Mass and Weight · Unit Converter

Convert Ounce to Hundredweight (US)

Convert ounces to hundredweights (us) instantly. 1 ounce = 0.000625 hundredweight (us) — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Hundredweight (US) 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.

Avoirdupois

Hundredweight (US)

What is a hundredweight (us)?

The US (short) hundredweight equals 100 pounds, about 45.36 kilograms.

Origin of the hundredweight (us)

The American 'hundred'-pound commercial weight (also called the cental).

Where it is used

US commodity trade in grain, livestock feed, and produce.

When and where it was developed

Standardized at 100 pounds in US customary units.

Ounce to Hundredweight (US) conversion formula

The relationship between ounces and hundredweights (us):

1 oz = 0.000625 cwt
1 cwt = 1600.000001411 oz

To convert ounces to hundredweights (us), multiply the value in ounces by 0.000625. To reverse, multiply hundredweights (us) by 1600.000001411.

How to use this converter

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

Step-by-step: convert ounces to hundredweights (us)

  1. Write down the value in ounces (oz).
  2. Multiply that value by the factor 0.000625.
  3. The product is the equivalent value in hundredweights (us) (cwt).
  4. To reverse, multiply the hundredweight (us) value by 1600.000001411.

Worked examples

Example 1 — Convert 1 oz to cwt:
1 × 0.000625 = 0.000625 cwt

Example 2 — Convert 100 oz to cwt:
100 × 0.000625 = 0.0624999999 cwt

Real-world example — Hardware-scale dimensions

A 10-ounce fastener or component is about as long as a thumbnail. Mechanics and DIY enthusiasts convert between ounces and hundredweights (us) daily when mixing metric and imperial tools.

10 oz × 0.000625 = 0.00625 cwt

Real-world example — Postcard and small-object dimensions

A postcard is about 5 ounces wide. Converting to hundredweights (us) is essential for international postal addressing forms that ask for dimensions in different units across countries.

5 oz × 0.000625 = 0.003125 cwt

Real-world example — Ruler-scale measurements

A 30-ounce school ruler converts cleanly to hundredweights (us) — useful when buying a desk accessory from a retailer whose product specs use a different unit.

30 oz × 0.000625 = 0.01875 cwt

Ounce to Hundredweight (US) conversion table

Standard reference values for converting ounces to hundredweights (us):

Ounce [oz]Hundredweight (US) [cwt]
0.016.25e-6
0.16.25e-5
10.000625
20.00125
30.001875
40.0025
50.003125
100.00625
200.0125
300.01875
400.025
500.03125
1000.0624999999
5000.3124999997
10000.6249999994

Frequently asked questions

How many hundredweights (us) is 1 ounce?
1 ounce equals 0.000625 hundredweight (us).
How do I convert ounces to hundredweights (us)?
Multiply the value in ounces by 0.000625 to get hundredweights (us).
How do I convert hundredweights (us) back to ounces?
Multiply the value in hundredweights (us) by 1600.000001411, or use the Hundredweight (US) to Ounce converter.
How many hundredweights (us) is 100 ounces?
100 ounces equals 0.0624999999 hundredweights (us), because 100 × 0.000625 = 0.0624999999.

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 = 0.000625 cwt) verified against the following authoritative sources:

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