Convert megajoules to therms

1 MJ=0.009478thm

Use the converter below to change any megajoules value into therms instantly — with formula, conversion table, and real-world examples.

You have

Equals

0.0094782

Conversion formula

Forward

therms = megajoules × 0.009478

Reverse

megajoules = therms × 105.506

Example: 10 MJ × 0.009478 = 0.09478 thm.

About both units

From

Megajoule

The megajoule equals 1,000,000 joules. Used for fuel energy content, large-scale mechanical work and in some European natural-gas billing. A litre of petrol contains about 34 MJ of energy.

Real-world: 1 L petrol: ~34 MJ. 1 L diesel: ~38 MJ. Tesla Model 3 full charge: ~270 MJ.

Read full megajoule reference →

Therm

thm

The therm equals 100,000 BTU or 105.5 megajoules. Used in US and UK natural-gas billing. A typical UK home uses 200–500 therms per year for heating.

Real-world: UK home heating: 200–500 therms/year. 1 therm = about $1.50 US (2024) or £1.00 UK.

Read full therm reference →

Megajoule to Therm conversion table

Common megajoules to therms values for quick reference.

Megajoule (MJ)	Therm (thm)
1 MJ	0.009478 thm
10 MJ	0.09478 thm
100 MJ	0.9478 thm
500 MJ	4.73909 thm
1,000 MJ	9.47817 thm
5,000 MJ	47.3909 thm
10,000 MJ	94.7817 thm
50,000 MJ	473.909 thm
100,000 MJ	947.817 thm
500,000 MJ	4,739.09 thm

Tips & common mistakes

Quick tips

1 MJ = 1000 kJ = 0.278 kWh.
Natural gas heat content often quoted as MJ/m³.
For fuel economy, use MJ/km or L/100km interchangeably.

Avoid these

Confusing MJ with MW (power).
Using MJ for electricity bills — kWh is standard.
Mixing fuel energy (MJ) with fuel volume (L) without unit conversion.

Frequently asked questions

How many therms in a megajoule?

One megajoule equals 0.009478 therms.

How do I convert megajoules to therms?

Multiply the megajoule value by 0.009478 to get the equivalent in therms.

What is 100 megajoules in therms?

100 megajoules equals 0.9478 therms.

Is a megajoule bigger than a therm?

No. 1 megajoule equals 0.009478 therms, so one megajoule is smaller.

How to convert megajoules to therms without a calculator?

Multiply by 0.01 for a quick estimate; use a calculator for precise results.

Related energy conversions

📊 See full comparison matrix →

Conversions in other categories

WeightKilogram → Pound LengthKilometer → Mile TemperatureCelsius → Fahrenheit VolumeLiter → US Gallon AreaSquare Meter → Square Foot SpeedKilometer per Hour → Mile per Hour PressureBar → Pound per Square Inch PowerKilowatt → Mechanical Horsepower