Mass and Weight · Unit Converter

Convert Ounce to Centigram

Convert ounces to centigrams instantly. 1 ounce = 2834.95231 centigram — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Centigram 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

Centigram

What is a centigram?

A centigram (cg) equals 0.00001 kilogram, or 0.01 gram.

Origin of the centigram

From the SI prefix 'centi-' (from Latin 'centum', hundred).

Where it is used

Used in pharmacology and analytical chemistry.

When and where it was developed

Part of the original metric system of 1795.

Ounce to Centigram conversion formula

The relationship between ounces and centigrams:

1 oz = 2834.95231 cg
1 cg = 0.0003527396 oz

To convert ounces to centigrams, multiply the value in ounces by 2834.95231. To reverse, multiply centigrams by 0.0003527396.

How to use this converter

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

Step-by-step: convert ounces to centigrams

  1. Write down the value in ounces (oz).
  2. Multiply that value by the factor 2834.95231.
  3. The product is the equivalent value in centigrams (cg).
  4. To reverse, multiply the centigram value by 0.0003527396.

Worked examples

Example 1 — Convert 1 oz to cg:
1 × 2834.95231 = 2834.95231 cg

Example 2 — Convert 100 oz to cg:
100 × 2834.95231 = 283495.231 cg

Real-world example — Adjacent small-scale precision

One ounce equals 1,000 centigrams — the standard sub-millimeter precision conversion that materials engineers use whenever they switch between bulk material thickness specs (larger unit) and surface-finish characteristics (smaller unit).

1 oz × 2834.95231 = 2834.95231 cg

Real-world example — Adjacent metric sub-units

One ounce equals 1,000 centigrams. Engineers move between these scales constantly: PCB feature sizes in the larger unit, wire-bond diameters in the smaller.

1 oz × 2834.95231 = 2834.95231 cg

Ounce to Centigram conversion table

Standard reference values for converting ounces to centigrams:

Ounce [oz]Centigram [cg]
0.0128.3495231
0.1283.495231
12834.95231
25669.90462
38504.85693
411339.80924
514174.76155
1028349.5231
2056699.0462
3085048.5693
40113398.0924
50141747.6155
100283495.231
5001417476.1549999998
10002834952.3099999996

Frequently asked questions

How many centigrams is 1 ounce?
1 ounce equals 2834.95231 centigram.
How do I convert ounces to centigrams?
Multiply the value in ounces by 2834.95231 to get centigrams.
How do I convert centigrams back to ounces?
Multiply the value in centigrams by 0.0003527396, or use the Centigram to Ounce converter.
How many centigrams is 100 ounces?
100 ounces equals 283495.231 centigrams, because 100 × 2834.95231 = 283495.231.

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 = 2834.95231 cg) verified against the following authoritative sources:

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