Convert Attojoules to Terajoules
Convert Attojoules (aJ) to Terajoules (TJ) instantly and accurately.
Conversion Formula
TJ = aJ × 1.000000000e-30
About Attojoules
An attojoule (aJ) is 10⁻¹⁸ J - the scale of individual X-ray photons and superconducting qubit circuits. A 1 keV X-ray photon carries 160 aJ; a visible green photon (~550 nm) carries ~0.36 aJ. Josephson junction energies in superconducting qubits are set in tens to hundreds of aJ to achieve quantum coherence at millikelvin temperatures. XRISM's cryogenic TES X-ray spectrometer resolves individual photon energies at the hundreds-of-aJ level with ~7 eV FWHM resolution. 1 aJ = 10⁻¹⁸ J = 6.242 eV.
About Terajoules
A terajoule (TJ) is 10¹² J - the scale of nuclear yields in the kiloton range and large industrial accidents. One kiloton of TNT = 4.184 TJ; the Hiroshima bomb (15 kt) released ~62.8 TJ. The Halifax Explosion (1917) released ~3 TJ. A 500 MW coal plant consumes ~51.4 TJ/h of thermal input. Daily primary energy of Denmark is ~250-300 TJ; the UK ~3,800 TJ/day. A 1 GW nuclear reactor at 90% capacity factor generates ~77.7 TJ/day. 1 TJ = 10¹² J = 277,778 kWh = 277.78 MWh = 23.88 ktoe.
Quick Reference Table
| Attojoules (aJ) | Terajoules (TJ) |
|---|---|
| 1 aJ | 1 × 10-30 TJ |
| 2 aJ | 2 × 10-30 TJ |
| 5 aJ | 5 × 10-30 TJ |
| 10 aJ | 1 × 10-29 TJ |
| 25 aJ | 2.5 × 10-29 TJ |
| 50 aJ | 5 × 10-29 TJ |
| 100 aJ | 1 × 10-28 TJ |