Convert Kilojoules to Picojoules
Convert Kilojoules (kJ) to Picojoules (pJ) instantly and accurately.
Conversion Formula
pJ = kJ × 1000000000000000
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 Picojoules
A picojoule (pJ) is 10⁻¹² J - the scale of laser pulses in scientific instruments and chip-level capacitor storage. A 1 pF capacitor charged to 1 V stores exactly 0.5 pJ. Laser pulse energies in OCT and ultrafast spectroscopy are typically 1-1,000 pJ. Single-photon SNSPD detector dead-time dissipates 1-100 pJ per event. Phase-change memory cells (PCM, ReRAM) switch at 10-100 pJ per state transition, setting a lower bound on non-volatile memory energy efficiency. 1 pJ = 10⁻¹² J = 6.242 MeV.
Quick Reference Table
| Kilojoules (kJ) | Picojoules (pJ) |
|---|---|
| 1 kJ | 1 × 1015 pJ |
| 2 kJ | 2 × 1015 pJ |
| 5 kJ | 5 × 1015 pJ |
| 10 kJ | 1 × 1016 pJ |
| 25 kJ | 2.5 × 1016 pJ |
| 50 kJ | 5 × 1016 pJ |
| 100 kJ | 1 × 1017 pJ |