on a daily basis and feel like cutting back, read about the withdrawal symptoms of caffeine: headache, irritability, and lethargy.

Energy Drinks and Caffeine Consumption

Energy drinks have a very high caffeine content because they combine natural caffeine from coffee beans as well as synthetic caffeine which is created in a lab.

Here are energy drinks and their caffeine levels:

– Find images + Caffeine levels in the caffeine calculator article we have published today

Some side effects of energy drinks include nervousness, restlessness, irritability, insomnia, headache nausea, heart palpitations (irregular heartbeat), and tremors (shakiness). But the most worrisome effect is that it may cause you to have an increase in your blood pressure which can lead to an increased risk of having a heart attack.

If you're going to drink energy drinks, then it's best that you understand the caffeine amount of each type and how much caffeine is too much for you. Additionally, energy drinks contain a lot of sugar and tons of artificial ingredients, so it is important to also read the sugar content for each drink.

The FDA has recently recommended more research on energy drinks as a concern as to whether or not they are safe for consumption.

Dangers of too much caffeine?

There are some people who suffer from chronic overconsumption, which means that they have been consuming large amounts of caffeine daily for weeks or months.

Caffeine has a half-life in the body of up to 6 hours, meaning that half of the amount consumed at 8 am could still be in your system at 2 pm. With this type of long-lasting effect, there are serious consequences when you're drinking too much coffee and tea on a regular basis. Chronic over-consumption can lead to caffeine intoxication, which is when you have more than 400 milligrams of caffeine in your body.

Caffeine toxicity can cause symptoms that are similar to poisonings, such as vomiting, palpitations, and tremors. Symptoms of caffeine overdose include abdominal pain, delirium, disorientation, diarrhea, dizziness/lightheadedness, excessive urination or diuresis, hallucinations, or neuromuscular tremors. If the body has too much caffeine it could suffer from cardiac arrest.

It's important to be aware that some medications also contain caffeine. Taking medication with even 50mg of caffeine could mean ingesting around 200 mg if you're sensitive to it - double the recommended daily intake! That's why it's also important to check the caffeine content of what you're taking.

How does it affect sleep?

Caffeine blocks adenosine receptors, which is a molecule that makes our bodies tired. This means that when we ingest lots of caffeine, our bodies won't be able to trigger the chemical reactions that send us signals to feel tired or sleepy. This is why many people experience alertness after drinking coffee or tea.

Adenosine builds up in our blood throughout the day before increasing at nighttime, which causes melatonin levels to increase and allows us to fall asleep naturally. When caffeine disrupts this process by blocking adenosine receptors, melatonin levels remain low and this causes difficulty falling asleep, insomnia, and sleep deprivation.

Can you drink coffee while pregnant?

While the American College of Obstetricians and Gynecologists recommends pregnant women to reduce their caffeine intake to as little as possible (lower than 200 mg or 2 cups per day), Dr. John Foxe, PhD, director, Del Monte Institute for Neuroscience, University of Rochester, recommends going decaf and trying to eliminate caffeine altogether.

This also depends on the side effects of going cold turkey and cutting out caffeine altogether, as it could cause withdrawal, irritability, stress and anxiety and they can have effects on a pregnancy. Although pregnant women have been advised to limit their caffeine intake in order to reduce their risk of miscarriage or preterm birth for many years, a new study suggests that pregnant women who consume any coffee during pregnancy may be more likely to have children who develop behavioral problems later in life.

Brain scans of children whose mothers drank caffeine while pregnant revealed abnormalities in circuits that could lead to behavioral disorders later in life, such as attention difficulty and hyperactivity, according to the researchers.

How do I cut down on caffeine?

Firstly, know that if you just stop drinking caffeine all at once, it may lead to withdrawal symptoms like headache, irritability, fatigue, and nausea. If you're going to cut back make sure to do so slowly over time by mixing caffeinated and non-caffeinated beverages together gradually until eventually, you are not getting any caffeine in your diet. You can also replace caffeinated beverages with healthier drinks such as tea or water. If you drink coffee only because you are tired, it is best that you go for a balanced diet to increase your energy levels, and get proper sleep at night.

Conclusion222

Conclusion

We hope this caffeine calculator helps you learn how much caffeine is good and bad for your body! Be sure not to exceed 400 milligrams of caffeine per day - more than that could lead to unpleasant side effects such as jitteriness, insomnia, and heart palpitations.

The caffeine calculator is a powerful tool that will help you find the perfect balance between what's good for your body and what isn't. It can be difficult to know exactly how much caffeine is too much, but this article should have helped clear things up! We are also working on a caffeine half-life calculator, more information coming soon!

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