Weights and Measures Conversion Chart
Printable chart to convert weights and measures including Carats, Grams, Kilograms, Ounces, Pounds and Troy Ounces Pounds and Pennyweights.
By International Gem Society, updated on
| 1″ = 25.4 mm | 1 mm = .039″ |
| Carats | Grams | Kilograms | Ounces Avoirdupois | Pounds Avoirdupois | Ounces Troy | Pounds Troy | Pennyweights Troy | |
| Carats | 1 | 0.2 | 0.0002 | 0.0071 | 0.00044 | .00643 | 0005358 | 7.776 |
| Grams | 5 | 1 | 0.001 | 0.0353 | 0.0022 | .03215 | .002679 | 1.555 |
| Kilograms | 5,000 | 1,000 | 1 | 353 | 2.2 | 32.15 | 2.679 | 0.001555 |
| Ounces Avoirdupois | 141.75 | 28.3 | .0028300 | 1 | 0.0625 | .9115 | .07595 | 0.05486 |
| Pounds Avoirdupois | 2,267.95 | 453.59 | 0.4545455 | 16 | 1 | 14.58 | 1.215 | 0.003429 |
| Ounces Troy | 155.5 | 31.1 | 0.0311 | 1.097 | 0.06857 | 1 | .08333 | 0.05 |
| Pounds Troy | 1,866 | 373.2 | .3732 | 13.17 | .8229 | 12 | 1 | 0.004167 |
| Pennyweights Troy | 7.776 | 1.555 | .001555 | .05486 | .003429 | .05 | .004167 | 1 |
WEIGHTS & MEASURES CONVERSION CHART
Compliments ofThe International Gem Society
International Gem Society
Related Articles
Bead and Necklace Size Charts
Whether you’re a novice bead jewelry maker or just shopping for necklaces, these bead and necklace size charts and links...
Read More
Gem Structure Table
How does a gem's crystal system affect its properties? Consult our gem structure table to learn more about selected gemstones....
Read More
Table of Gems Ordered by Crystal System
This table contains a selection of minerals gemologists may encounter as jewelry stones or gem specimens. The gems are sorted...
Read More
Birthstone Chart
What are the birthstones by month? January is garnet, February is amethyst, March is aquamarine, April is diamond, May is...
Read More
Latest Articles
800 Years of Mogok: A Celebration in Tenuous Times
As Mogok, Myanmar prepares to celebrate its 800th anniversary, the inhabitants of this prolific gem producing region face an uncertain...
Read More
What is the Average Gemstone Faceting Yield?
What’s the average gemstone faceting yield from a single piece of rough? Learn how to estimate how much material you’ll...
Read More
Pyroxmangite Value, Price, and Jewelry Information
Pyroxmangite grains are rare, seldom clean enough to facet, and difficult to cut. However, when cut, they are extremely beautiful...
Read More
How to Identify Emerald Simulants and Synthetics
Gemologists can separate natural emeralds from emerald simulants and synthetics. Learn about the most common tools and techniques for this....
Read More
Never Stop Learning
When you join the IGS community, you get trusted diamond & gemstone information when you need it.
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!