How Many Ounces Is A Standard Water Bottle?

As we grow more and more conscious of our daily water intake, we become more mindful of how many times we actually drink water in a day – and how much. Making sure you drink water all throughout your day is also the right step in ensuring that you hit your daily hydration requirements. It is a very good way to love our bodies, take care of them, and keep them healthy.

A great way to practice self-love is to always have a reusable water bottle with you. Owning and using personal reusable water bottles have skyrocketed in popularity in recent years. And why not? It’s a stellar way for us to always have water within our grasp. Plus, it’s very practical because you can bring it wherever you go, and it’s eco-friendly too because it’s reusable!

Toting a water bottle with you ensures that you always have water to drink, whether you are at home, at the gym, taking a walk in the park, doing some shopping, picking up your kids from school, and more. Experts say that a good way to make sure you are hydrated is to listen to your body and drink up every time you feel thirsty. With a water bottle at hand, you are able to do this!

Aside from following your thirst, you may also be more mindful of the quantity of water you drink each day. For many people who have become more conscious about their water intake, knowing just how much water they should be drinking each day is a big factor in helping them monitor their H2O intake.

Once you know how much water, on average, you should be drinking each day, and you marry that with how many ounces your water bottle can hold when filled, you’ll be able to figure out just how many times you should drink up your entire water bottle and refill it. This, in turn, will help ensure that you are hydrating your body enough on a day-to-day basis.

Daily Water Intake In Ounces

Daily Water Intake In Ounces

Many experts have weighed in on this topic. Though there are differing recommendations, it’s best to learn all of them and use them as a guide to help you figure out how much is enough for you.

8×8 Rule

The old-school rule has been to drink 8 cups of water a day. Now you may think, ‘But how much water is that exactly?’ Let’s break it down!

In this rule, the cup size that is generally used is an 8-ounce cup. That means that this rule actually translates to 8 x 8 or 8 ounces of water multiplied by 8 times throughout the day. The answer when we look at water intake this way is 64 ounces. Hence, if we go by this rule, we should drink about 64 ounces of water daily.

Also Read:- How Much Is 3 Liters Of Water In Ounces? Liter To Ounce Converter

Recommended Daily Fluid Intake In Ounces

Recommended Daily Fluid Intake In Ounces

As we mentioned above, the 8×8 rule, while widely known, is also widely considered to be outdated by many. Health experts have released the following daily fluid intake recommendation, taking into account the gender:

  • Men should take about 125 ounces or 3.7 liters daily.
  • Women should take about 91 ounces or 2.7 liters daily.

It is also very encouraging to consider these numbers to merely be starting points. Each body is different, and factors like physical activity, diet, metabolism, size, location, and health are all factors that affect how much water you actually need to drink per day.

Also, keep in mind that all the fluid you consume will not just come from the water you drink. Around 20% or so of your daily fluid intake will also come from water that is in your food, as well as other beverages.

All these being said, you probably now have a general idea of how much water you should be drinking every day in ounces. So, now let’s get into how your water bottle affects your intake – and why it’s important to know how many ounces are in your water bottle.

Water Bottle Capacity: Why Does It Matter?

Water bottles come in a variety of sizes. Especially in recent years, companies have been releasing a wider range of sizes when it comes to water bottles. There is a water bottle size that will fit whatever your daily needs may be.

Indeed, water bottle sizes vary for the sake of each consumer’s convenience. So it’s likely that you have already encountered water bottles of so many different sizes – heck, you might even own some of them!

A water bottle is designed to fit into your daily life. Each one has its own size, shape, design, and even weight. It’s up to you to choose which one is ideal for you to carry with you all throughout your day wherever you go.

You may even choose to buy a handful of bottles to suit each particular need: You may have one for when you are home, a different sized one for when you go to the gym, yet another different sized one when you do your errands, and so on.

Whatever your choice may be (one bottle for all or a collection of bottles for every need), it is very important to educate yourself on the water holding capacity of the bottle or bottles you own.

The reason for this is simple: Knowing how much water a particular water bottle holds will help you determine how many times you need to drink and refill to guarantee that you hit your hydration requirements all day, every day.

So before you buy, check the water holding capacity of the water bottle you are eyeing!

Also Read:- How Many Cups are there in a Bottle of Water?

