Convert energy units — joules, kilowatt-hours, calories, BTU, electron volts and more.
| Unit | Name | Value |
|---|---|---|
| 0.001 therm | 105.48 kJ | |
| 0.01 therm | 1054.8 kJ | |
| 0.1 therm | 10548 kJ | |
| 1 therm | 105480 kJ | |
| 5 therm | 527402 kJ | |
| 10 therm | 1.0548e+06 kJ | |
| 50 therm | 5.27402e+06 kJ | |
| 100 therm | 1.0548e+07 kJ | |
| 1000 therm | 1.0548e+08 kJ |
Formula: Kilojoule = Therm × 105,500
Multiply any therm value by 105,500 to get kilojoule.
Reverse: Therm = Kilojoule × 9.4804e-6
Common therm values — factor: 1 therm = 105,500 kJ
| Therm (therm) | Kilojoule (kJ) | Context |
|---|---|---|
| 0.001 therm | 105.5 kJ | 0.1 kWh |
| 0.01 therm | 1,055 kJ | 1 kWh |
| 0.1 therm | 1.055e+04 kJ | 3 kWh |
| 1 therm | 1.055e+05 kJ | 29.3 kWh |
| 10 therm | 1.055e+06 kJ | Monthly gas fraction |
| 50 therm | 5.274e+06 kJ | Half winter month |
| 100 therm | 1.055e+07 kJ | Monthly winter gas |
| 500 therm | 5.274e+07 kJ | Seasonal heating |
| 1,000 therm | 1.055e+08 kJ | Annual home gas |
| 1e+04 therm | 1.055e+09 kJ | Commercial building |
| 1e+05 therm | 1.055e+10 kJ | Large industrial |
| 1e+06 therm | 1.055e+11 kJ | Utility scale |
| 1.000e+09 therm | 1.055e+14 kJ | Regional supply |
| 1.000e+12 therm | 1.055e+17 kJ | National supply |
| 1.000e+15 therm | 1.055e+20 kJ | Global scale |
1 therm = 105,500 kJ. Memorize for instant estimates.
Use 105,500 as a quick mental multiplier.
Multiply result by 9.4804e-6 to recover the original therm value.
Bills residential and commercial customers in therms per billing cycle.
Calculates annual gas consumption for boilers and furnaces in therms.
Trades natural gas contracts denominated in therms or MMBTU.
Monitors and benchmarks gas use in therms per square foot per year.
Sizes gas pipes and appliances based on BTU/hour and therm ratings.
Models household and industrial gas demand in therms per year.
The therm is a unit of natural gas energy equal to 100,000 BTU (105,480,400 joules). It is the standard billing unit for natural gas in the United States and United Kingdom. The name comes from the Greek thermos (heat).
Gas utilities bill residential and commercial customers in therms in the US and UK. A typical US household uses about 50–100 therms per month in winter. Natural gas furnaces and water heaters are rated in therms per hour.
Interesting fact: One therm of natural gas costs about $1.00–$2.00 in the US. Burning one therm releases about 5.3 kg of CO₂. The US consumes about 28 trillion therms of natural gas equivalent energy per year.
The kilojoule (kJ) equals 1,000 joules and is the practical energy unit for food, chemistry, and heating applications in metric countries. Food energy labels in Australia, Europe, and most of the world use kilojoules.
A dietary calorie (kcal) equals 4.184 kJ. A can of soda contains about 600 kJ. The specific heat of water (4.184 kJ/kg·°C) means heating 1 liter of water by 1°C requires 4.184 kJ.
Interesting fact: An average adult needs about 8,000-10,000 kJ (2,000-2,400 kcal) per day. Running a marathon burns approximately 12,500 kJ.
Converting therm to kilojoule is common across energy, nutrition, engineering, and science. Different sectors use different energy units — joules in physics, kcal in nutrition, kWh in electricity, and BTU in HVAC — making accurate conversion essential for cross-disciplinary work and international comparisons.
Quick reference: 5 therm = 527,400 kJ and 10 therm = 1.055e+06 kJ. Reverse: 1 kJ = 9.4804e-6 therm. Exact factor: 1 therm = 105,500 kJ.
All conversions use IEEE 754 double-precision arithmetic, accurate to at least 8 significant figures.