Convert Picojoules to Therms
Convert Picojoules (pJ) to Therms (thm) instantly and accurately.
Conversion Formula
thm = pJ × 9.478171203e-21
About Picojoules
A picojoule (pJ) is 10⁻¹² J - the scale of laser pulses in scientific instruments and chip-level capacitor storage. A 1 pF capacitor charged to 1 V stores exactly 0.5 pJ. Laser pulse energies in OCT and ultrafast spectroscopy are typically 1-1,000 pJ. Single-photon SNSPD detector dead-time dissipates 1-100 pJ per event. Phase-change memory cells (PCM, ReRAM) switch at 10-100 pJ per state transition, setting a lower bound on non-volatile memory energy efficiency. 1 pJ = 10⁻¹² J = 6.242 MeV.
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
| Picojoules (pJ) | Therms (thm) |
|---|---|
| 1 pJ | 9.478 × 10-21 thm |
| 2 pJ | 1.896 × 10-20 thm |
| 5 pJ | 4.739 × 10-20 thm |
| 10 pJ | 9.478 × 10-20 thm |
| 25 pJ | 2.37 × 10-19 thm |
| 50 pJ | 4.739 × 10-19 thm |
| 100 pJ | 9.478 × 10-19 thm |