proton rest mass = 1.672614E-27 kilogram
Try converting from "proton mass" to AMU (atomic mass unit), as (Roman as), bes (Roman bes), carat troy (troy carat), cotton bale (US), doppelzentner, drachma2 (Greek drachma), dram ap (apothecary dram), dram troy (troy dram), earth mass, Greek obolos, Mexican libra, obol (Greek obol), quintal, scrupulum (Roman scrupulum), short ton, Spanish quintal, UK quintal (British quintal), UK quintal2 (British quintal), wey mass, or any combination of units which equate to "mass" and represent mass.
proton mass = 5.12E-27 as (Roman as), 7.68E-27 bes (Roman bes), 8.36E-24 carat troy (troy carat), 3.69E-29 cental (British cental), 3.90E-25 drachma2 (Greek drachma), 4.30E-25 dram troy (troy dram), 8.16E-24 English carat, 4.10E-27 funt (Russian funt), 2.79E-27 kin (Japanese kin), 3.41E-27 livre (French livre), 3.29E-29 long hundredweight (avoirdupois long hundredweight), 5.16E-22 mite (English mite), .99862322 neutron mass (neutron rest mass), 5.90E-26 oz (ounce), 1.29E-24 scruple (apothecary scruple), 1.47E-24 scrupulum (Roman scrupulum), 3.69E-29 short hundredweight (avoirdupois short hundredweight), 2.63E-28 stone, 4.42E-26 tael (Chinese tael), 3.29E-29 UK quintal2 (British quintal).
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