Converting 64 Ounces to Standard Water Bottles
Quick answer
- A standard Nalgene bottle holds 32 ounces.
- So, 64 ounces is about two Nalgene bottles.
- Many reusable bottles are 20-32 oz.
- You’ll need 2-3 of those.
- Always pack more water than you think you need.
- Check bottle labels for exact capacity.
For a reliable and durable option, consider a Nalgene 32 oz water bottle. They’re a popular choice for outdoor enthusiasts.
What to check first (do this before you drive out)
Before you even think about packing your water, do a quick check on where you’re heading.
- Land manager / legality: Who’s in charge of the land? Is it National Forest, BLM, State Park, or private? This dictates rules. You can usually find this on a map or the agency’s website. Always respect their regulations.
- Access/road conditions: How are the roads out there? Is it paved, gravel, or just a dirt track? Will your car handle it, or do you need 4WD and good clearance? A little scouting report online can save you a tow.
- Fire restrictions + weather + wind: Check the local fire restrictions. Seriously. A spark can cause a disaster. Also, look at the weather forecast and wind. High winds mean fires spread fast.
- Water plan + waste plan (Leave No Trace): Where will you get water if you run out? Is there a reliable source? If not, you need to carry it all. And remember, pack out everything you pack in. That includes all trash and food scraps.
- Safety (wildlife, distance to help, comms): What kind of critters are in the area? Know what to do if you encounter them. How far is the nearest town or ranger station? Do you have cell service or a satellite communicator? Don’t be a hero.
Step-by-step (field workflow)
Alright, let’s get that water sorted. It’s simple, but don’t overthink it.
1. Identify your needs: How long will you be out? What’s the activity level? How hot will it be?
- Good looks like: You’ve thought about actual hydration needs, not just guessing.
- Common mistake: Underestimating how much water you’ll drink, especially in heat or during strenuous activity. Avoid this by adding an extra liter per person per day, just in case.
2. Know your bottles: What size are your primary water containers? Most reusable bottles are 20-32 ounces.
- Good looks like: You know the exact capacity of each bottle you plan to carry.
- Common mistake: Assuming all bottles are the same size. You might end up short if you’re just estimating.
3. Calculate your base water amount: For this case, we’re starting with 64 ounces. That’s our target volume.
- Good looks like: You have a clear starting number to work with.
- Common mistake: Getting confused by different units (gallons, liters, ounces). Stick to ounces for this conversion.
4. Determine bottle count for 64 oz: How many of your chosen bottles equal 64 ounces?
- Good looks like: You can do the math or have a good estimate.
- Common mistake: Trying to fit 64 oz into a single bottle that’s too small. You need the right number of containers.
5. Pack extra: Always pack more water than you think you’ll need. I usually add at least 20% extra.
- Good looks like: You have a buffer for unexpected delays or higher-than-expected thirst.
- Common mistake: Packing just enough. A flat tire or a longer hike than planned can leave you dangerously dehydrated.
6. Consider water sources: If there are reliable water sources, you can carry less. But you must have a way to purify it.
- Good looks like: You’ve researched water availability and have a filter or purification tablets ready.
- Common mistake: Relying on a water source that turns out to be dry or contaminated. Always have a backup plan.
If you’re planning to use natural water sources, make sure to have water purification tablets on hand for safe drinking.
7. Distribute the load: Spread your water out. Don’t put all your eggs (or water) in one basket.
- Good looks like: Water is in multiple bottles, maybe one in your pack, one in your car.
- Common mistake: Having all your water in one easily dropped or lost container.
8. Hydrate constantly: Sip water throughout the day, don’t wait until you’re thirsty.
- Good looks like: You’re drinking regularly, keeping your energy up.
- Common mistake: Binge drinking when you’re already parched. This is inefficient and can be dangerous.
