Ounces Conversion

Scales are used to measure weight

The ounce is a unit used to measure weight. Use one of the conversion calculators below to convert to another unit of measure, or read on to learn more about ounces.

Ounce Conversion Calculators

Choose a unit of weight to convert to.

US Customary & Imperial Units
Convert ounces to tons
1 ounce is equal to 3.125E-5 tons
Convert ounces to pounds
1 ounce is equal to 0.0625 pounds
SI Units
Convert ounces to metric tons
1 ounce is equal to 2.835E-5 metric tons
Convert ounces to kilograms
1 ounce is equal to 0.02835 kilograms
Convert ounces to grams
1 ounce is equal to 28.349523 grams
Convert ounces to milligrams
1 ounce is equal to 28,350 milligrams
Other Units
Convert ounces to long tons
1 ounce is equal to 2.7902E-5 long tons
Convert ounces to carats
1 ounce is equal to 141.747616 carats

Ounce Definition and Usage

One ounce is a unit of mass/weight equal to 1/16 of a pound. The common ounce should not be confused with the troy ounce, which is equal to 1/12 of a troy pound.[1]

The ounce is a US customary and imperial unit of weight. Ounces can be abbreviated as oz, for example 1 ounce can be written as 1 oz.

Ounces Measurement Conversion Table

Common ounce values and equivalent imperial and metric weight measurements
ounces tons pounds metric tons long tons kilograms grams milligrams carats
1 oz 0.00003125 t 0.0625 lb 0.00002835 t 0.000027902 lt 0.02835 kg 28.349523 g 28,350 mg 141.747616 ct
2 oz 0.0000625 t 0.125 lb 0.000056699 t 0.000055804 lt 0.056699 kg 56.699046 g 56,699 mg 283.495231 ct
3 oz 0.00009375 t 0.1875 lb 0.000085049 t 0.000083705 lt 0.085049 kg 85.048569 g 85,049 mg 425.242847 ct
4 oz 0.000125 t 0.25 lb 0.000113 t 0.000112 lt 0.113398 kg 113.398093 g 113,398 mg 566.990463 ct
5 oz 0.000156 t 0.3125 lb 0.000142 t 0.00014 lt 0.141748 kg 141.747616 g 141,748 mg 708.738078 ct
6 oz 0.000188 t 0.375 lb 0.00017 t 0.000167 lt 0.170097 kg 170.097139 g 170,097 mg 850.485694 ct
7 oz 0.000219 t 0.4375 lb 0.000198 t 0.000195 lt 0.198447 kg 198.446662 g 198,447 mg 992.233309 ct
8 oz 0.00025 t 0.5 lb 0.000227 t 0.000223 lt 0.226796 kg 226.796185 g 226,796 mg 1,134 ct
9 oz 0.000281 t 0.5625 lb 0.000255 t 0.000251 lt 0.255146 kg 255.145708 g 255,146 mg 1,276 ct
10 oz 0.000313 t 0.625 lb 0.000283 t 0.000279 lt 0.283495 kg 283.495231 g 283,495 mg 1,417 ct
11 oz 0.000344 t 0.6875 lb 0.000312 t 0.000307 lt 0.311845 kg 311.844754 g 311,845 mg 1,559 ct
12 oz 0.000375 t 0.75 lb 0.00034 t 0.000335 lt 0.340194 kg 340.194278 g 340,194 mg 1,701 ct
13 oz 0.000406 t 0.8125 lb 0.000369 t 0.000363 lt 0.368544 kg 368.543801 g 368,544 mg 1,843 ct
14 oz 0.000438 t 0.875 lb 0.000397 t 0.000391 lt 0.396893 kg 396.893324 g 396,893 mg 1,984 ct
15 oz 0.000469 t 0.9375 lb 0.000425 t 0.000419 lt 0.425243 kg 425.242847 g 425,243 mg 2,126 ct
16 oz 0.0005 t 1 lb 0.000454 t 0.000446 lt 0.453592 kg 453.59237 g 453,592 mg 2,268 ct
17 oz 0.000531 t 1.0625 lb 0.000482 t 0.000474 lt 0.481942 kg 481.941893 g 481,942 mg 2,410 ct
18 oz 0.000563 t 1.125 lb 0.00051 t 0.000502 lt 0.510291 kg 510.291416 g 510,291 mg 2,551 ct
19 oz 0.000594 t 1.1875 lb 0.000539 t 0.00053 lt 0.538641 kg 538.640939 g 538,641 mg 2,693 ct
20 oz 0.000625 t 1.25 lb 0.000567 t 0.000558 lt 0.56699 kg 566.990463 g 566,990 mg 2,835 ct

References

  1. James Bucki, Troy Ounce vs. Ounce, The Spruce, https://www.thesprucecrafts.com/troy-ounce-vs-ounce-4588158