Provided is an antimicrobial glass which can be accommodated in a narrow accommodation space of an antimicrobial water unit for supplying antimicrobial water to a washing tub of a washing machine, and also can effectively suppress an occurrence of black mold or the like in a washing tub and can effectively protect a subject for washing against microbes while suppressing the coloration of the subject.As an antimicrobial glass for exhibiting an antimicrobial effect by releasing silver ions when brought into direct contact with water, when the total amount is 100% by weight, the content of Ag2O has a value within the range of above 5% by weight but less than 10% by weight, the content of P2O5 and CaO has a value within a predetermined range, the content of ZnO has a value of below 10% by weight, the content of K2O, Al2O3, and MgO has a value within a predetermined range, and the antimicrobial glass has a tablet shape with a maximum diameter value in a predetermined range.
