Convert Microjoules to Therms
Convert Microjoules (µJ) to Therms (thm) instantly and accurately.
Conversion Formula
thm = µJ × 9.478171203e-15
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 Therms
A therm is the US natural gas billing unit equal to exactly 100,000 BTU = 105,505,585.262 J ≈ 105.5 MJ. One CCF of average US pipeline gas contains ~1.02 therms. The EIA publishes residential gas prices in $/therm; spot prices at Henry Hub are in $/MMBTU (1 MMBTU = 10 therms). US households average 500-700 therms/year for space heating, water heating, and cooking. A 15 kW domestic boiler running 2 hours delivers ~1 therm of useful heat. 1 therm = 100,000 BTU = 105.506 MJ = 29.307 kWh = 25,200 kcal.
Quick Reference Table
| Microjoules (µJ) | Therms (thm) |
|---|---|
| 1 µJ | 9.478 × 10-15 thm |
| 2 µJ | 1.896 × 10-14 thm |
| 5 µJ | 4.739 × 10-14 thm |
| 10 µJ | 9.478 × 10-14 thm |
| 25 µJ | 2.37 × 10-13 thm |
| 50 µJ | 4.739 × 10-13 thm |
| 100 µJ | 9.478 × 10-13 thm |