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Power and Energy

WtoBTU/s

Convert watts (W) to British thermal units per second (BTU/s).

Factor1 W = 0.0009478171 BTU/s

Converter

W

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

Result
0.947817BTU/s

Rendered to 6 significant figures.

Formula

Formula
BTU/s = W × 0.0009478171

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

Worked example

Convert 1000 W to BTU/s.

  1. 01Start with 1000 W.
  2. 02Multiply by the conversion factor: 1000 × 0.0009478171 = 0.947817 BTU/s.
Result1000 W = 0.947817 BTU/s

Conversion table

WBTU/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 W to BTU/s?
1 W equals 0.0009478171 BTU/s. To convert, multiply the value in watts by 0.0009478171.
How do I convert 1 W to BTU/s?
1 W = 0.000947817 BTU/s. For any value, multiply by 0.0009478171.
How do I convert BTU/s back to W?
Divide by the same factor — or equivalently, multiply by 1055.056. So 1 BTU/s = 1055.06 W.
When would I need to convert watt 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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