The pKb Calculator is a simple and accurate chemistry tool that helps you calculate the base dissociation constant (Kb) or its logarithmic value, pKb. By entering either Kb or pKb, the calculator instantly converts between the two using the equation pKb = −log₁₀(Kb). It also shows the conjugate acid’s pKa value using the relationship pKa = 14 − pKb at 25°C. This tool is ideal for students, teachers, and chemists studying acid-base equilibria, weak bases, and buffer solutions. Understanding pKb helps determine the strength of a base — the lower the pKb, the stronger the base. Use this calculator to perform fast, precise, and reliable conversions in your acid-base chemistry problems.