Bonds can also be classified into convertible and non-convertible depending upon whether they carry a conversion feature or not. Convertible bonds are the ones which can be converted into equity shares at the option of the bondholders. In this case, the ratio of conversion (the number of shares exchanged for the converted portion) or alternatively the conversion price (the price at which equity shares are exchanged for the converted portion of the debentures), and the period during which the conversion can be effected are specified at the time of the issue. Convertible bonds can be either fully convertible or partly convertible. In case of partly convertible bonds, the non-converted portion will carry interest until it is repaid as per the provisions in the indenture.