Convert Kilojoules to Therms
Convert Kilojoules (kJ) to Therms (thm) instantly and accurately.
Conversion Formula
thm = kJ × 9.478171203e-6
About Kilojoules
A kilojoule (kJ) is exactly 1,000 J and is the standard energy unit for food and physical chemistry. EU, Australian, and NZ food labels are mandatory in kJ: recommended adult intake is ~8,400 kJ/day. Bond dissociation energies: C-H bond 413 kJ/mol; C=C double bond 614 kJ/mol; N≡N triple bond 945 kJ/mol. Specific heat of water: 4.184 kJ/(kg·K). A cyclist riding at 150 W for one hour expends 540 kJ. Charpy and Izod impact toughness tests record results in J and kJ. 1 kJ = 1,000 J = 239.0 cal = 0.94782 BTU = 0.27778 Wh.
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
| Kilojoules (kJ) | Therms (thm) |
|---|---|
| 1 kJ | 9.478 × 10-6 thm |
| 2 kJ | 1.896 × 10-5 thm |
| 5 kJ | 4.739 × 10-5 thm |
| 10 kJ | 9.478 × 10-5 thm |
| 25 kJ | 0.000236954 thm |
| 50 kJ | 0.000473909 thm |
| 100 kJ | 0.000947817 thm |