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