Buffer pH Calculator

Calculate buffer pH using the Henderson-Hasselbalch equation: pH = pKa + log([base]/[acid]). Find pH, base/acid ratio, individual concentrations, or pKa. Features 12 common buffer systems (Acetate, Phosphate, Tris, Carbonate, etc.), concentration units (M, mM, μM, nM, pM), and buffer capacity evaluation. Perfect for chemistry and biology students.