Ounce US to Milligram Converter

1 Ounce US = 28349.523125 Milligram
Ounce US (oz) ➜ Milligram (mg)
 
oz

Ounce US vs Milligram Comparison Chart

Source - Ounce USTarget - Milligram

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.

Milligram (mg) - Definition and Overview

What is Milligram?

Milligram is a unit of for measuring weight in the metric system equal to one thousandth of a gram. Its abbreviated as mg.

Summary

  • A milligram is a unit of mass equal to one thousandth (1/1,000) of a gram
  • It is often used in medicine and pharmacy to measure doses of medication
  • The symbol for milligram is mg.

How to Convert Ounce US to Milligram?

1 Ounce US is equal to 28349.523125 Milligram. To convert Ounce US to Milligram, use this simple formula:

Milligram = Ounce US x 28349.523125

So, just multiply the number of Ounce US by 28349.523125 to get equivalent value in Milligram.

Example 1:

Convert 5 Ounce US to Milligram
5 x 28349.523125 = 141747.615625 Milligram

Example 2:

Convert 7.5 Ounce US to Milligram
7.5 x 28349.523125 = 212621.4234375 Milligram

Complete List of Ounce US Converters

  1. Ounce US to Aana
  2. Ounce US to Bhori
  3. Ounce US to Baht
  4. Ounce US to Carat
  5. Ounce US to Don
  6. Ounce US to Grain
  7. Ounce US to Gram
  8. Ounce US to Hong Kong Tael
  9. Ounce US to Kilogram
  10. Ounce US to Microgram
  11. Ounce US to Milligram
  12. Ounce US to Masha
  13. Ounce US to Mesghal
  14. Ounce US to Ounce US
  15. Ounce US to Pavan
  16. Ounce US to Pound
  17. Ounce US to Ratti
  18. Ounce US to Stone US
  19. Ounce US to Stone UK
  20. Ounce US to Tola
  21. Ounce US to Troy Ounce
  22. Ounce US to Tonne Metric
  23. Ounce US to Tonne US
  24. Ounce US to Tonne UK

Complete List of Milligram Converters

  1. Milligram to Aana
  2. Milligram to Bhori
  3. Milligram to Baht
  4. Milligram to Carat
  5. Milligram to Don
  6. Milligram to Grain
  7. Milligram to Gram
  8. Milligram to Hong Kong Tael
  9. Milligram to Kilogram
  10. Milligram to Microgram
  11. Milligram to Milligram
  12. Milligram to Masha
  13. Milligram to Mesghal
  14. Milligram to Ounce US
  15. Milligram to Pavan
  16. Milligram to Pound
  17. Milligram to Ratti
  18. Milligram to Stone US
  19. Milligram to Stone UK
  20. Milligram to Tola
  21. Milligram to Troy Ounce
  22. Milligram to Tonne Metric
  23. Milligram to Tonne US
  24. Milligram to Tonne UK

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.