Oz to mL Converter (Ounces to Milliliters Conversion Tool)
Oz to mL Conversion US (Customary)
1 oz = 29.5735 mL
8 oz = 236.59 mL
16 oz = 473.18 mL
Formula:
Milliliters (mL) = Ounces (oz) × 29.5735
Oz to mL Conversion UK (Imperial)
1 oz = 28.41 mL
8 oz = 227.30 mL
16 oz = 454.61 mL
Formula:
Milliliters (mL) = Ounces (oz) × 28.4131
Oz to ml Calculator
Ounces to Milliliters Conversion Table
| Ounces (oz) | Milliliters (mL) | Common Use Examples |
|---|---|---|
| 1 oz | 29.57 mL | Medicine dose |
| 2 oz | 59.15 mL | Small liquid serving |
| 3 oz | 88.72 mL | Espresso double shot |
| 4 oz | 118.29 mL | Half cup |
| 5 oz | 147.87 mL | Wine serving |
| 6 oz | 177.44 mL | Juice serving |
| 7 oz | 207.01 mL | Small drink |
| 8 oz | 236.59 mL | Standard cup |
| 9 oz | 266.16 mL | Small coffee |
| 10 oz | 295.74 mL | Medium drink |
| 11 oz | 325.31 mL | Coffee mug |
| 12 oz | 354.88 mL | Soda can |
| 13 oz | 384.46 mL | Large coffee |
| 14 oz | 414.03 mL | Large drink |
| 15 oz | 443.60 mL | Big mug |
| 16 oz | 473.18 mL | Pint glass |
| 17 oz | 502.75 mL | Water bottle |
| 18 oz | 532.32 mL | Large bottle |
| 19 oz | 561.90 mL | Drink bottle |
| 20 oz | 591.47 mL | Soda bottle |
| 21 oz | 621.04 mL | Large soda |
| 22 oz | 650.62 mL | Beer bottle |
| 23 oz | 680.19 mL | Large beer |
| 24 oz | 709.76 mL | Extra large drink |
| 25 oz | 739.34 mL | Large water bottle |
| 30 oz | 887.21 mL | Tumbler |
| 35 oz | 1035.07 mL | Big sports bottle |
| 40 oz | 1182.94 mL | Large thermos |
| 45 oz | 1330.81 mL | Extra large bottle |
| 50 oz | 1478.68 mL | Half gallon approx |
| 60 oz | 1774.41 mL | Large jug |
| 70 oz | 2070.15 mL | Hydration pack |
| 80 oz | 2365.88 mL | Big jug |
| 90 oz | 2661.62 mL | Large container |
| 100 oz | 2957.35 mL | 1 gallon approx |
| 200 oz | 5914.70 mL | Large storage container |
| 300 oz | 8872.05 mL | Bulk liquid |
| 400 oz | 11829.40 mL | Commercial use |
| 500 oz | 14786.75 mL | Bulk storage |
| 600 oz | 17744.10 mL | Industrial container |
| 700 oz | 20701.45 mL | Large tank |
| 800 oz | 23658.80 mL | Bulk liquid storage |
| 900 oz | 26616.15 mL | Industrial usage |
| 1000 oz | 29573.50 mL | Very large container |
What is an Ounce (oz)?
An ounce (oz) is a unit of measurement commonly used in the United States to measure both weight and volume. Ounces are widely used in cooking, beverages, and medicine. Understanding ounces is important because many recipes and product labels use this unit, and converting it correctly into milliliters helps ensure accurate measurements.
What is a Fluid Ounce?
A fluid ounce (fl oz) is a unit used to measure liquid volume, not weight. It tells you how much space a liquid takes up. Our calculator shows 1 US fluid oz to mL conversion equals 29.5735 milliliters. Fluid ounces are commonly used in recipes, drink sizes, and medication dosing.
What is the Difference Between US and UK Ounces?
There are two types of fluid ounces:
- US Customary Fluid Ounce: This system is mainly used in the United States, which defines one fluid ounce as 1/128th part of a US gallon, which is approximately 29.57 milliliters (mL).
- Imperial Fluid Ounce: This system is popular in the United Kingdom and some other countries. This system defines one fluid ounce as 1/160
of an Imperial gallon, which is approximately 28.41 milliliters (mL).
This difference may seem small, but it can affect accuracy in cooking, baking, or medicine calculations. When doing oz to mL conversion, it is important to know which system you are using to get correct results.
What is a Milliliter (mL)?
A milliliter (mL) is a unit of volume used to measure liquids in the metric system. It is commonly used worldwide for cooking, medicine, and scientific measurements. One milliliter is equal to one-thousandth (1/1000) of a liter, making it a precise and easy-to-use unit. In oz to mL conversion, milliliters help provide accurate liquid measurements compared to ounces.
Metric System Explanation
The metric system is a standard system of measurement used around the world, especially for scientific and everyday purposes. It includes units like milliliters (mL), liters (L), grams (g), and meters (m). The system is based on multiples of 10, making conversions simple and accurate. In oz to mL conversion, the metric system plays an important role because milliliters provide a consistent way to measure liquid volume.
