Convert Kilojoules to Exajoules

Convert Kilojoules (kJ) to Exajoules (EJ) instantly and accurately.

Kilojoules (kJ)
Exajoules (EJ)

Conversion Formula

EJ = kJ × 1.000000000e-15

About Kilojoules

A kilojoule (kJ) is exactly 1,000 J and is the standard energy unit for food and physical chemistry. EU, Australian, and NZ food labels are mandatory in kJ: recommended adult intake is ~8,400 kJ/day. Bond dissociation energies: C-H bond 413 kJ/mol; C=C double bond 614 kJ/mol; N≡N triple bond 945 kJ/mol. Specific heat of water: 4.184 kJ/(kg·K). A cyclist riding at 150 W for one hour expends 540 kJ. Charpy and Izod impact toughness tests record results in J and kJ. 1 kJ = 1,000 J = 239.0 cal = 0.94782 BTU = 0.27778 Wh.

About Exajoules

An exajoule (EJ) is 10¹⁸ J - the scale of global energy consumption. World primary energy supply in 2022 was ~580-610 EJ: coal ~160 EJ; oil ~190 EJ; gas ~145 EJ; nuclear ~26 EJ; wind ~8 EJ; solar PV ~8 EJ. Global electricity generation of ~29,000 TWh = 104 EJ. Solar energy incident on Earth's atmosphere is ~5.5 × 10⁶ EJ/year - approximately 9,000× total human demand. Annual fossil fuel combustion releases ~490 EJ/year, producing ~36.8 Gt CO₂. 1 EJ = 10¹⁸ J = 277.78 TWh = 238.85 Mtoe.

Quick Reference Table

Kilojoules (kJ)Exajoules (EJ)
1 kJ1 × 10-15 EJ
2 kJ2 × 10-15 EJ
5 kJ5 × 10-15 EJ
10 kJ1 × 10-14 EJ
25 kJ2.5 × 10-14 EJ
50 kJ5 × 10-14 EJ
100 kJ1 × 10-13 EJ

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