Weights and Measures Conversion Chart

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

Home Learning Center Gemology Reference Charts & MaterialsWeights and Measures Conversion Chart

By International Gem Society, updated on July 24, 2021

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

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