How Many Ounces Are In A Liter?
Quick Conversion Guide & Why It Matters
Let’s break it down, fast and simple.
The Quick Answer:
1 liter = 33.814 US fluid ounces
As you can see, it’s not a simple conversion. So for most of us in the U.S., stick with 33.8 ounces per liter, or round up to 34 ounces. In the U.S. you’ll commonly find liquid measurements in ounces or liters, and similarly we offer Rambler® Bottles sized in ounces, and Yonder® in mL.
What Is a Liter?
A liter (L) is a metric unit of volume commonly used to measure liquids. It is part of the International System of Units (SI) and is widely used worldwide, especially in countries that follow the metric system.
How Much Is a Liter?
A liter is equivalent to:
- 1,000 milliliters (mL)
- 4.226 cups (U.S.)
- 2.11 pints (U.S.)
- 1.057 quarts (U.S.)
Common Uses for Liters
Liters are often used to measure:
- Beverages – Bottled water, soda, and milk are commonly sold in liters.
- Cooking & Recipes – Many recipes outside the U.S. use liters instead of quarts or gallons.
- Fuel Measurement – Gasoline is often measured in liters outside the United States.
- Science & Medicine – Precise liquid measurements in chemistry and healthcare.
Since the liter is a metric measurement, it may not be as intuitive for those more familiar with the U.S. customary system, which uses ounces, pints, quarts, and gallons. That’s why conversions like liters to ounces are so useful!
What Is an Ounce?
The term ounce (oz) can refer to two different units of measurement: fluid ounces (fl oz) for liquids and ounces (oz) for weight. In this post, we’re specifically talking about fluid ounces, which measure volume.
How Much Is a Fluid Ounce?
A fluid ounce is a small unit of volume used mainly in the United States and the United Kingdom, but the measurement differs slightly between the two systems:
| System | Fluid Ounce Equals |
|---|---|
| U.S. Customary System | 29.573 milliliters (mL) |
| Imperial (UK) System | 28.413 milliliters (mL) |
Here’s another way to think about it: how many times would you need to refill your YETI® Rambler® or Yonder® Bottle to hit a full gallon?
Common Uses for Fluid Ounces
Fluid ounces are frequently used to measure:
- Drinks & Beverages – Water bottles, coffee cups, and soft drinks are labeled in fluid ounces in the U.S.
- Cooking & Baking – Recipes often list liquid ingredients in ounces.
- Nutrition Labels – U.S. nutrition facts often use fl oz to describe serving sizes.
- Bar & Cocktail Measurements – Many cocktail recipes use ounces to measure spirits and mixers.
Understanding fluid ounces vs. liters helps when converting between the U.S. and metric systems, making it easier to measure, cook, and drink smarter.
Breaking It Down: Liters to Ounces
| Liters | Fluid Ounces (U.S.) | Nearest Rambler® Size | Nearest Yonder® Bottle |
|---|---|---|---|
| 250 mL | 8.5 oz | 12 oz Rambler® Jr. Bottle | 600 mL / 20 oz Yonder® Bottle |
| 500 mL | 16.9 oz | 18 oz Rambler® (slightly over ½ L) | 750 mL / 25 oz Yonder® Bottle |
| 1 liter | 33.8 oz | 36 oz Rambler® Bottle (just over 1L) | 1L / 34 oz Yonder® Bottle |
| 2 liters | 67.6 oz | Just over a Rambler® Half-Gallon Jug | 1.5 L / 50 oz Yonder® Bottle |
| 3 liters | 101.4 oz | Rambler® One-Gallon Jug (128 oz) | N/A |
So if you’re eyeing a YETI® 36 oz. Rambler® Bottle, it holds a little more than 1 liter — plenty to keep you hydrated while you’re on the move. Or, opt for our 1L Yonder® Bottle and the math is already done for you.
Why Does This Matter?
Meeting Your Hydration Goals
Doctors, fitness coaches, and outdoor guides all say the same thing: drink more water. But how much do you actually need?
- Standard recommendation: 2–3 liters per day (67–101 oz)
- Athletes & outdoor adventurers: 3+ liters per day (101+ oz)
- Hot weather & high-altitude conditions: More than 3 liters
That means if you’re hiking, running, or working outdoors, a Rambler® One-Gallon Jug will easily cover your daily intake. But since that’s not always practical to carry with you, bringing a reusable Rambler® or Yonder® Bottle and refilling it throughout the day is the best bet.
Which YETI Rambler® Bottle Holds the Right Amount?
If you’re tracking hydration in liters, here’s how YETI sizes match up:
| YETI Rambler® Size | Liters (Approx.) | Best Use Case |
|---|---|---|
| 18 oz Rambler® Bottle | 532 mL | Short hikes, quick hydration Daily use, workouts |
| 20 oz Yonder® Bottle | 600 mL | |
| 25 oz Yonder® Bottle | 750 mL | All-day hydration, longer days out |
| 26 oz Rambler® Bottle | 750 mL | |
| 34 oz Yonder® Bottle | 1 L | Multi-hour trips, team sports All-day hydration |
| 36 oz Rambler® Bottle | 1 L | |
| 46 oz Rambler® Bottle | 1.4 L | Team sports, a day’s worth of water |
| 50 oz Yonder® Bottle | 1.5 L | |
| Half-Gallon Jug | < 2 L | Basecamp refills, ranch and jobsite hydration. |
| One-Gallon Jug | < 4 L |
For most everyday use, a YETI 36 oz Bottle gets you just over a liter—a perfect carry for all-day hydration.
Final Thoughts
Liters. Ounces. Same hydration game, different numbers. Now you know:
1 liter = 33.814 ounces
Most people need 2–3 liters a day
YETI 36 oz Bottle = just over 1 liter
YETI One-Gallon Jug = almost 4 liters (full daily hydration in one fill-up)
Our Rambler® and Yonder® Bottles are built to meet your hydration needs.
