Pennyweight is a typical unit of measurement provided in the precious steels industry. It originated as a unit of the trojan weight mechanism in 15th Century England and remains the standard for valuing precious metals today.

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During 15th Century England, the load of one English penny was specifically 1/20th the a troy ounce and also 1/240th that a trojan pound that sterling silver. Therefore, there are 20 pennyweights in a troy ounce and also 12 troy ounces in a troy pound.

Although the very same grain is supplied in both the trojan weight system and the an ext common avoirdupois device (used in the unified States), a trojan ounce is heavier 보다 an avoirdupois ounce, and a trojan pound is lighter 보다 an avoirdupois pound. There are 20 pennyweights in a trojan ounce, compared to 31.1 grams in a trojan ounce.

With prices set per troy ounce by the London fix, calculating a pennyweight price on the spot deserve to be tricky. Come help, we’ve listed our pennyweight calculator and also conversion graph below. Usage these tools to help determine the value of your valuable metals.

Pennyweight Calculator

Use our pennyweight calculator to transform the load of your valuable metals right into pennyweights (dwt).

An advanced version of this pennyweight calculator, which gives payout quotes, is obtainable to our client who register for an account through us. Indigenous the largest lot come the smallest repertoire of scrap jewelry, provide us with your contact information and also we’ll follow up through a quote. Contact us this day 212-398-1454 to comment on hedging options or protect against by and also visit united state in the Diamond District. Our headquarters are at 45 West 47th Street (Exchange).

Pennyweight switch Chart

Need to convert pennyweights come grams? Grams to troy ounces? troy ounces to pennyweights? Download your publish quality (pdf) pennyweight conversion graph from Manhattan yellow & Silver.

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PennyweightGramsKilogramsGrains weightTroy ouncesTroy PoundsAvoirdupois ouncesAvoirdupois poundsKarats
1 pennyweight11.5520.0016240.050.0041666670.05490.0034287.77587
1 gram0.6410.00115.430.03220.0026792410.03530.0022045
1 kilogram643.01100011543232.1512.6792235.2742.204625000
1 grain0.040.060.0000610.0020.0001730.02290.0001420.323995
1 trojan oz2031.1040.0311548010.0833331.09710.068571155.517
1 troy lb240373.240.3732576012113.1660.8228571866.208
1 oz avoid18.23028.350.0284437.520.9120.07595410.062499141.747
1 lb avoid291.68453.590.45367000.3214.5831.215271612267.961
1 karat0.130.20.00023.090.006430.0005350.007050.000441



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