Convert Attojoules to Nanojoules
Convert Attojoules (aJ) to Nanojoules (nJ) instantly and accurately.
Conversion Formula
nJ = aJ × 1.000000000e-9
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 Nanojoules
A nanojoule (nJ) is 10⁻⁹ J - the scale of ultrashort laser pulses, flash memory write operations, and cellular ATP reserves. A Ti:sapphire laser oscillator produces pulses of 1-20 nJ at 80 MHz. Flash NAND programming costs ~1-10 nJ/bit written; a read is ~0.1 nJ/bit. The total ATP energy stored in a single red blood cell is ~1-5 nJ. The kinetic energy of a 1 µg particle at 1.4 m/s is ~1 nJ, illustrating that nanojoules describe real nanoscale mechanical events. 1 nJ = 10⁻⁹ J.
Quick Reference Table
| Attojoules (aJ) | Nanojoules (nJ) |
|---|---|
| 1 aJ | 1 × 10-9 nJ |
| 2 aJ | 2 × 10-9 nJ |
| 5 aJ | 5 × 10-9 nJ |
| 10 aJ | 1 × 10-8 nJ |
| 25 aJ | 2.5 × 10-8 nJ |
| 50 aJ | 5 × 10-8 nJ |
| 100 aJ | 1 × 10-7 nJ |