Convert Attojoules to Microjoules
Convert Attojoules (aJ) to Microjoules (µJ) instantly and accurately.
Conversion Formula
µJ = aJ × 1.000000000e-12
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 Microjoules
A microjoule (µJ) is 10⁻⁶ J - the scale of precision laser ablation, ESD damage events, and individual LIDAR pulses. LASIK eye surgery delivers 0.5-2 µJ per pulse at 193 nm, ablating ~0.25 µm of corneal tissue per pulse. ESD events that destroy IC gates correspond to 1-1,000 µJ; the Human Body Model test discharges ~500 µJ at 2 kV. Q-switched microchip laser pulses for rangefinding are 1-100 µJ. The kinetic energy of a 1 mg grain of sand falling 10 cm is mgh ≈ 0.98 µJ. 1 µJ = 10⁻⁶ J.
Quick Reference Table
| Attojoules (aJ) | Microjoules (µJ) |
|---|---|
| 1 aJ | 1 × 10-12 µJ |
| 2 aJ | 2 × 10-12 µJ |
| 5 aJ | 5 × 10-12 µJ |
| 10 aJ | 1 × 10-11 µJ |
| 25 aJ | 2.5 × 10-11 µJ |
| 50 aJ | 5 × 10-11 µJ |
| 100 aJ | 1 × 10-10 µJ |