Measurement converter

Try converting from "key" to bowling ball, cental (British cental), denarius (Roman denarius), drachma2 (Greek drachma), dram troy (troy dram), electron mass (electron rest mass), funt (Russian funt), grain (avoirdupois grain), gram, hyl, kg (kilogram), kwan (Japanese kwan), long hundredweight (avoirdupois long hundredweight), Mexican libra, obol (Greek obol), oz ap (apothecary ounce), pood (Russian pood), pound, proton mass (proton rest mass), Spanish libra, or any combination of units which equate to "mass" and represent mass.

key = 4.59 bes (Roman bes), 1.65 catty (Chinese catty), 11,037.53 crith, 564.38 dram (avoirdupois dram), 257.21 dram ap (apothecary dram), 257.21 dram troy (troy dram), 1.67E-25 earth mass, 4,878.05 English carat, 15,432.36 grain (avoirdupois grain), 1,397.86 Greek obolos, 101.97 hyl, 1.67 kin (Japanese kin), .26658073 kwan (Japanese kwan), .001 metric ton, 1,377.89 obol (Greek obol), 32.15 oz troy (troy ounce), .06105297 pood (Russian pood), 1,759.68 Roman obolus, .02174184 Spanish quintal, .03882882 talent (Greek talent).