US vs UK Fluid Ounce (Differences, Similarities)
The US fluid ounce and UK (Imperial) fluid ounce are both units used to measure liquid volume, but they are not exactly the same. The main difference is their size:
- 1 US oz = 29.5735 mL
- 1 UK oz = 28.4131 mL
This means the US fluid ounce is slightly larger than the UK fluid ounce. Both are used for similar purposes like cooking, beverages, and liquid measurements, which is why they are often confused.
The reason they are different comes from history. The US system is based on older British wine measurements, while the UK later standardized its own Imperial system. Because they were developed separately, the values stayed different and were never unified.
For oz to mL conversion, it is important to use the correct formula:
US formula: mL = oz × 29.5735
UK formula: mL = oz × 28.4131
Even though the difference is small, it can affect accuracy in recipes, medicine, and scientific measurements. Always check whether you are using US or UK ounces when converting to milliliters.
US vs UK oz Difference by Percentage
The US fluid ounce is about 4.1% larger than the UK (Imperial) fluid ounce.
Here’s why:
1 US fl oz = 29.5735 mL
1 UK fl oz = 28.4131 mL
Difference:
Absolute difference ≈ 1.1604 mL
Percentage difference:
US oz is slightly bigger
The gap becomes more noticeable as volume increases
Example:
- 8 oz → ~9 mL difference
- 32 oz → ~37 mL difference
- 128 oz → ~148 mL difference
Most common US vs UK fl. oz Questions
Is 1 oz the same in US and UK?
No, 1 oz is not the same. A US fluid ounce equals 29.5735 mL, while a UK (Imperial) fluid ounce equals 28.4131 mL.
What is the difference between US oz and UK oz?
The main difference is in their volume. A US fluid ounce is slightly larger at 29.5735 mL, while a UK fluid ounce is 28.4131 mL.
How many mL in 1 UK fluid ounce?
1 UK (Imperial) fluid ounce equals 28.4131 milliliters (mL).
Why are US and UK ounces different?
The US and UK use different measurement systems. The US follows its own system, while the UK uses the Imperial system, which defines fluid ounces differently.
Oz to mL (Real Life Examples)
Whether you are cooking, taking medicine, or tracking your fitness goals, knowing how to convert ounces to milliliters helps you measure accurately and avoid mistakes.
Cooking and Baking
If you’re trying a recipe from another country you will notice that some use ounces while others use milliliters. This can get very confusing sometimes. For example, 8 oz is about 236 mL, which is close to a standard cup. Converting oz to mL helps you add the right amount of liquids like milk, water, or oil, so your recipe turns out just right.
Medicine and Dosage
Getting the correct dose of medicine is very important. Most liquid medicines are measured in milliliters, but sometimes instructions may include ounces. If you know that 1 oz equals about 29.57 mL, it becomes much easier to measure safely. This small step can help avoid taking too much or too little medicine.
Fitness and Hydration
If you’re trying to stay healthy, you’ve probably heard about drinking enough water daily. Many bottles show ounces, but health advice is often given in milliliters or liters. For example, 16 oz of water is about 473 mL. Converting oz to mL makes it easier to track your water intake and stay properly hydrated.
Oz to mL Conversion FAQs
What is the formula to convert oz to mL?
The formula to convert ounces to milliliters is: mL = oz × 29.5735. Simply multiply the number of ounces by 29.5735 to get the value in milliliters.
How to convert ounces to milliliters manually?
To convert ounces to milliliters manually, multiply the number of ounces by 29.5735. For example, 10 oz × 29.5735 = 295.735 mL.
Why is 1 oz equal to 29.5735 mL?
This value comes from the official US measurement system, where 1 fluid ounce is defined as exactly 29.5735 milliliters.
Is oz bigger than mL?
Yes, 1 ounce is larger than 1 milliliter. One US fluid ounce equals 29.5735 milliliters.
How many mL in a shot (1 oz)?
A standard shot of 1 ounce equals 29.57 milliliters in the US measurement system.
How many mL should I drink daily?
Daily water intake varies, but a common recommendation is about 2000–3000 mL per day depending on age, activity, and health.
Is 500 mL equal to 16 oz?
No, 500 mL is approximately 16.91 oz. While close, it is slightly more than 16 ounces.
Fluid ounce vs milliliter difference
A fluid ounce (oz) is a unit used mainly in the US and UK, while a milliliter (mL) is part of the metric system used worldwide. One US oz equals 29.5735 mL.
Oz vs mL which is more accurate?
Milliliters are generally more accurate because they are part of the metric system, which is standardized and consistent worldwide.
Why use mL instead of oz?
Milliliters are easier to use for precise measurements and are widely accepted globally, making them more reliable than ounces.
Is mL better than oz for measuring liquids?
Yes, milliliters are better for accuracy and consistency, especially in scientific, medical, and international use.