Power Converter
Convert between power units
0.001
W
rate：1 mW = 0.001 W
Results in all units
1 mW| Unit | Symbol | Value |
|---|---|---|
| Metric | ||
| Watts | W | 0.001 |
| Milliwatts | mW | 1 |
| Kilowatts | kW | 0.000001 |
| Megawatts | MW | 1e-9 |
| Gigawatts | GW | 1e-12 |
| Joules/second | J/s | 0.001 |
| Metric horsepower | PS | 0.000001 |
| Imperial / US | ||
| Mechanical horsepower | hp | 0.000001 |
| BTU/hour | BTU/h | 0.003412 |
| BTU/second | BTU/s | 9.478171e-7 |
| Foot pounds/second | ft·lb/s | 0.000738 |
| Calories/second | cal/s | 0.000239 |
| Kilocalories/hour | kcal/h | 0.00086 |
| Tons of refrigeration | TR | 2.843451e-7 |
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51 Foot pounds/second
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0.0199 BTU/second
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67 Tons of refrigeration
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173,791.1352 Foot pounds/second
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90 Megawatts
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77,437,858.5086 Kilocalories/hour
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5 Mechanical horsepower
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891.1327 Calories/second
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37 BTU/second
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52.3496 Mechanical horsepower
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498 Mechanical horsepower
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504.9071 Metric horsepower
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87 Metric horsepower
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0.064 Megawatts
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87 Joules/second
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0.087 Kilowatts
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31 Calories/second
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0.1297 Kilowatts
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Common Scenarios
Power conversion is frequently used in automotive manufacturing, appliance purchases, and air conditioning. Car enthusiasts compare kilowatts (kW) and horsepower (hp). When choosing AC units, understanding "tons of refrigeration (TR)" is necessary.
History & Background
The concept of power originated in the Industrial Revolution. After James Watt improved the steam engine, he proposed "horsepower" to demonstrate its efficiency. Later, to honor him, physics named the power of one joule per second a "watt" (W).
Conversion Details
Power conversion is based on the watt (W), representing work done per unit time.
Common conversions: 1 hp ≈ 745.7 W, 1 metric hp ≈ 735.5 W, 1 kW ≈ 1.341 hp.