Iron Flask makes premium, double-wall, vacuum insulated stainless steel water bottles that keep water ice cold for up to 24 hours — what more could you want from a water bottle?
I’ve been making an effort to increase my water intake lately and Iron Flask makes it effortless.
If you’re looking to drink more water and are wondering how many Iron Flask bottles you should drink each day, you’ve come to the right place.
If you want to drink eight cups of water a day, you’ll need to drink four 16 oz Iron Flask bottles, two 32 oz bottles, or around one-and-a-half 40 oz bottles. The number of Iron Flask Water Bottles you should drink each day depends on your personal fluid intake goals and the size of your bottle.
Below I’ll show you how many Iron Flask Bottles, Tumblers, or Mugs you should drink each day to reach your personal hydration goals. I’ll also teach you how to determine exactly how much water you should be drinking every day.
How Many Iron Flask Water Bottles Should You Be Drinking Per Day?
The number of Iron Flask Bottles you should drink each day depends on your personal fluid intake goal and the size of your bottle.
Obviously there’s a huge difference between the number of 64 oz bottles you’ll need to drink compared to 12 oz bottles or 10 oz tumblers.
If I’m away from home, I often get my eight cups for the day from two 32 oz bottles. If I’m spending the day closer to the house, I’ll usually drink three 20-22 oz bottles instead. I just find them more convenient to use when I can easily fill them up with fresh cold water from the fridge.
You can use the chart below to determine exactly how many Iron Flask Water Bottles, Tumblers, or Mugs you’ll need to drink each day to reach your own personal fluid intake goals.
| Iron Flask Bottle Size | 4 Cups/Day | 8 Cups/Day | 1 Gal/Day |
| 10 oz | 3.2 | 6.4 | 12.8 |
| 12 oz | 2.7 | 5.3 | 10.7 |
| 14 oz | 2.3 | 4.6 | 9.1 |
| 16 oz | 2 | 4 | 8 |
| 17 oz | 1.9 | 3.8 | 7.5 |
| 18 oz | 1.8 | 3.6 | 7.1 |
| 20 oz | 1.6 | 3.2 | 6.4 |
| 22 oz | 1.5 | 2.9 | 5.8 |
| 24 oz | 1.3 | 2.7 | 5.3 |
| 25 oz | 1.3 | 2.6 | 5.1 |
| 28 oz | 1.1 | 2.3 | 4.6 |
| 32 oz | 1 | 2 | 4 |
| 40 oz | 0.8 | 1.6 | 3.2 |
| 64 oz | 0.5 | 1 | 2 |
| 128 oz | 0.25 | 0.5 | 1 |
How Much Water Should You Be Drinking Per Day?
I find it interesting to have a closer look at how much exactly I should be drinking per day. Because some days 8 glasses feels like way too much (and causes me to wee a lot) and other days I'll exceed that.
If I'm in the sauna I'll drink 64 oz in 40 minutes!
Setting a daily fluid intake goal isn’t as simple as following the old adage of “drink eight glasses of water per day.”
While it’s a reasonable starting point and will work well enough for the average healthy adult, it's not really quite so straightforward.
Factors like your age, weight, location, activity level, and overall health can change the amount of water you need — sometimes substantially.
Healthcare Triage did a nice job of summing it up in the video below.
According to the National Academies of Sciences, Engineering and Medicine, it’s better for the average healthy adult to simply let their thirst guide them.
Drink when you’re thirsty, eat a diet rich in fruits and vegetables (which are also great sources of hydration), and drink before, during, and after physical activity.
Get Yourself An Iron Flask Water Bottle
Iron Flask Water Bottles are premium double-walled, vacuum insulated stainless steel bottles that can keep water ice cold for up to 24 hours.
The best part is that every Iron Flask comes equipped with multiple lids for whatever type of drinking, sipping, or chugging you’re in the mood for.
This double walled vacuum insulated bottle will keep your drinks cold for 24+ hours and hot for 12+ hours.
Features a sweat proof design and comes with 3 lid options - straw, flip and stainless steel. Backed by a 100% satisfaction guarantee and thousands of 5 star reviews this bottle is a fraction of the cost compared to more expensive brands.
