Convert kilojoules to therms

1 kJ=9.4782e-6thm

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

You have

Equals

9.4782e-6

Conversion formula

Forward

therms = kilojoules × 9.4782e-6

Reverse

kilojoules = therms × 105,505.59

Example: 10 kJ × 9.4782e-6 = 9.4782e-5 thm.

About both units

From

Kilojoule

The kilojoule equals 1000 joules. Used on European nutrition labels (required by EU law alongside kcal), for mechanical work specifications, and some engineering contexts. A 100 g chocolate bar contains about 2100 kJ.

Real-world: 100 g chocolate: ~2100 kJ. EU daily intake (adult): ~8400 kJ. Tesla Model 3 battery: ~270 MJ = 270,000 kJ.

Read full kilojoule 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 →

Kilojoule to Therm conversion table

Common kilojoules to therms values for quick reference.

Kilojoule (kJ)	Therm (thm)
1 kJ	9.4782e-6 thm
10 kJ	9.4782e-5 thm
100 kJ	0.0009478 thm
500 kJ	0.004739 thm
1,000 kJ	0.009478 thm
5,000 kJ	0.04739 thm
10,000 kJ	0.09478 thm
50,000 kJ	0.4739 thm
100,000 kJ	0.9478 thm
500,000 kJ	4.73909 thm

Tips & common mistakes

Quick tips

1 kJ = 1000 J = 0.239 kcal.
EU nutrition labels must show both kJ and kcal.
For quick conversion: kcal × 4.2 = kJ.

Avoid these

Assuming European labels use kcal only — they use both kJ and kcal.
Confusing kJ with kW (power).
Using kcal when kJ is requested in scientific context.

Frequently asked questions

How many therms in a kilojoule?

One kilojoule equals 9.4782e-6 therms.

How do I convert kilojoules to therms?

Multiply the kilojoule value by 9.4782e-6 to get the equivalent in therms.

What is 100 kilojoules in therms?

100 kilojoules equals 0.0009478 therms.

Is a kilojoule bigger than a therm?

No. 1 kilojoule equals 9.4782e-6 therms, so one kilojoule is smaller.

How to convert kilojoules to therms without a calculator?

Multiply by 0 for a quick estimate; use a calculator for precise results.

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