⚡ Energy

BTU to joules Converter

Convert BTU to joules instantly: 1 BTU = 1055.06 joules. Free converter with the formula, a reference table and FAQs — no sign-up.

Quick answer: To convert BTU to joules, multiply by 1055.06. For example, 1 BTU = 1055.06 joules. Use the calculator below for any value.
BTU to joules
→
Common conversions
BTU joules
Formula:

How to convert BTU to joules

1

Enter your value

Type the number of btu you want to convert into the left box. The result in joules appears instantly in the right box. You can also type into the right box to convert in the other direction.

2

Use the swap button

Click the ⇄ Swap button to reverse the conversion — joules to BTU. Your current value carries across so you don't have to re-enter anything.

3

About BTU and joules

BTU and joules are common energy measurements.

Worked examples: BTU to joules

Multiply the BTU value by 1,055.06 to get joules. A few quick examples:

  • 5 BTU × 1,055.06 = 5,275.3 joules
  • 25 BTU × 1,055.06 = 26,376.5 joules
  • 250 BTU × 1,055.06 = 263,765 joules
📊 Common conversions at a glance
BTU joules
0.001 1.055
0.01 10.55
0.1 105.5
0.5 527.5
1 1055
5 5275
Reviewed for 2026. BTU ↔ joules conversion factor verified against published reference data. Built by a UK-based qualified primary teacher and FA Level 2 coach as part of 247QuickTools' free utility-tools project.

Frequently asked questions

How do I convert BTU to joules?

To convert BTU to joules, multiply by 1055.06. Or use the calculator above for instant results.

How many joules are in 1 BTU?

1 BTU equals 1055.06 joules.

Is the BTU to joules converter free?

Yes, the BTU to joules converter is completely free with no sign-up required, no downloads, and it works offline once the page has loaded.