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Power and Energy

J/stoBTU/s

Convert joules per second (J/s) to British thermal units per second (BTU/s).

Factor1 J/s = 0.0009478171 BTU/s

Converter

J/s

Accepts numbers or expressions, e.g. 150 + 14.7

Result
9.47817BTU/s

Rendered to 6 significant figures.

Formula

Formula
BTU/s = J/s × 0.0009478171

Multiply any value in joules per second by 0.0009478171 to obtain the value in British thermal units per second.

Worked example

Convert 10000 J/s to BTU/s.

  1. 01Start with 10000 J/s.
  2. 02Multiply by the conversion factor: 10000 × 0.0009478171 = 9.47817 BTU/s.
Result10000 J/s = 9.47817 BTU/s

Conversion table

J/sBTU/s
10.00094782
20.0018956
50.0047391
100.0094782
200.018956
500.047391
1000.094782
2000.18956
5000.47391
10000.94782

Reference values rounded to 5 significant figures for display.

FAQ

What is the conversion factor from J/s to BTU/s?
1 J/s equals 0.0009478171 BTU/s. To convert, multiply the value in joules per second by 0.0009478171.
How do I convert 1 J/s to BTU/s?
1 J/s = 0.000947817 BTU/s. For any value, multiply by 0.0009478171.
How do I convert BTU/s back to J/s?
Divide by the same factor — or equivalently, multiply by 1055.056. So 1 BTU/s = 1055.06 J/s.
When would I need to convert joule per second to British thermal unit per second?
Power conversions are common when comparing motor ratings (often kW or hp), thermal duty (BTU/hr or kW), and utility consumption in mixed-unit projects.
Is the conversion exact?
The factor shown is precise to at least 7 significant figures. For most process-engineering work this is far better than instrument accuracy. For metrology or trade applications, refer to the relevant national standard (NIST, BIPM, ISO 80000).

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