Ounces to grams Converter

This weight conversion tool quickly converts ounces to grams with this free online converter. Fast, accurate, and perfect to convert the ounces [o] to grams [g].

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How to Convert Ounces to Grams

To convert ounces to grams, multiply the number of ounces by 28.3495. This conversion factor is based on the international avoirdupois ounce, which is the standard ounce used in the United States and most other countries.

Conversion Formula:

value * 28.3495

Understanding the Conversion

Converting ounces to grams is essential when working with recipes, shipping packages, or handling measurements that use different unit systems. The ounce is an imperial unit of mass, while the gram is a metric unit commonly used worldwide.

One ounce equals approximately 28.3495 grams, which means you multiply the number of ounces by 28.3495 to get the equivalent weight in grams. This conversion is particularly useful in cooking and baking, where recipes from different countries may use ounces or grams, and you need to convert between them for accurate measurements.

The conversion factor of 28.3495 grams per ounce is precise and based on international standards. This ensures that your conversions are accurate whether you are measuring ingredients for a recipe, calculating shipping costs, or working on scientific projects that require precise weight measurements.

Conversion Examples

Example: Convert 8 ounces to grams

Step 1: Identify the conversion factor. Since 1 ounce = 28.3495 grams, multiply ounces by 28.3495.
Step 2: Multiply 8 ounces by 28.3495.
Step 3: 8 × 28.3495 = 226.796 grams

8 ounces = 226.796 grams

This shows a common conversion used in cooking, as 8 ounces is often used in recipes.

Example: Convert 16 ounces to grams

Step 1: Use the conversion factor: 1 ounce = 28.3495 grams.
Step 2: Multiply 16 ounces by 28.3495.
Step 3: 16 × 28.3495 = 453.592 grams

16 ounces = 453.592 grams

This demonstrates that 16 ounces equals 1 pound, which is approximately 454 grams.

Example: Convert 1 ounce to grams

Step 1: Conversion factor: 1 ounce = 28.3495 grams.
Step 2: 1 ounce × 28.3495
Step 3: Result = 28.3495 grams

1 ounce = 28.3495 grams

This shows the base conversion factor, useful for quick mental calculations.

Conversion Formula

The formula to convert ounces to grams is:

ounces × 28.3495 = grams

Mathematically, you can write this as:


ounces × 28.3495 grams/ounce = grams

The ounce units cancel out, leaving you with grams.

Conversion Chart

Ounces	Grams
1	28.3495
2	56.699
4	113.398
8	226.796
16	453.592
32	907.184

Quick Conversion Tip

Quick conversion: Multiply ounces by 28.35 (approximately) to get grams. For example, 1 ounce ≈ 28.35 grams, 8 ounces ≈ 227 grams, 16 ounces ≈ 454 grams.

Unit Definitions

Ounce (oz)

An ounce is an imperial unit of mass. The avoirdupois ounce, used in the United States and most countries, equals approximately 28.3495 grams.

1 ounce = 28.3495 grams = 0.0625 pounds = 0.0283495 kilograms

Gram (g)

A gram is a metric unit of mass equal to one thousandth of a kilogram. It is widely used in science, cooking, and everyday measurements.

1 gram = 0.001 kilograms = 1000 milligrams = 0.035274 ounces

Common Use Cases

Cooking and baking: Convert ounces to grams when following recipes from different countries or when using kitchen scales that display in different units.
Shipping and logistics: Convert package weights from ounces to grams for international shipping calculations and customs declarations.
Nutrition and health: Convert food weights from ounces to grams when tracking portion sizes or reading nutrition labels from different regions.
Jewelry and precious metals: Convert weights of gold, silver, or gemstones from ounces to grams for pricing and trading purposes.
Science and laboratory work: Convert measurements between imperial and metric systems when working with international research data.
Retail and commerce: Convert product weights for inventory management and pricing when dealing with suppliers or customers in different countries.