Online Power Units Converter
How to Convert from Joule/hour [J/h] to Femtowatt [fW]?

How to Convert from Joule/hour [J/h] to Femtowatt [fW]?

Learn how to convert power measurements from joule per hour to femtowatt, an essential tool for expressing very low power levels in scientific and engineering contexts.

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Joule/hour [J/h] to Femtowatt [fW] Conversion Table

Joule/hour [J/h] Femtowatt [fW]

Custom Unit Conversion Table Generator – Instant Printable Conversion Tables

Enter the starting number (positive decimal or integer ≥ 0). Example: 0.1, 1, 5.
Enter the ending number (positive decimal or integer > Start Value). Example: 10, 50, 100.
Enter the step size (positive decimal > 0 and < End Value – Start Value). Example: 1.0, 2.5.
Joule/hour [J/h] to Femtowatt [fW] Conversion Table
Joule/hour [J/h] Femtowatt [fW]

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  19. How to convert from deciwatt [dW] to joule/hour [J/h]?
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  21. How to convert from centiwatt [cW] to joule/hour [J/h]?
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  23. How to convert from milliwatt [mW] to joule/hour [J/h]?
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  25. How to convert from microwatt [µW] to joule/hour [J/h]?
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  27. How to convert from nanowatt [nW] to joule/hour [J/h]?
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  29. How to convert from picowatt [pW] to joule/hour [J/h]?
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  31. How to convert from femtowatt [fW] to joule/hour [J/h]?
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  33. How to convert from attowatt [aW] to joule/hour [J/h]?
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  35. How to convert from horsepower [hp, hp (UK)] to joule/hour [J/h]?
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  141. How to convert from femtojoule/second [fJ/s] to joule/hour [J/h]?
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  143. How to convert from attojoule/second [aJ/s] to joule/hour [J/h]?
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  145. How to convert from joule/minute [J/min] to joule/hour [J/h]?
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  148. How to convert from joule/hour [J/h] to kilojoule/hour [kJ/h]?
  149. How to convert from kilojoule/minute [kJ/min] to joule/hour [J/h]?
  150. How to convert from joule/hour [J/h] to kilojoule/minute [kJ/min]?

What Is This Tool?

This converter transforms power values expressed in joule per hour (J/h) into femtowatt (fW). It is designed to help users represent slow energy transfer rates as extremely small instantaneous power levels, useful for scientific, engineering, and technical applications.

How to Use This Tool?

  • Enter the value in joule per hour (J/h) you wish to convert.
  • Select joule/hour as the input unit and femtowatt as the output unit.
  • Initiate the conversion to get the equivalent value expressed in femtowatt (fW).

Key Features

  • Converts joule per hour (J/h), a unit of power showing energy transfer per hour, into femtowatt (fW), a very small power unit.
  • Helpful for expressing ultra-low power levels relevant to nanoelectronics, cryogenics, astrophysics, and sensitive photodetection.
  • Easy-to-use interface translating long-duration energy measurements into instantaneous power units.

Examples

  • 2 J/h converts to 555555555555.56 fW by multiplying 2 with the conversion rate.
  • 0.5 J/h converts to 138888888888.89 fW by applying the conversion factor.

Common Use Cases

  • Expressing low continuous power or standby losses of small electronic devices measured over hours.
  • Supporting detailed power characterization in nanoelectronics and cryogenic experimental setups.
  • Monitoring extremely low-level signals and noise floors in radio astronomy and ultra-sensitive detectors.

Tips & Best Practices

  • Ensure accurate input values to maintain conversion precision given the large conversion factor.
  • Use specialized sensitive instruments to measure power levels in femtowatt units reliably.
  • Be aware that converting from long-duration energy units to instantaneous power might not reflect transient changes.

Limitations

  • The very large conversion factor demands careful handling of numerical precision.
  • Femtowatt measurements require advanced instruments typically found in specialized labs.
  • Conversion from energy over time to instantaneous power may not capture short-term power variations effectively.

Frequently Asked Questions

Why convert joule/hour to femtowatt?
Converting joule/hour to femtowatt allows expressing slow rates of energy transfer as extremely small instantaneous power levels, aiding in precise scientific and engineering analysis.

What fields typically use this conversion?
This conversion is common in nanoelectronics, cryogenics, astrophysics, and technologies involving ultra-sensitive photodetection.

Are femtowatt measurements easy to obtain?
Measurements in femtowatt require highly sensitive instruments usually available in specialized laboratory environments.

Key Terminology

Joule/hour (J/h)
A unit of power describing one joule of energy transferred or converted per hour, representing the rate of energy transfer over time.
Femtowatt (fW)
An SI derived unit of power equal to 10⁻¹⁵ watts, used to denote extremely small power levels in sensitive scientific measurements.
Power
The rate at which energy is transferred or converted, commonly measured in watts or derived units.

Quick Knowledge Check

What does joule/hour measure?
What is a femtowatt used to express?
Which of these is a limitation when converting joule/hour to femtowatt?