What is an attowatt used to measure?

An attowatt measures very small power levels such as optical power from single-photon detectors or power dissipation in nanoelectronics and ultra-low power sensors.

How is the joule per second unit related to watts?

A joule per second (J/s) is exactly the same as one watt (W) and is the SI unit for power measuring energy transfer per unit time.

Why convert attowatts to joule per second?

Converting to joule per second helps express ultra-low power levels in a standard SI unit that is widely used for engineering and physics comparisons.

How to Convert from Attowatt [aW] to Joule/second [J/s]?

Learn how to convert power measurements from attowatt (aW) to joule per second (J/s) using this easy-to-follow online unit converter designed for ultra-small power levels.

Attowatt [aW]

Joule/second [J/s]

Please check your input. It must be a valid numeric value.

Attowatt [aW] to Joule/second [J/s] Conversion Table

Attowatt [aW]	Joule/second [J/s]

Custom Unit Conversion Table Generator – Instant Printable Conversion Tables

Start Value

Enter the starting number (positive decimal or integer ≥ 0). Example: 0.1, 1, 5.

End Value

Enter the ending number (positive decimal or integer > Start Value). Example: 10, 50, 100.

Interval

Enter the step size (positive decimal > 0 and < End Value – Start Value). Example: 1.0, 2.5.

Attowatt [aW] to Joule/second [J/s] Conversion Table
Attowatt [aW]	Joule/second [J/s]

Explore More Power Units Converter

What Is This Tool?

This tool converts power units from attowatts, which denote extremely small energy transfer rates, to joule per second, the standard SI unit of power equivalent to watts.

How to Use This Tool?

Enter the power value in attowatts (aW) you wish to convert
Select attowatt as the input unit and joule per second as the output unit
Click the convert button to see the result instantly
View the output displayed in joule per second (J/s), the standard SI unit for power

Key Features

Converts from attowatt (aW) to joule per second (J/s)
Uses the exact conversion rate of 1 aW = 1×10⁻¹⁸ J/s
Ideal for ultra-sensitive and nanoscale power measurements
Web-based and easy to use without installation
Supports scientific and engineering applications

Examples

5 aW converts to 5 × 10⁻¹⁸ J/s or 5e-18 J/s
100 aW converts to 1 × 10⁻¹⁶ J/s or 1e-16 J/s

Common Use Cases

Measuring optical power levels in single-photon detectors and photodiodes
Evaluating power dissipation in nanoelectronic devices and ultra-low power sensors
Determining readout power for bolometers and cryogenic detectors in physics and astronomy
Comparing extremely small power levels to standard units in scientific research

Tips & Best Practices

Double-check the input value to ensure accurate conversion results
Understand that attowatt measurements may be affected by environmental noise
Use the converted joule per second value to relate ultra-low power to more common power units
Remember this conversion assumes ideal conditions without rounding errors at nanoscale levels

Limitations

Attowatt values represent extremely low power levels that may be limited by instrument sensitivity
Environmental factors and noise can affect measurement accuracy
Conversion presumes ideal conditions without considering practical rounding or measurement errors

Frequently Asked Questions

What is an attowatt used to measure?: An attowatt measures very small power levels such as optical power from single-photon detectors or power dissipation in nanoelectronics and ultra-low power sensors.
How is the joule per second unit related to watts?: A joule per second (J/s) is exactly the same as one watt (W) and is the SI unit for power measuring energy transfer per unit time.
Why convert attowatts to joule per second?: Converting to joule per second helps express ultra-low power levels in a standard SI unit that is widely used for engineering and physics comparisons.

Key Terminology

Attowatt [aW]: A unit of power equal to 10⁻¹⁸ watts, used to express extremely low energy transfer rates in scientific and engineering contexts.
Joule per second [J/s]: The SI derived unit of power representing one joule of energy transferred or converted per second, equivalent to one watt.
Power: The rate at which energy is transferred or converted, typically measured in watts or joule per second.

Quick Knowledge Check

What does one attowatt (aW) equal in joule per second (J/s)?

1e18 J/s

1e-18 J/s

1 J/s

Which unit is exactly equal to one joule per second?

Attowatt (aW)

Watt (W)

Kilowatt (kW)

In which field would you commonly find attowatt measurements?

Cooking appliances

Nanoelectronics

Automobile engines

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