⚡ Energy converter

BTU to Joule Converter

Convert BTU (BTU) to joules (J) instantly with the exact formula, a conversion table and chart.

BTU

Results

Joules
1,055.05585262 J
Same value in every unit

📊 BTU to Joule chart

BTU to Joule — plotted against btu (btu).

How to convert BTU to joules

To convert BTU to joules, multiply by 1,055.05585262. Energy conversions connect nutrition, electricity bills, heating systems and physics.

J = BTU × 1,055.05585262 BTU = J ÷ 1,055.05585262
BTU to Joule conversion – BTU to J formula illustration
BTU (BTU) → Joule (J) at a glance.

BTU to Joule conversion table

BTU (BTU)Joule (J)
0.1 BTU105.505585262 J
0.5 BTU527.52792631 J
1 BTU1,055.05585262 J
2 BTU2,110.11170524 J
3 BTU3,165.16755786 J
4 BTU4,220.22341048 J
5 BTU5,275.2792631 J
10 BTU10,550.5585262 J
20 BTU21,101.1170524 J
25 BTU26,376.3963155 J
50 BTU52,752.792631 J
100 BTU105,505.585262 J
500 BTU527,527.92631 J
1,000 BTU1,055,055.85262 J

About the units

BTU (BTU)

The International Table British thermal unit is about 1,055.06 joules, used for HVAC and heating.

Joule (J)

The joule is the SI unit of energy, the work done by one newton over one meter.

How to use this converter

  1. Type the number of BTU (BTU) in the input box.
  2. The result in joules appears instantly — no button needed.
  3. See the same value in every other energy unit just below.
  4. Use “Swap units” to convert joules back to BTU.

Tips for better results

  • Double-check which system a unit belongs to (for example US vs UK gallons).
  • Use the swap button to convert in the opposite direction instantly.
  • Bookmark the conversions you use most — each pair has its own page.

Frequently asked questions

How many joules are in one btu?

One btu equals 1,055.05585262 joules. 1,055.05585262 is the exact factor used by this converter.

How do I convert BTU to joules?

Multiply the value in BTU by 1,055.05585262. To go the other way, multiply joules by 0.000947817120313.

What is 10 BTU in J?

10 BTU = 10,550.5585262 J. Also, 5 BTU = 5,275.2792631 J and 100 BTU = 105,505.585262 J.

What is the difference between a btu and a joule?

The International Table British thermal unit is about 1,055.06 joules, used for HVAC and heating. The joule is the SI unit of energy, the work done by one newton over one meter.

Is this tool free and private?

Yes — the BTU to Joule is completely free with no sign-up, and it runs entirely in your browser, so the values you enter are never uploaded to our servers.

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