Pennyweight is a traditional unit of measurement used in the valuable metals market. It originated as a unit of the troy weight system in 1fifth Century England also and remains the standard for valuing priceless metals this particular day.

You are watching: How many pennyweight in a troy ounce

During 1fifth Century England also, the weight of an English penny was specifically 1/20th of a troy ounce and 1/240th of a troy pound of sterling silver. As such, tbelow are 20 pennyweights in a troy ounce and also 12 troy ounces in a troy pound.

Although the exact same grain is provided in both the troy weight device and also the more common avoirdupois system (offered in the United States), a troy ounce is heavier than an avoirdupois ounce, and also a troy pound is lighter than an avoirdupois pound. Tbelow are 20 pennyweights in a troy ounce, compared to 31.1 grams in a troy ounce.

With prices set per troy ounce by the London resolve, calculating a pennyweight price on the spot can be tricky. To help, we’ve provided our pennyweight calculator and also conversion chart listed below. Use these devices to assist determine the worth of your priceless steels.

Pennyweight Calculator

Use our pennyweight calculator to convert the weight of your precious metals into pennyweights (dwt).

An advanced version of this pennyweight calculator, which gives payout quotes, is accessible to our customers who register for an account with us. From the largest lot to the smallest repertoire of scrap jewelry, carry out us via your call indevelopment and we’ll follow up with a quote. Call us this day 212-398-1454 to talk about hedging choices or sheight by and visit us in the Diamond District. Our headquarters are at 45 West 47th Street (Exchange).

Pennyweight Conversion Chart

Need to transform pennyweights to grams? Grams to troy ounces? Troy ounces to pennyweights? Downfill your print high quality (pdf) pennyweight conversion chart from Manhattan Gold & Silver.

See more: Why Do Most Elements Tend To Form Compounds, And Mixtures, Elements, Compounds, And Mixtures

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 troy 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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