Convert energy units — joules, kilowatt-hours, calories, BTU, electron volts and more.
| Unit | Name | Value |
|---|---|---|
| 0.001 erg | 9.480e-19 therm | |
| 0.01 erg | 9.480e-18 therm | |
| 0.1 erg | 9.480e-17 therm | |
| 1 erg | 9.480e-16 therm | |
| 5 erg | 4.740e-15 therm | |
| 10 erg | 9.480e-15 therm | |
| 50 erg | 4.740e-14 therm | |
| 100 erg | 9.480e-14 therm | |
| 1000 erg | 9.480e-13 therm |
Formula: Therm = Erg × 9.4804e-16
Multiply any erg value by 9.4804e-16 to get therm.
Reverse: Erg = Therm × 1.0548e15
Common erg values — factor: 1 erg = 9.4804e-16 therm
| Erg (erg) | Therm (therm) | Context |
|---|---|---|
| 1 erg | 9.480e-16 therm | 1 erg |
| 100 erg | 9.480e-14 therm | 100 erg |
| 1e+04 erg | 9.480e-12 therm | 1 mJ |
| 1e+06 erg | 9.480e-10 therm | 100 mJ |
| 1e+07 erg | 9.480e-09 therm | 1 J |
| 1e+08 erg | 9.480e-08 therm | 10 J |
| 1.000e+10 erg | 9.480e-06 therm | 1 kJ |
| 1.000e+12 erg | 0.000948 therm | 100 kJ |
| 1.000e+14 erg | 0.0948 therm | 10 MJ |
| 1.000e+17 erg | 94.8 therm | 1 GJ |
| 1.000e+20 erg | 9.48e+04 therm | 100 GJ |
| 1.000e+23 erg | 9.48e+07 therm | 10 TJ |
| 1.000e+26 erg | 9.480e+10 therm | 1 PJ |
| 1.000e+30 erg | 9.480e+14 therm | 1 EJ |
| 1.000e+33 erg | 9.480e+17 therm | 1 ZJ |
1 erg = 9.4804e-16 therm. Memorize for instant estimates.
Use 9.4804e-16 as a quick mental multiplier.
Multiply result by 1.0548e15 to recover the original erg 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 erg is the unit of energy in the CGS (centimeter-gram-second) system, equal to exactly 10⁻⁷ joules. It was defined by the British Association for the Advancement of Science in 1882 as the work done by a force of one dyne over one centimeter.
Ergs were widely used in 19th and early 20th century physics before SI standardization. They remain in use in astrophysics (stellar luminosities in erg/s) and some older scientific literature.
Interesting fact: The Sun radiates about 3.8 × 10³³ ergs per second. A mosquito in flight exerts about 100 ergs of energy per wingbeat. One joule = 10,000,000 ergs exactly.
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.
Converting erg to therm 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 erg = 4.7402e-15 therm and 10 erg = 9.4804e-15 therm. Reverse: 1 therm = 1.0548e15 erg. Exact factor: 1 erg = 9.4804e-16 therm.
All conversions use IEEE 754 double-precision arithmetic, accurate to at least 8 significant figures.