Skip to content

How Many Water Bottles is 64 0z? The Ultimate Guide to Daily Hydration

4 min read

According to the popular '8x8 rule,' a daily intake of 64 ounces is often recommended for adequate hydration. Understanding precisely how many water bottles is 64 oz can simplify tracking this target, as the number required depends entirely on the size of the bottle you are using.

Quick Summary

The number of bottles needed for 64 ounces varies by size. The calculation is a simple division: 64 ounces divided by the bottle's fluid capacity. For example, it takes four 16-ounce bottles to equal 64 ounces.

Key Points

  • Standard Bottle Count: You need four standard 16-ounce or 16.9-ounce water bottles to reach a 64-ounce hydration goal.

  • Half-Gallon Simplicity: A single 64-ounce bottle, often called a half-gallon jug, makes tracking your daily water intake extremely easy.

  • Daily Intake: The 64-ounce recommendation is a common benchmark for daily water intake, equivalent to eight 8-ounce glasses.

  • Calculation: The formula is straightforward: divide 64 by the size of your bottle to find out how many you need.

  • Choosing a Bottle: The best bottle size depends on your lifestyle; larger bottles mean fewer refills, while smaller ones offer more portability.

  • Hydration Benefits: Reaching 64 ounces daily supports energy levels, concentration, physical performance, and overall bodily function.

In This Article

Calculating 64 Ounces with Common Bottle Sizes

Determining how many water bottles you need for 64 ounces is a straightforward calculation. You simply divide the total ounces you want to achieve (64) by the number of ounces in your bottle. Since water bottles come in various sizes, the number will change accordingly. Here is a breakdown of the most common bottle sizes and the simple math behind them.

Standard Disposable Bottles (16.9 oz)

The most common plastic bottle sold in cases at grocery stores is 16.9 fluid ounces, which is equivalent to 500 milliliters. To find out how many of these make up 64 ounces, you divide 64 by 16.9:

  • $64 \div 16.9 \approx 3.78$ bottles

Since you can't use a fraction of a bottle, you would need to consume four of these bottles to meet or slightly exceed your 64-ounce goal. This is a popular and easy-to-remember target for many people tracking their daily intake.

Reusable Bottles (24 oz, 32 oz, and 40 oz)

Reusable bottles are an eco-friendly option that can also simplify tracking your water intake. Here’s the math for some popular reusable sizes:

  • 24 oz Bottles: $64 \div 24 \approx 2.67$ bottles. This means you would need to fill and drink just under three of these bottles. Many people find this a good balance between capacity and portability.
  • 32 oz Bottles: $64 \div 32 = 2$ bottles. This size is one of the easiest to track, as two full bottles equals exactly 64 ounces, which is a half-gallon.
  • 40 oz Bottles: $64 \div 40 = 1.6$ bottles. For those who prefer a larger bottle, one and a half of these would get you to your goal with a little extra.

Half-Gallon Jugs (64 oz)

For maximum simplicity, some bottles are specifically designed to be 64 ounces, also known as a half-gallon jug. This eliminates the need for any conversion or math, as one full bottle is all you need to reach your target. These are especially popular with athletes or those who want a clear visual indicator of their daily progress.

The Water Bottle Conversion Table

Below is a handy comparison table to visualize how many bottles of different sizes are required to reach 64 ounces.

Bottle Size (oz) Calculation Number of Bottles for 64 oz Notes
16.9 oz (Standard Disposable) $64 \div 16.9$ $\approx 3.78$ (round up to 4) Most common disposable size.
20 oz $64 \div 20$ $3.2$ (round up to 4) A popular size for daily use and workouts.
24 oz $64 \div 24$ $\approx 2.67$ (round up to 3) A versatile option balancing capacity and portability.
32 oz (Quart) $64 \div 32$ $2$ (exactly) Very easy to track with two refills.
40 oz $64 \div 40$ $1.6$ (round up to 2) For those with high hydration needs.
64 oz (Half-Gallon) $64 \div 64$ $1$ (exactly) Simplifies tracking to a single goal.

Beyond the Bottle: Why Hydration Matters

Reaching a daily intake of 64 ounces is a common recommendation, but why is proper hydration so important? The benefits extend far beyond just quenching thirst.

  • Energy Levels and Brain Function: Proper hydration helps maintain energy levels and optimize brain function. Even mild dehydration can impair mood and concentration.
  • Physical Performance: Staying well-hydrated is crucial for physical activity, helping to maximize performance and prevent fatigue.
  • Kidney Health: Water helps the kidneys flush out waste products from the blood and transport them to the bladder. Consistent hydration helps prevent kidney stones.
  • Skin Health: Adequate water intake helps keep skin hydrated and can improve its elasticity and overall appearance.

It is also important to remember that the 64-ounce recommendation is a general guideline. Your personal needs may vary depending on factors such as your activity level, climate, body weight, and health status. Athletes, individuals in hot climates, or those with certain health conditions may need to increase their intake.

Choosing Your Best Hydration Strategy

Beyond knowing how many bottles equal 64 ounces, having a strategy for daily hydration is key. Consider these tips for making it a seamless part of your routine:

  1. Set Reminders: Use your phone or a smart water bottle to remind you to drink throughout the day. Spreading your intake evenly is better than drinking a large amount at once.
  2. Use a Visual Aid: Use a single, large bottle, like a 64 oz jug, that you fill at the beginning of the day. This provides a clear visual goal and simplifies tracking.
  3. Mix It Up: If you get tired of plain water, infuse it with fruits like lemon, berries, or cucumber for added flavor without sugar. You can also explore different bottle types and drinking spouts to find what you like best, as covered by Owala in their guide to hydration.
  4. Drink Before You're Thirsty: Thirst is often a sign that your body is already starting to become dehydrated. Make drinking a proactive habit.

Conclusion

While the exact number of water bottles needed for 64 ounces varies, the calculation is simple division. For those using standard disposable 16.9 oz bottles, four are needed to reach the target. For larger reusable bottles, the number is smaller and easier to manage, such as just two 32 oz bottles. The most effective strategy is to choose the bottle size that fits your lifestyle and makes consistent, daily hydration a simple and achievable goal. The ultimate objective is not the number of bottles, but the consistent intake of water to support your overall health and wellness.

Visit Owala's blog for more hydration tips

Frequently Asked Questions

You would need four 16.9-ounce bottles to make 64 ounces. The precise calculation is 64 divided by 16.9, which equals approximately 3.78, so you round up to four bottles to meet or exceed the goal.

Two 32-ounce water bottles are exactly 64 ounces. This makes using a 32 oz bottle one of the most straightforward ways to track your 64 oz daily water intake goal.

For many adults, 64 oz is a solid and common daily water intake goal. However, your ideal intake can vary based on factors like your activity level, climate, body weight, and overall health.

64 fluid ounces is approximately 1.89 liters. So, drinking 64 ounces is almost the equivalent of consuming two liters of water daily.

Drinking 64 oz of water can help maintain energy levels, support brain function, maximize physical performance, and promote healthy skin and kidneys.

Yes, you can use any combination of bottle sizes to reach 64 ounces. Just track the total ounces from each bottle consumed throughout the day until you reach your target amount.

The easiest way to track your intake is by using a single, 64-ounce bottle that you fill once and finish throughout the day, or two 32-ounce bottles.

References

  1. 1
  2. 2
  3. 3
  4. 4
  5. 5

Medical Disclaimer

This content is for informational purposes only and should not replace professional medical advice.