This free online Kinetic Energy Calculator makes it simple to calculate kinetic energy using the formula KE = ½ × m × v². Just enter the mass and velocity, select units such as kilograms, grams, pounds, meters per second, kilometers per hour, or feet per second, and get instant results in Joules (J) and kilojoules (kJ). It is a mobile-friendly and WordPress-safe tool, perfect for students, teachers, engineers, and physics enthusiasts who need quick and accurate energy calculations for study, research, or practical applications.