Just enter your weight in either kilograms or pounds. In some browsers, after entering your weight you may have to click outside the text entry box to make the calculation work. Elements for which there are no data will always give a value of zero for the weight, no matter what you put in the weight box. Here are a few notes about the hazards and risks associated with potassium. Potassium metal is a major fire risk since it catches fire when reacting with water.
Potassium salts are extremely toxic when injected.