joules to Btu converter

1 joule equals 0.0009478171 BTUs. Conversions use Btu = J × 0.000948

J → 0.0009478171 Btu

Btu = J × 0.000948

Converter

Worked examples

1 J = 0.0009478171 Btu
2 J = 0.0018956342 Btu
5 J = 0.0047390856 Btu
10 J = 0.0094781712 Btu
100 J = 0.09478171 Btu

joules to BTUs conversion table

J	Btu	Arithmetic
1 J	0.0009478171 Btu	× 0.000948
2 J	0.0018956342 Btu	× 0.000948
3 J	0.0028434514 Btu	× 0.000948
4 J	0.0037912685 Btu	× 0.000948
5 J	0.0047390856 Btu	× 0.000948
6 J	0.0056869027 Btu	× 0.000948
8 J	0.007582537 Btu	× 0.000948
10 J	0.0094781712 Btu	× 0.000948
12 J	0.01137381 Btu	× 0.000948
15 J	0.01421726 Btu	× 0.000948
20 J	0.01895634 Btu	× 0.000948
25 J	0.02369543 Btu	× 0.000948
30 J	0.02843451 Btu	× 0.000948
40 J	0.03791268 Btu	× 0.000948
50 J	0.04739086 Btu	× 0.000948
60 J	0.05686903 Btu	× 0.000948
70 J	0.0663472 Btu	× 0.000948
80 J	0.07582537 Btu	× 0.000948
90 J	0.08530354 Btu	× 0.000948
100 J	0.09478171 Btu	× 0.000948

How to convert J to Btu

Take your value in joules.
Multiply by 0.000948
That is your answer in BTUs — no rounding needed until you choose a display precision.

Related conversions

Btu to J J to kJ J to cal J to kcal J to Wh J to kWh kJ to Btu cal to Btu kcal to Btu all energy units

Questions

How many BTUs in 1 joule?

Exactly 0.0009478171 Btu. The factor follows from the definitions of both units, not from a measurement, so it is exact.

How do I convert J to Btu?

Multiply the joules figure by 0.000948 — or use the converter above, which updates as you type.

Is J to Btu the same as Btu to J?

No — they are inverses. One J is 0.0009478171 Btu, while one Btu is 1,055.06 J.

What is 1 J in Btu?

1 J = 0.0009478171 Btu (see the value page for the full arithmetic).