What is an erg per second (erg/s)?

An erg per second is a CGS unit of power representing one erg of energy transferred per second, equal to 1×10⁻⁷ watt in SI units.

What does femtowatt (fW) measure?

A femtowatt is an SI derived unit of power equal to 10⁻¹⁵ watt and is used to quantify extremely small power levels such as in sensitive detectors and nanoscale electronics.

Why convert erg/second to femtowatt?

Converting erg/second to femtowatt helps express CGS-based power into SI units suitable for very low-power measurements in fields like astrophysics, radio astronomy, and nanotechnology.

How to Convert from Erg/second [erg/s] to Femtowatt [fW]

Learn how to convert power measurements from erg per second (erg/s), a CGS unit, to femtowatt (fW), an SI derived unit for extremely small power levels. Understand the applications, conversion formula, examples, and best practices for accurate conversion.

Erg/second [erg/s]

Femtowatt [fW]

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Erg/second [erg/s] to Femtowatt [fW] Conversion Table

Erg/second [erg/s]	Femtowatt [fW]

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

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Interval

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Erg/second [erg/s] to Femtowatt [fW] Conversion Table
Erg/second [erg/s]	Femtowatt [fW]

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What Is This Tool?

This unit converter allows you to transform power values measured in erg per second (erg/s), a CGS unit commonly used in astrophysics, into femtowatt (fW), an SI unit suited for quantifying very small power levels in sensitive and nanoscale systems.

How to Use This Tool?

Enter the power value in erg/second [erg/s] you want to convert
Select erg/second as the input unit and femtowatt [fW] as the output unit
Click the convert button to see the equivalent value in femtowatt
Review the result and apply it according to your measurement needs

Key Features

Converts power from erg/second to femtowatt accurately using defined conversion rate
Supports applications in astrophysics, radio astronomy, and nanoscale electronics
Easy-to-use interface for quick conversion without complex formulas
Browser-based tool accessible without downloads or installations

Examples

2 erg/s converts to 200000000 fW
0.5 erg/s converts to 50000000 fW

Common Use Cases

Expressing luminosities and radiative power of astronomical objects like stars and black holes
Reporting power values in CGS-based calculations or scientific literature
Measuring received signal power and noise floors in radio astronomy and microwave receivers
Describing output power in ultra-sensitive photodetectors and single-photon counters
Quantifying power dissipation in cryogenic, nanoscale, or ultra-low-power electronic devices

Tips & Best Practices

Double-check unit selections to ensure accurate conversion results
Be mindful of the large conversion factor (10⁸) to avoid scaling mistakes
Use this converter primarily for astrophysics or specialized scientific contexts
Apply results carefully when working with very small power measurements in nanoscale systems

Limitations

Large numerical factor in conversion may lead to errors if not handled carefully
Erg/second is less common in modern SI contexts, mostly used in legacy or specific fields
Conversion assumes familiarity with both CGS and SI power units

Frequently Asked Questions

What is an erg per second (erg/s)?: An erg per second is a CGS unit of power representing one erg of energy transferred per second, equal to 1×10⁻⁷ watt in SI units.
What does femtowatt (fW) measure?: A femtowatt is an SI derived unit of power equal to 10⁻¹⁵ watt and is used to quantify extremely small power levels such as in sensitive detectors and nanoscale electronics.
Why convert erg/second to femtowatt?: Converting erg/second to femtowatt helps express CGS-based power into SI units suitable for very low-power measurements in fields like astrophysics, radio astronomy, and nanotechnology.

Key Terminology

Erg/second [erg/s]: A CGS unit of power indicating energy transfer of one erg per second, equivalent to 1×10⁻⁷ watt.
Femtowatt [fW]: An SI derived unit of power equal to 10⁻¹⁵ watt, used for measuring extremely small power levels.
Power: The rate at which energy is transferred or converted per unit time.

Quick Knowledge Check

What is the conversion factor from erg/second to femtowatt?

1 erg/s = 10 fW

1 erg/s = 100000000 fW

1 erg/s = 0.0001 fW

In which field is erg/second commonly used?

Modern electrical engineering

Astrophysics and related sciences

Household power measurements

What is a typical use case for femtowatt units?

Measuring solar panel output

Quantifying extremely low-level signals in photodetectors

Calculating car engine power

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