How Many Ounces In A Water Bottle

We talked earlier about how there are varying sizes of water bottles. Surely if you look hard enough, you will probably find a water bottle that holds the amount of water that is ideal for you! For discussion’s sake, let’s stick to the more “standard” or common water bottle sizes.

Also Read:- How Many Oz (Ounce) In A Gallon of Water?

16.9 – 17 Ounce Water Bottle

Perhaps the most standard size of reusable water bottle is the 16.9 oz or 17 oz water bottle. The reason for this is simple: This is the size of a typical single-use plastic water bottle. So those who have become used to drinking these and searched for a replacement that is more practical, cost-efficient, and pro-environment have gravitated towards reusable bottles of this size.

Basically, a “standard” water bottle then holds about 16.9 ounces to 17 ounces. Based on your daily water intake goals, just multiply these by the number you need to hit that goal, and that will be the number of times you need to fill this water bottle up and drink it each day.

20 Ounce Water Bottle

For those who have been in search of a size similar to what they have grown used to (standard water bottle size) but want a few extra ounces of water, the 20-ounce water bottle is the next best option. This size can carry a little more than the average water bottle which means you will be taking in more each time you empty it.

Having a water bottle that is slightly bigger than the “standard” will also enable you to have to empty and refill slightly less daily.

24 Ounce Water Bottle

If you want the convenience of not necessarily having to immediately refill every time you take a swig out of your water bottle, the 24-ounce water bottle is a solid choice.

This water bottle size can hold about one-third more than the standard size bottle – and also means more convenience if you can’t immediately go somewhere and refill your water bottle!

A 24-ounce bottle holds in more water which leads to lesser refills. At the same time, it is still light enough to tote around with you as you go about your day.

32 Ounce Water Bottle

For those who want more water at hand and don’t mind a little bulk and weight, the 32-ounce water bottle is a good choice! This water bottle holds about twice the amount that a standard water bottle holds, which means for one refill, you get water that is equivalent to two whole standard-size bottles of water! It’s a superb option if you know that it will take you a while before you are able to refill, and yet you still want to be able to drink as you please.

32-ounce water bottles are also great because though they are able to give you a significantly bigger water supply, they are still tote-able! Win-win.

40 Ounce Water Bottle

Now, if you really, really don’t mind the extra size and weight and you really need to have a big supply of water with you, the 40-ounce water bottle may be what you are looking for. This water bottle holds the equivalent of two and a half standard water bottles!

It’s a favorable choice if you are going somewhere for an extended period of time and you need to have enough water with you.

And yet, it is still a size that you can carry. With a little more effort, yes, but not too much. The 40-ounce water bottle is something that you can still carry around with you or put in a backpack.


Here are some facts and questions related to how many ounces of water you need per day.

Q1. How many ounces is a standard water bottle?

Water bottles come in many different sizes to suit a myriad of needs. The most standard size of reusable water bottle is considered to be the 16.9-ounce water bottle – this is the standard size of a typical single-use bottle.

Q2. How much is a normal water bottle?

As to how much water is in a normal water bottle, the answer varies depending on the size of your water bottle. When referring to the standard size bottle – it can hold 169 ounces of fluid, which is equivalent to 2 glasses of water (a standard water glass holds 8 ounces).

Q3. Is 4 bottles of water a day enough?

This, again, depends on the size of your water bottle and how much your daily water intake should be. If we go by the 8 x 8 rule (8 8-ounce glasses each day) and you are using a standard 16.9-ounce water bottle, then four bottles may be enough. This will vary depending on your water bottle size and the amount of water you should take daily.

Q4. How many 16 oz of water should I drink a day?

As mentioned above, if you are following the 8 x 8 rule of 8 8-ounce glasses per day, then 4 16-ounce bottles of water are enough.

Q5. Is a gallon of water a day too much?

Drinking a gallon of water a day can be beneficial to some people, but it can also be harmful to others. There are many factors to consider when looking at daily water intake goals, which vary from individual to individual. It’s best to know the recommended amount of water for you.


Now that you know how many ounces are in the more common water bottles, you’ll be able to more adequately choose which one is right for you or which one will best fit your needs or lifestyle. Couple that with the knowledge of how much water you should drink each day. And finally, you will be able to calculate how many times you have to refill your bottle throughout the day to hit your hydration goals.