Generally speaking, these values are not used in calculations since, at common concentrations in chemistry, each substance is 100% dissociated.
Acid Name Formula Ka hydroiodic HI 3.2 x 109 hydrobromic HBr 1.0 x 109 perbromic HBrO4 3.2 x 108 perchloric HClO4 1.0 x 108 hydrochloric HCl 1.3 x 107 sulfuric (Ka1) H2SO4 1.0 x 103 nitric HNO3 44
There is significantly less information on Kb values for common strong bases than there is for the Ka for common strong acids. The closest I could find was the following sentence "Bases with pK less than zero are shown as 'strong.' " The following bases are listed as strong:
Base Name Formula Sodium hydroxide NaOH Potassium hydroxide KOH Rubidium hydroxide RbOH Cesium hydroxide CsOH Calcium hydroxide Ca(OH)2 Strontium hydroxide Sr(OH)2 Barium hydroxide Ba(OH)2