Mass and Weight · Unit Converter

Convert Gram to Ounce

Convert grams to ounces instantly. 1 gram = 0.035273962 ounce — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Ounce to Gram 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

Metric / SI

Gram

What is a gram?

The gram (g) equals one-thousandth of a kilogram.

Origin of the gram

From Late Latin 'gramma', a small weight or scruple.

Where it is used

The everyday metric unit for food, medicine, and small objects.

When and where it was developed

Defined in 1795 as the mass of one cubic centimeter of water at melting point.

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.

Gram to Ounce conversion formula

The relationship between grams and ounces:

1 g = 0.035273962 oz
1 oz = 28.3495231 g

To convert grams to ounces, multiply the value in grams by 0.035273962. To reverse, multiply ounces by 28.3495231.

How to use this converter

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

Step-by-step: convert grams to ounces

  1. Write down the value in grams (g).
  2. Multiply that value by the factor 0.035273962.
  3. The product is the equivalent value in ounces (oz).
  4. To reverse, multiply the ounce value by 28.3495231.

Worked examples

Example 1 — Convert 1 g to oz:
1 × 0.035273962 = 0.035273962 oz

Example 2 — Convert 100 g to oz:
100 × 0.035273962 = 3.5273961981 oz

Real-world example — Postcard and small-object dimensions

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

5 g × 0.035273962 = 0.1763698099 oz

Real-world example — Ruler-scale measurements

A 30-gram school ruler converts cleanly to ounces — useful when buying a desk accessory from a retailer whose product specs use a different unit.

30 g × 0.035273962 = 1.0582188594 oz

Real-world example — Hardware-scale dimensions

A 10-gram fastener or component is about as long as a thumbnail. Mechanics and DIY enthusiasts convert between grams and ounces daily when mixing metric and imperial tools.

10 g × 0.035273962 = 0.3527396198 oz

Gram to Ounce conversion table

Standard reference values for converting grams to ounces:

Gram [g]Ounce [oz]
0.010.0003527396
0.10.0035273962
10.035273962
20.070547924
30.1058218859
40.1410958479
50.1763698099
100.3527396198
200.7054792396
301.0582188594
401.4109584792
501.763698099
1003.5273961981
50017.6369809903
100035.2739619807

Frequently asked questions

How many ounces is 1 gram?
1 gram equals 0.035273962 ounce.
How do I convert grams to ounces?
Multiply the value in grams by 0.035273962 to get ounces.
How do I convert ounces back to grams?
Multiply the value in ounces by 28.3495231, or use the Ounce to Gram converter.
How many ounces is 100 grams?
100 grams equals 3.5273961981 ounces, because 100 × 0.035273962 = 3.5273961981.

Convert Gram to other weight units

Show all Gram conversions
Metric / SI (17 units)
Gram to Attogram (ag) Gram to Femtogram (fg) Gram to Picogram (pg) Gram to Nanogram (ng) Gram to Microgram (µg) Gram to Milligram (mg) Gram to Centigram (cg) Gram to Decigram (dg) Gram to Dekagram (dag) Gram to Hectogram (hg) Gram to Kilogram (kg) Gram to Quintal (metric) (q) Gram to Metric Ton (t) Gram to Gigagram (Gg) Gram to Teragram (Tg) Gram to Petagram (Pg) Gram to Exagram (Eg)
Avoirdupois (15 units)
Gram to Grain (gr) Gram to Dram (avoirdupois) (dr) Gram to Ounce (oz) Gram to Pound (lb) Gram to Clove (clove) Gram to Stone (US) (st) Gram to Stone (UK) (st) Gram to Quarter (US) (qr) Gram to Quarter (UK) (qr) Gram to Hundredweight (US) (cwt) Gram to Hundredweight (UK) (cwt) Gram to Wey (wey) Gram to Kilopound (kip) (kip) Gram to Ton (short, US) (sh tn) Gram to Ton (long, UK) (long tn)
Troy & Apothecary (10 units)
Gram to Point (1/100 carat) (pt) Gram to Carat (metric) (ct) Gram to Scruple (apothecary) (s ap) Gram to Pennyweight (dwt) Gram to Momme (mom) Gram to Mace (mace) Gram to Dram (apothecary/troy) (dr ap) Gram to Troy Ounce (oz t) Gram to Tael (tael) Gram to Pound (troy/apothecary) (lb t)
Indian / South Asian (6 units)
Gram to Ratti (ratti) Gram to Masha (masha) Gram to Tola (tola) Gram to Chittack (Chatank) (chittack) Gram to Seer (Ser) (seer) Gram to Maund (Mann) (maund)
Scientific / Atomic (9 units)
Gram to Electron Mass (rest) (me) Gram to MeV/c2 (MeV/c²) Gram to Muon Mass (mµ) Gram to Atomic Mass Unit (u) Gram to Proton Mass (mp) Gram to Neutron Mass (mn) Gram to Deuteron Mass (md) Gram to Carbon-12 Atom Mass (C-12) Gram to Planck Mass (mP)
Astronomical (4 units)
Gram to Lunar Mass (Moon) (M☾) Gram to Earth's Mass (M⊕) Gram to Jupiter Mass (MJ) Gram to Sun's Mass (M☉)
Biblical / Ancient (14 units)
Gram to Lepton (Biblical Roman) (lepton) Gram to Quadrans (Biblical Roman) (quadrans) Gram to Assarion (Biblical Roman) (assarion) Gram to Gerah (Biblical Hebrew) (gerah) Gram to Drachma (Biblical Greek) (drachma) Gram to Denarius (Biblical Roman) (denarius) Gram to Bekan (Biblical Hebrew) (bekah) Gram to Didrachma (Biblical Greek) (didrachma) Gram to Shekel (Biblical Hebrew) (shekel) Gram to Tetradrachma (Biblical Greek) (tetra) Gram to Mina (Biblical Greek) (mina) Gram to Mina (Biblical Hebrew) (mina) Gram to Talent (Biblical Greek) (talent) Gram to Talent (Biblical Hebrew) (talent)
Force / Engineering (5 units)
Gram to Poundal (pdl) Gram to Ton (assay) (US) (AT) Gram to Ton (assay) (UK) (AT) Gram to Kilogram-force square second/meter (hyl) Gram to Slug (slug)

Sources & references

Conversion factor (1 g = 0.035273962 oz) verified against the following authoritative sources:

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