The Enthalpy Calculator determines the change in enthalpy (ΔH\Delta HΔH) using the relationship ΔH=qp\Delta H = q_pΔH=qp​, where qpq_pqp​ is the heat exchanged at constant pressure. By entering either the heat or enthalpy, the calculator computes the unknown. This tool is useful for chemistry and thermodynamics students, laboratory experiments, and understanding energy changes in chemical reactions and processes.