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Energy

Browse Energy conversions

1 British thermal unit = 1055.055853 joule

Reviewed June 18, 2026 Linear conversions use exact SI and international definitions where available. No account, tracking login, or third-party scoring required.
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Formula Summary

Result: 1 British thermal unit = 1055.055853 joule

Formula: (1 x 1055.05585262) / 1

Rounding: Displayed to 6 decimal places by default, trimmed for readability. Use Detailed or Scientific for more precision.

Real World Context

1055.055853 joule is approximately:

  • about 0.293 watt-hours
How This Conversion Works

British thermal unit and joule are both used for energy conversions. This page converts 1 British thermal unit into 1055.055853 joule using the formula shown below.

Use this result for quick checks, comparisons, and everyday reference. For work that depends on exact precision, review the rounding setting and the assumption note before using the number.

The precision controls let you switch between a shorter result, the standard readable result, and scientific notation when the value is very large or very small.

Unit Notes
  • 1 British thermal unit (BTU) equals 1055.05585262 joule.
  • joule (J) is the base unit used for energy conversions.

Questions

How do you convert British thermal unit to joule?

This page converts British thermal unit to joule using this formula: (1 x 1055.05585262) / 1.

What is 1 British thermal unit in joule?

1 British thermal unit equals 1055.055853 joule.

How many decimals does this converter show?

Displayed to 6 decimal places by default, trimmed for readability. Use Detailed or Scientific for more precision. The precision buttons can also show a shorter result or scientific notation.

Equivalent Values
1055.05585262 joule
1.0550558526 kilojoule
252.1644007218 calorie
0.2521644007 kilocalorie
0.2930710702 watt-hour
0.0002930711 kilowatt-hour
1 British thermal unit
6.5851406782e21 electronvolt
0.00001 therm
Nearby Values
0.5 British thermal unit 527.52792631 joule
1 British thermal unit 1055.05585262 joule
2 British thermal unit 2110.11170524 joule
5 British thermal unit 5275.2792631 joule
10 British thermal unit 10550.5585262 joule
Full Details
Formula
(1 x 1055.05585262) / 1
Rounding
Displayed to 6 decimal places by default, trimmed for readability. Use Detailed or Scientific for more precision.
Assumption
Energy units use SI definitions. Calorie is the thermochemical calorie at 4.184 joules. BTU is the International Table BTU.

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