Ounce US to Gram Converter

1 Ounce US = 28.349523125 Gram
Ounce US (oz) ➜ Gram (g)
 
oz

Ounce US vs Gram Comparison Chart

Source - Ounce USTarget - Gram

Ounce US (oz) - Definition and Overview

What is Ounce US?

The international avoirdupois ounce(oz) is exactly 28.349523125 gram. This is the United States customary and British imperial ounce. It is primarily used in the United States to measure packaged foods and food portions, postal items ect.

Summary

  • The international avoirdupois ounce (oz) is a unit of mass equal to exactly 28.349523125 grams
  • It is used in the United States customary and British imperial systems
  • The ounce is primarily used in the United States to measure packaged foods, food portions, postal items, and more.

Gram (g) - Definition and Overview

What is Gram?

The gram(g) is a unit of mass in the metric system. It was originally defined in 1795 as -the absolute weight of a volume of pure water equal to the cube of the hundredth part of a metre(1 cubic centimeter) , at the temperature of melting ice.

Summary

  • A gram is a unit of mass in the metric system
  • It was originally defined in 1795 as the absolute weight of a volume of pure water equal to the cube of the hundredth part of a meter (1 cubic centimeter) at the temperature of melting ice
  • The symbol for gram is g
  • The gram is commonly used worldwide in various fields, including science, cooking, medicine, and trade.

How to Convert Ounce US to Gram?

1 Ounce US is equal to 28.349523125 Gram. To convert Ounce US to Gram, use this simple formula:

Gram = Ounce US x 28.349523125

So, just multiply the number of Ounce US by 28.349523125 to get equivalent value in Gram.

Example 1:

Convert 5 Ounce US to Gram
5 x 28.349523125 = 141.747615625 Gram

Example 2:

Convert 7.5 Ounce US to Gram
7.5 x 28.349523125 = 212.6214234375 Gram

Author Information

Rajesh V U photo

Rajesh V U

Full-Stack Developer & Storage Technologist | Creator of UnitSmash.com
Last updated: June 1, 2026

I am a Storage Technologist with strong experience in enterprise storage systems, Angular development, and web-based tools. I enjoy building practical calculators, converters, and utilities, and I also create original cartoons. I share my tools, articles, and creative work on my personal website, rajeshvu.com.