This calculator allows you to convert from Pound (troy or apothecary) to Electron mass (rest) and in a reverse direction. To convert from Pound (troy or apothecary) to Electron mass (rest), enter the amount of Pound (troy or apothecary) into the first input and to convert from Electron mass (rest) to Pound (troy or apothecary), enter the amount of Electron mass (rest) into the second input.