The Ka Calculator is a simple and accurate chemistry tool that helps you calculate the acid dissociation constant (Ka) or its logarithmic form, pKa. By entering either Ka or pKa, this calculator instantly converts between the two and also provides the conjugate base’s pKb using the relationship pKa + pKb = 14 at 25°C. It is an essential resource for students, teachers, and chemists studying acid-base equilibria, weak acids, and buffer solutions. Understanding Ka and pKa values helps determine the strength of an acid — the lower the pKa, the stronger the acid. Use this tool to perform quick and precise calculations in your chemistry experiments or academic work.