Common mistakes (and what happens if you ignore them)
| Mistake | What it causes | Fix |
|---|---|---|
| Underestimating water needs | Dehydration, heat exhaustion, poor decision-making, serious health risks. | Pack at least 20% more water than you think you’ll need. Adjust based on heat, exertion, and altitude. |
| Relying on questionable water sources | Waterborne illnesses (giardia, cryptosporidium), stomach issues, weakness. | Always filter or treat water from natural sources. Carry a reliable filter or purification tablets. |
| Not checking fire restrictions | Fines, jail time, and starting a wildfire that destroys ecosystems and homes. | Check official agency websites (USFS, BLM, State Parks) for current fire bans <em>before</em> you leave. Know the rules for campfires. |
| Ignoring road conditions | Getting stuck, vehicle damage, needing a tow, missing your planned outing. | Research road conditions. Know your vehicle’s capabilities (2WD, AWD, clearance). Have appropriate tires. |
| Forgetting Leave No Trace principles | Damaged environments, negative impacts on wildlife, restricted future access. | Pack out all trash. Minimize campfire impacts. Leave what you find. Respect wildlife. Be considerate of others. |
| Not having a communication plan | Inability to call for help in emergencies, feeling isolated. | Carry a satellite communicator or personal locator beacon if out of cell service. Tell someone your itinerary. |
| Assuming cell service will be available | Stranded without help when you need it most. | Download offline maps. Carry a physical map and compass. Have a backup communication device. |
| Not knowing your water bottle capacity | Running out of water unexpectedly, carrying too much or too little. | Read the label on your bottles or measure their volume. It’s a simple step that prevents big problems. |
| Not purifying water when necessary | Severe gastrointestinal distress, dehydration from illness. | Always treat water from streams, lakes, or rivers, even if it looks clear. Filters and chemical treatments are your friends. |
| Overpacking unnecessary gear | Increased weight, fatigue, slower progress, potential for injury. | Pack smart and light. Focus on essentials. Every ounce counts when you’re hiking. |
Decision rules (simple if/then)
- If the temperature is over 80°F, then pack an extra liter of water per person because heat accelerates dehydration.
- If you’re doing strenuous activity like a long hike or climbing, then increase your water intake by 50% because exertion uses more water.
- If there are no reliable water sources on your trip, then carry all the water you’ll need for the entire duration because you won’t have a backup.
- If you plan to use a natural water source, then bring a reliable water filter or purification tablets because untreated water can make you sick.
- If you’re in a known bear or mountain lion area, then store food properly and make noise while hiking because wildlife encounters are serious.
- If road conditions are questionable (mud, snow, washouts), then check recent reports or a local ranger station before you go because you don’t want to get stuck.
- If there are high winds, then be extra cautious with campfires and cooking stoves because embers can travel far and fast.
- If you are venturing into remote areas, then carry a satellite communicator or PLB because cell service is unreliable.
- If you’re unsure about local regulations, then check the land manager’s website (USFS, BLM, NPS, State Parks) because rules can change.
- If you have any medical conditions, then inform your hiking partners and carry any necessary personal medication because preparedness is key.
- If you plan on having a campfire, then check the fire restrictions daily because bans can be implemented quickly.
- If you’re a beginner, then stick to well-traveled trails and areas with ranger presence because you can learn the ropes safely.
FAQ
How many 32 oz water bottles make 64 oz?
Two 32-ounce bottles equal exactly 64 ounces. This is a common size for Nalgene bottles.
Many outdoor enthusiasts rely on the durability and capacity of a Nalgene 32 oz water bottle for their adventures.
Are there standard water bottle sizes for camping?
While there isn’t one single standard, 32 oz (like Nalgene) and 20-24 oz are very common for reusable bottles. Many hydration reservoirs are 2-3 liters (roughly 64-96 oz).
What if I only have 16 oz bottles?
You’d need four 16-ounce bottles to reach 64 ounces. It means carrying more individual containers.
Can I just use plastic water bottles from the store?
You can, but reusable bottles are better for the environment and often more durable for camping. Store-bought bottles are typically around 16.9 oz or 20 oz.
What’s the best way to carry 64 oz of water?
For a day hike, two 32 oz bottles in your pack or side pockets work well. For longer trips, consider a larger hydration reservoir or a mix of bottles.
Do I need more water in hot weather?
Yes, absolutely. For every 10°F above 70°F, consider adding at least an extra 16-32 oz per person.
What does “Leave No Trace” have to do with water?
It means not contaminating water sources with soap or waste, and packing out everything you bring in, including empty bottles if they become trash.
Is 64 oz enough for a full day of hiking?
It depends. For a moderate hike in cool weather, maybe. For a strenuous hike in heat, you might need 100 oz or more. Always err on the side of carrying too much.
What this page does NOT cover (and where to go next)
- Detailed water purification methods (filters, tablets, boiling).
- Specific recommendations for hydration packs or advanced water storage systems.
- Calculating water needs for multi-day backpacking trips in extreme conditions.
- Identifying potable water sources in the wilderness.
- Regulations for water usage in specific national parks or wilderness areas.
Camping Bob has spent over 20 years camping across the US — from BLM dispersed sites in the Southwest to KOA campgrounds in the Pacific Northwest. He writes practical, no-nonsense guides to help fellow campers get outdoors with confidence.

