Ounce to Microgram Converter
Convert Ounce (oz) to Microgram (µg) instantly. 1 oz = 28,349,523.125 µg.
Mass Converter
26 units available
1 oz = 28,349,523.125 µg
Formula:
µg = oz × 28,349,523.125With your value: 1 oz = 28,349,523.125 µg
How big is that?
Everyday references on a logarithmic scale, all expressed in ounce so you can sanity-check the result.
Other Ounce to Microgram conversions
Ounce to Microgram Conversion Table
| Ounce (oz) | Microgram (µg) |
|---|---|
| 0.5 | 14,174,761.5625 |
| 1 | 28,349,523.125 |
| 2 | 56,699,046.25 |
| 5 | 141,747,615.625 |
| 10 | 283,495,231.25 |
| 15 | 425,242,846.875 |
| 20 | 566,990,462.5 |
| 25 | 708,738,078.125 |
| 50 | 1,417,476,156.25 |
| 100 | 2,834,952,312.5 |
| 250 | 7,087,380,781.25 |
| 500 | 14,174,761,562.5 |
| 1000 | 28,349,523,125 |
Microgram to Ounce Conversion Table
| Microgram (µg) | Ounce (oz) |
|---|---|
| 0.5 | 1.763698e-8 |
| 1 | 3.527396e-8 |
| 2 | 7.054792e-8 |
| 5 | 1.763698e-7 |
| 10 | 3.527396e-7 |
| 15 | 5.291094e-7 |
| 20 | 7.054792e-7 |
| 25 | 8.818490e-7 |
| 50 | 1.763698e-6 |
| 100 | 3.527396e-6 |
| 250 | 8.818490e-6 |
| 500 | 1.763698e-5 |
| 1000 | 3.527396e-5 |
Where these values come from
Every factor on this page is traced to the document that defines it. See the full provenance dataset or our methodology.
Ounce (oz)
Mass
1 avoirdupois ounce = 1/16 lb = 0.028 349 523 125 kg exactly.
Source: International Yard and Pound Agreement of 1959; NIST Federal Register Notice 59-5442
US, UK, Canada, Australia, New Zealand, South Africa · Reviewed 2026-07-01
Microgram (µg)
Mass
Traceable to the kilogram, defined by fixing the Planck constant at 6.626 070 15 × 10⁻³⁴ J·s. Avoirdupois masses derive from the 1959 international pound (0.453 592 37 kg exactly).
Source: BIPM, The International System of Units (SI), 9th edition, 2019 (updated 2024)
Bureau International des Poids et Mesures · Reviewed 2026-07-01
How to Convert Ounce to Microgram
To convert from Ounce (oz) to Microgram (µg), multiply the value by 28,349,523.125.
Formula: µg = oz × 28,349,523.125
Reverse: oz = µg × 3.527396e-8
Step-by-Step Example
- Start with your value in Ounce. For example: 5 oz
- Multiply by the conversion factor: 5 x 28,349,523.125
- The result is: 141,747,615.625 µg
About Ounce
The ounce (oz) equals 1/16 of a pound or approximately 28.35 grams. It is used for food portions and small weight measurements.
Common uses: food portions, postal mail, precious metals.
About Microgram
The microgram (µg) equals one millionth of a gram. Vitamins, hormones and trace contaminants are dosed at this scale.
Fun Fact: Clinical writing spells out "microgram" rather than using µg to avoid dosing errors.
Common uses: pharmacology, vitamin dosing, toxicology.
Frequently Asked Questions
How many Microgram are in 1 Ounce?
There are exactly 28,349,523.125 Microgram in 1 Ounce. This means the conversion factor from Ounce to Microgram is 28,349,523.125.
What is the formula to convert Ounce to Microgram?
The formula to convert Ounce to Microgram is: µg = oz × 28,349,523.125. For example, to convert 10 Ounce to Microgram, you would multiply 10 by 28,349,523.125.
What is a Ounce?
The ounce (oz) equals 1/16 of a pound or approximately 28.35 grams. It is used for food portions and small weight measurements.
What is a Microgram?
The microgram (µg) equals one millionth of a gram. Vitamins, hormones and trace contaminants are dosed at this scale.
What are the common uses of Ounce?
The Ounce is commonly used in food portions, postal mail, precious metals.
Related Mass Conversions
Cite this page
UnitConvertLab. (2026). Ounce to Microgram converter. UnitConvertLab. Retrieved from https://unitconvertlab.com/convert/ounce-to-microgram