joules to BTU
Convert joule to btu — instant, free, with the formula shown.
1 J=0.000948 BTU
How to convert joule to btu
To convert joule to btu, multiply by 0.00094782:
BTU = J × 0.00094782
For example, 10 J × 0.000948 = 0.009478 BTU.
J to BTU conversion table
| joules (J) | BTU (BTU) |
|---|---|
| 1 J | 0.000948 BTU |
| 2 J | 0.001896 BTU |
| 5 J | 0.004739 BTU |
| 10 J | 0.009478 BTU |
| 25 J | 0.023695 BTU |
| 50 J | 0.047391 BTU |
| 100 J | 0.094782 BTU |
| 250 J | 0.236954 BTU |
| 500 J | 0.473909 BTU |
| 1000 J | 0.947817 BTU |
Other joule conversions
Convert to btu from another unit
J to BTU — frequently asked
How many BTU are in 1 joule?
1 joule = 0.000948 BTU (J × 0.000948 = BTU).
What is the formula to convert joule to btu?
Multiply your joule value by 0.00094782 to get btu.
How do I convert 10 joules to BTU?
10 J = 0.009478 BTU. For 100 J the answer is 0.094782 BTU. Use the calculator on this page for any other value.
When to convert joule to btu
1Electricity bills (kWh)
2Nutrition labels (kcal / food cal)
3HVAC and heating (BTU, therms)
4Physics and chemistry (J, eV)
Energy conversion — common questions
Is a food calorie the same as a calorie?
No — a food 'Calorie' (capital C) actually means 1 kilocalorie = 1,000 small calories = 4,184 J. Nutrition labels typically write 'cal' meaning kcal.
How many joules in 1 kWh?
1 kWh = 3,600,000 J (3.6 MJ). Because 1 kW × 1 hour = 1,000 W × 3,600 s = 3,600,000 J.
What is a BTU?
British Thermal Unit — the energy required to raise 1 pound of water by 1 °F. 1 BTU ≈ 1,055 J.
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