Weights and Measures Conversion Chart

Printable chart to convert weights and measures including Carats, Grams, Kilograms, Ounces, Pounds and Troy Ounces Pounds and Pennyweights.

0
HomeLearning CenterGemologyReference Charts & MaterialsWeights and Measures Conversion Chart
By International Gem Society
1″ = 25.4 mm1 mm = .039″

 

 CaratsGramsKilogramsOunces
Avoirdupois		Pounds
Avoirdupois		Ounces
Troy		Pounds
Troy		Pennyweights
Troy
Carats10.20.00020.00710.00044.0064300053587.776
Grams510.0010.03530.0022.03215.0026791.555
Kilograms5,0001,00013532.232.152.6790.001555
Ounces
Avoirdupois		141.7528.3.002830010.0625.9115.075950.05486
Pounds
Avoirdupois		2,267.95453.590.454545516114.581.2150.003429
Ounces
Troy		155.531.10.03111.0970.068571.083330.05
Pounds
Troy		1,866373.2.373213.17.82291210.004167
Pennyweights
Troy		7.7761.555.001555.05486.003429.05.0041671

WEIGHTS & MEASURES CONVERSION CHART

Compliments ofThe International Gem Society

International Gem Society

View All Articles

Related Articles

More Articles
Standard Gem Sizes Chart

Standard Gem Sizes Chart

Will your gem fit in a standard setting? Use this chart of standard gem sizes for popular cuts and also...
Read More
Birthstone Chart

Birthstone Chart

What are the birthstones by month? January is garnet, February is amethyst, March is aquamarine, April is diamond, May is...
Read More
Specific Gravity Values of Selected Gems

Specific Gravity Values of Selected Gems

Measuring specific gravity helps gemologists identify gemstones. The following table lists the specific gravity values for a variety of gem...
Read More
The Mohs Hardness Scale and Chart for Select Gems

The Mohs Hardness Scale and Chart for Select Gems

The Mohs hardness scale measures a mineral's resistance to scratching. Find the traditional scale here and a chart of select...
Read More

Latest Articles

More Articles
Classic Engagement Ring StonesPastel purple sapphire</a>, 1.08 cts, 5.8 mm, round cut, Sri Lanka. © <a href=https://www.gemsociety.org/article/weights-and-measures-conversion-chart/"https://www.thegemtrader.com/">The Gem Trader</a>. Used with permission." src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" decoding="async" data-nimg="responsive" style="position:absolute;top:0;left:0;bottom:0;right:0;box-sizing:border-box;padding:0;border:none;margin:auto;display:block;width:0;height:0;min-width:100%;max-width:100%;min-height:100%;max-height:100%;object-fit:cover;object-position:50% 50%"/>

Classic Engagement Ring Stones

Emerald, ruby, sapphire, and diamond are the most popular choices for classic engagement ring stones. Learn more about these traditional...
Read More
Broken Bangle — The Blunder-Besmirched History of Jade Nomenclature: Book Review

Broken Bangle — The Blunder-Besmirched History of Jade Nomenclature: Book Review

Is fei cui a better term for "pyroxene jade" than jadeite? Jeffery Bergman reviews Broken Bangle, a new book on...
Read More
Cuprite Value, Price, and Jewelry InformationJoel E. Arem</a>, PhD, FGA. Used with permission." src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" decoding="async" data-nimg="responsive" style="position:absolute;top:0;left:0;bottom:0;right:0;box-sizing:border-box;padding:0;border:none;margin:auto;display:block;width:0;height:0;min-width:100%;max-width:100%;min-height:100%;max-height:100%;object-fit:cover;object-position:50% 50%"/>

Cuprite Value, Price, and Jewelry Information

One of the rarest of all facetable gems, cut cuprites can show magnificent deep red color. However, these beautiful stones...
Read More
Gemstone Radiation TreatmentPhoto courtesy of <a href=https://www.gemsociety.org/article/weights-and-measures-conversion-chart/"https://www.liveauctioneers.com/">liveauctioneers.com and <a href=https://www.gemsociety.org/article/weights-and-measures-conversion-chart/"https://www.liveauctioneers.com/auctioneer/1081/eros-auctions-inc/">Eros Auctions, Inc</a>." src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" decoding="async" data-nimg="responsive" style="position:absolute;top:0;left:0;bottom:0;right:0;box-sizing:border-box;padding:0;border:none;margin:auto;display:block;width:0;height:0;min-width:100%;max-width:100%;min-height:100%;max-height:100%;object-fit:cover;object-position:50% 50%"/>

Gemstone Radiation Treatment

Gemstone radiation is a common but little understood technique for altering colors. Learn how it works and what gems usually...
Read More

Latest Community Discussions

Tanzanian Corundum

Tanzanian Corundum

Read More
Is This a Topazolite Garnet?

Is This a Topazolite Garnet?

Read More
Nigerian Gemstones

Nigerian Gemstones

Read More
Is This an Opal?

Is This an Opal?

Read More

Never Stop Learning

When you join the IGS community, you get trusted diamond & gemstone information when you need it.

Become a Member

Get Gemology Insights

Get started with the International Gem Society’s free guide to gemstone identification. Join our weekly newsletter & get a free copy of the Gem ID Checklist!