At One Place

Joules to British thermal units

1 joule in British thermal units
1 J = 0.0009478 BTU
BTU = J × 0.00094781712

To convert joules to British thermal units, multiply by 0.00094781712. The table below gives the values people look up most often, and the converter works for any number.

Joules to British thermal units table

Common joule values converted to British thermal units.
Joules British thermal units
1 J 0.0009478
2 J 0.0018956
3 J 0.0028435
4 J 0.0037913
5 J 0.0047391
10 J 0.0094782
15 J 0.014217
20 J 0.018956
25 J 0.023695
30 J 0.028435
40 J 0.037913
50 J 0.047391
75 J 0.071086
100 J 0.094782
250 J 0.23695
500 J 0.47391
1,000 J 0.94782

How the conversion works

The relationship is BTU = J × 0.00094781712. Both units measure energy, so the conversion is a fixed factor that never changes.

Common questions

How many British thermal units are in one joule?
One joule equals 0.0009478 British thermal units. BTU = J × 0.00094781712.
How do you convert joules to British thermal units?
Use BTU = J × 0.00094781712. So 10 J is 0.0094782 BTU.
How many joules are in one British thermal unit?
One British thermal unit equals 1,055.0559 joules, which is the reverse of the conversion above.

Related pages

Sources

  1. Guide for the Use of the International System of Units (SP 811) — NIST (Public domain (US Government))
  2. The International System of Units (SI Brochure) — Bureau International des Poids et Mesures
  3. Calculated on this page — At One Place

How these figures are compiled and checked