This free online Potential Energy Calculator makes it easy to calculate gravitational potential energy using the formula PE = m × g × h. Simply enter the mass, height, and gravitational acceleration (default is 9.80665 m/s² for Earth), then choose your preferred units such as kilograms, grams, pounds, meters, centimeters, or feet. The calculator instantly provides results in Joules (J) and kilojoules (kJ). This tool is mobile-friendly, WordPress-safe, and perfect for students, teachers, engineers, and physics enthusiasts who need quick and accurate energy calculations for study, research, or practical application.