Convert Microjoules to Tons of TNT
Convert Microjoules (µJ) to Tons of TNT (t(TNT)) instantly and accurately.
Conversion Formula
t(TNT) = µJ × 2.390057361e-16
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.
About Tons of TNT
A ton of TNT is an energy unit defined as exactly 10⁹ thermochemical calories = 4.184 GJ. The Trinity test (first nuclear weapon, 1945) yielded ~21 kilotons TNT = 87.9 TJ. The Tsar Bomba yielded ~50 megatons TNT = 209 PJ - the largest human-made explosion in history. Hiroshima's Little Boy yielded ~15 kilotons = 62.8 TJ. The Tunguska 1908 airburst released ~10-15 megatons TNT. Earthquake magnitude 6.0 releases ~63 kilotons TNT equivalent in seismic energy. 1 t(TNT) = 4.184 GJ = 4,184 MJ = 1,162.8 kWh.
Quick Reference Table
| Microjoules (µJ) | Tons of TNT (t(TNT)) |
|---|---|
| 1 µJ | 2.39 × 10-16 t(TNT) |
| 2 µJ | 4.78 × 10-16 t(TNT) |
| 5 µJ | 1.195 × 10-15 t(TNT) |
| 10 µJ | 2.39 × 10-15 t(TNT) |
| 25 µJ | 5.975 × 10-15 t(TNT) |
| 50 µJ | 1.195 × 10-14 t(TNT) |
| 100 µJ | 2.39 × 10-14 t(TNT) |