Joule to BTU Converter
Convert joules to btu with this free energy converter. The exact relationship used on this page is 1 joule = 0.000947817120313 btu. Type any number — the result updates instantly, works on phones and desktops, and is ready to copy into homework, a spec sheet, or a shopping list.
Formula: BTU = Joule × 0.000947817120313
How to convert joules to btu
- Enter the value in joules in the converter.
- Read the equivalent amount in btu.
- Use the swap link if you need btu to joule instead.
- Check the table for common values without typing.
Worked examples
- 1 J = 0.0009478171203 BTU
- 5 J = 0.004739085602 BTU
- 10 J = 0.009478171203 BTU
- 25 J = 0.02369542801 BTU
Conversion table
Common joules values converted to btu.
| J | BTU |
|---|---|
| 1 | 0.0009478171203 |
| 2 | 0.001895634241 |
| 3 | 0.002843451361 |
| 4 | 0.003791268481 |
| 5 | 0.004739085602 |
| 6 | 0.005686902722 |
| 7 | 0.006634719842 |
| 8 | 0.007582536963 |
| 9 | 0.008530354083 |
| 10 | 0.009478171203 |
| 20 | 0.01895634241 |
| 50 | 0.04739085602 |
| 100 | 0.09478171203 |
| 250 | 0.2369542801 |
| 500 | 0.4739085602 |
| 1,000 | 0.9478171203 |
About this conversion
Joule (J) and BTU (BTU) are both energy units. Energy converters connect food labels (kcal), electricity bills (kWh), physics (joules), and heating (BTU). Bookmark this URL when you convert joules to btu often, then explore related pairs in the same category if you need a different target unit.
Need the other direction? Open the btu to joule converter.
FAQ
How many btu are in 1 joule?+
1 joule equals 0.000947817120313 btu.
What is the formula to convert joules to btu?+
BTU = Joule × 0.000947817120313
How do I convert joules to btu by hand?+
Multiply the joule value by 0.000947817120313. Example: 10 joules × 0.000947817120313 = 0.00947817120313 btu.
Is this J to BTU converter accurate?+
Yes. Linear conversions use internationally agreed factors relative to SI. Temperature and inverse fuel units use the standard offset or reciprocal formulas, not a guessed scale factor.