How to Convert Megajoules to Therms (MJ to thm)
Energy conversions link food labels in kJ and kcal, SP Group bills in kWh and air-conditioner capacity in BTU. This guide shows how to convert megajoules into therms by hand, with examples and a quick-reference table.
The conversion
To convert megajoules to therms, multiply the value by 0.0094781712. To go the other way, divide by the same number (or multiply by 105.505585257). For a quick estimate, multiply by about 0.0095.
Therms = megajoules × 0.0094781712
Worked examples
- 3 MJ = 0.028435 thm
- 12.5 MJ = 0.118477 thm
- 75 MJ = 0.710863 thm
Megajoules to Therms table
| Megajoules | Therms |
|---|---|
| 1 MJ | 0.009478 thm |
| 2 MJ | 0.018956 thm |
| 5 MJ | 0.047391 thm |
| 10 MJ | 0.094782 thm |
| 20 MJ | 0.189563 thm |
| 25 MJ | 0.236954 thm |
| 50 MJ | 0.473909 thm |
| 100 MJ | 0.947817 thm |
| 250 MJ | 2.3695 thm |
| 500 MJ | 4.7391 thm |
| 1,000 MJ | 9.4782 thm |
Common questions
Is MJ to thm exact?
The factors used here are the internationally defined values where they exist; results are rounded for display only.
How do I convert back?
Use the Therms to Megajoules converter.
Mistakes to avoid
Multiplying when you should divide
Converting to a smaller unit gives a bigger number, and converting to a larger unit gives a smaller one. If your answer moves the wrong way, you have inverted the factor.
Rounding the factor too early
Using 3 instead of 3.28 for feet per metre introduces an error of almost 9% before you have started.
Forgetting squared and cubed units
Area and volume factors are the length factor squared or cubed, so 1 m² is about 10.76 sq ft, not 3.28.
Background
Unit conversion is simply multiplication by a fixed ratio. The ratio between two units of the same quantity never changes, so once you know it you can convert any value in either direction.
For everyday use, three or four significant figures are usually enough. Engineering, science and trade documents may need more, and rounding should happen only at the end of a calculation.
Singapore adopted the metric system in the 1970s, replacing imperial units and traditional Chinese measures in most official uses. Metric units are now standard in schools, trade and government, but older units survive in property, markets and imported goods.
For any value, use the Megajoules to Therms Converter or browse all energy converters.
Run your own numbers: Megajoules to Therms Converter