A unit of energy where 1 megajoule equals 1,000,000 joules. Used for food energy (in some countries labeled in kJ/MJ), explosive equivalents (e.g., TNT), and industrial calorific values (e.g., natural gas ≈ 36 MJ/m³). Widely adopted in China’s scientific research, energy sector, and safety engineering, and convertible to kWh (1 kWh ≈ 3.6 MJ).

A unit of energy where 1 megajoule equals 1,000,000 joules. Used for food energy (in some countries labeled in kJ/MJ), explosive equivalents (e.g., TNT), and industrial calorific values (e.g., natural gas ≈ 36 MJ/m³). Widely adopted in China’s scientific research, energy sector, and safety engineering, and convertible to kWh (1 kWh ≈ 3.6 MJ).