Mass and Weight · Unit Converter

Convert Ounce to Microgram

Convert ounces to micrograms instantly. 1 ounce = 2.834952e+7 microgram — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Microgram to Ounce converter for the reverse conversion.

Written by Sunith Babu L, Ph.D., Lead Engineer Reviewed by Dr. Ashok Kumar K, Ph.D.
Mass and Weight category 2 min read Published Last reviewed Updated

Units explained

Avoirdupois

Ounce

What is a ounce?

The (avoirdupois) ounce (oz) equals one-sixteenth of a pound, about 28.35 grams.

Origin of the ounce

From Latin 'uncia', meaning a twelfth part.

Where it is used

US food portions, postal weights, and boxing weight classes.

When and where it was developed

Standardized as 1/16 of the international pound from 1959.

Metric / SI

Microgram

What is a microgram?

A microgram (ug) equals 10^-9 kilogram, or one-millionth of a gram.

Origin of the microgram

From the SI prefix 'micro-' (from Greek 'mikros', small).

Where it is used

Trace nutrients, potent drug doses, and environmental contaminant levels.

When and where it was developed

The micro- prefix was incorporated into the SI in 1960.

Ounce to Microgram conversion formula

The relationship between ounces and micrograms:

1 oz = 2.834952e+7 µg
1 µg = 3.527396e-8 oz

To convert ounces to micrograms, multiply the value in ounces by 2.834952e+7. To reverse, multiply micrograms by 3.527396e-8.

How to use this converter

Type a value into the calculator. The result in micrograms updates as you type. Tap a quick value, copy the result with one click, or use the swap arrow to jump straight to the Microgram to Ounce converter for the reverse direction.

Step-by-step: convert ounces to micrograms

  1. Write down the value in ounces (oz).
  2. Multiply that value by the factor 2.834952e+7.
  3. The product is the equivalent value in micrograms (µg).
  4. To reverse, multiply the microgram value by 3.527396e-8.

Worked examples

Example 1 — Convert 1 oz to µg:
1 × 2.834952e+7 = 2.834952e+7 µg

Example 2 — Convert 100 oz to µg:
100 × 2.834952e+7 = 2.834952e+9 µg

Real-world example — Centimeter to wavelength scale

One ounce equals 10 million micrograms. Physics curricula use this kind of conversion to relate everyday measurements to atomic and optical scales.

1 oz × 2.834952e+7 = 2.834952e+7 µg

Real-world example — Small-scale to atomic-scale

One ounce equals 10 million micrograms — useful for physics curricula that relate everyday measurements to atomic and optical scales.

1 oz × 2.834952e+7 = 2.834952e+7 µg

Ounce to Microgram conversion table

Standard reference values for converting ounces to micrograms:

Ounce [oz]Microgram [µg]
0.01283495.231
0.12834952.3100000001
12.834952e+7
25.669905e+7
38.504857e+7
41.133981e+8
51.417476e+8
102.834952e+8
205.669905e+8
308.504857e+8
401.133981e+9
501.417476e+9
1002.834952e+9
5001.417476e+10
10002.834952e+10

Frequently asked questions

How many micrograms is 1 ounce?
1 ounce equals 2.834952e+7 microgram.
How do I convert ounces to micrograms?
Multiply the value in ounces by 2.834952e+7 to get micrograms.
How do I convert micrograms back to ounces?
Multiply the value in micrograms by 3.527396e-8, or use the Microgram to Ounce converter.
How many micrograms is 100 ounces?
100 ounces equals 2.834952e+9 micrograms, because 100 × 2.834952e+7 = 2.834952e+9.

Convert Ounce to other weight units

Show all Ounce conversions
Metric / SI (18 units)
Ounce to Attogram (ag) Ounce to Femtogram (fg) Ounce to Picogram (pg) Ounce to Nanogram (ng) Ounce to Microgram (µg) Ounce to Milligram (mg) Ounce to Centigram (cg) Ounce to Decigram (dg) Ounce to Gram (g) Ounce to Dekagram (dag) Ounce to Hectogram (hg) Ounce to Kilogram (kg) Ounce to Quintal (metric) (q) Ounce to Metric Ton (t) Ounce to Gigagram (Gg) Ounce to Teragram (Tg) Ounce to Petagram (Pg) Ounce to Exagram (Eg)
Avoirdupois (14 units)
Ounce to Grain (gr) Ounce to Dram (avoirdupois) (dr) Ounce to Pound (lb) Ounce to Clove (clove) Ounce to Stone (US) (st) Ounce to Stone (UK) (st) Ounce to Quarter (US) (qr) Ounce to Quarter (UK) (qr) Ounce to Hundredweight (US) (cwt) Ounce to Hundredweight (UK) (cwt) Ounce to Wey (wey) Ounce to Kilopound (kip) (kip) Ounce to Ton (short, US) (sh tn) Ounce to Ton (long, UK) (long tn)
Troy & Apothecary (10 units)
Ounce to Point (1/100 carat) (pt) Ounce to Carat (metric) (ct) Ounce to Scruple (apothecary) (s ap) Ounce to Pennyweight (dwt) Ounce to Momme (mom) Ounce to Mace (mace) Ounce to Dram (apothecary/troy) (dr ap) Ounce to Troy Ounce (oz t) Ounce to Tael (tael) Ounce to Pound (troy/apothecary) (lb t)
Indian / South Asian (6 units)
Ounce to Ratti (ratti) Ounce to Masha (masha) Ounce to Tola (tola) Ounce to Chittack (Chatank) (chittack) Ounce to Seer (Ser) (seer) Ounce to Maund (Mann) (maund)
Scientific / Atomic (9 units)
Ounce to Electron Mass (rest) (me) Ounce to MeV/c2 (MeV/c²) Ounce to Muon Mass (mµ) Ounce to Atomic Mass Unit (u) Ounce to Proton Mass (mp) Ounce to Neutron Mass (mn) Ounce to Deuteron Mass (md) Ounce to Carbon-12 Atom Mass (C-12) Ounce to Planck Mass (mP)
Astronomical (4 units)
Ounce to Lunar Mass (Moon) (M☾) Ounce to Earth's Mass (M⊕) Ounce to Jupiter Mass (MJ) Ounce to Sun's Mass (M☉)
Biblical / Ancient (14 units)
Ounce to Lepton (Biblical Roman) (lepton) Ounce to Quadrans (Biblical Roman) (quadrans) Ounce to Assarion (Biblical Roman) (assarion) Ounce to Gerah (Biblical Hebrew) (gerah) Ounce to Drachma (Biblical Greek) (drachma) Ounce to Denarius (Biblical Roman) (denarius) Ounce to Bekan (Biblical Hebrew) (bekah) Ounce to Didrachma (Biblical Greek) (didrachma) Ounce to Shekel (Biblical Hebrew) (shekel) Ounce to Tetradrachma (Biblical Greek) (tetra) Ounce to Mina (Biblical Greek) (mina) Ounce to Mina (Biblical Hebrew) (mina) Ounce to Talent (Biblical Greek) (talent) Ounce to Talent (Biblical Hebrew) (talent)
Force / Engineering (5 units)
Ounce to Poundal (pdl) Ounce to Ton (assay) (US) (AT) Ounce to Ton (assay) (UK) (AT) Ounce to Kilogram-force square second/meter (hyl) Ounce to Slug (slug)

Sources & references

Conversion factor (1 oz = 2.834952e+7 µg) verified against the following authoritative sources:

Results are provided for general reference. Verify critical measurements against an authoritative standard.