The Titration Calculator determines the unknown concentration of an acid or base using the neutralization formula M1V1=M2V2M_1V_1 = M_2V_2M1​V1​=M2​V2​, where M1M_1M1​ and V1V_1V1​ are the molarity and volume of the acid, and M2M_2M2​ and V2V_2V2​ are those of the base. By entering three known values, the calculator automatically finds the fourth unknown (either the acid or base concentration). This tool is useful for students and chemists during acid–base titration experiments to precisely determine solution concentrations at the equivalence point.