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Kilowatt to Erg per Second Converter

Convert kilowatts to erg/s with our free online power converter.

Quick Answer

1 Kilowatt = 10000000000 erg/s

Formula: Kilowatt × conversion factor = Erg per Second

Use the calculator below for instant, accurate conversions.

Our Accuracy Guarantee

All conversion formulas on UnitsConverter.io have been verified against NIST (National Institute of Standards and Technology) guidelines and international SI standards. Our calculations are accurate to 10 decimal places for standard conversions and use arbitrary precision arithmetic for astronomical units.

Last verified: February 2026Reviewed by: Sam Mathew, Software Engineer

Kilowatt to Erg per Second Calculator

How to Use the Kilowatt to Erg per Second Calculator:

  1. Enter the value you want to convert in the 'From' field (Kilowatt).
  2. The converted value in Erg per Second will appear automatically in the 'To' field.
  3. Use the dropdown menus to select different units within the Power category.
  4. Click the swap button (⇌) to reverse the conversion direction.
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How to Convert Kilowatt to Erg per Second: Step-by-Step Guide

Converting Kilowatt to Erg per Second involves multiplying the value by a specific conversion factor, as shown in the formula below.

Formula:

erg/s = kW × 10000000000

Example Calculation:

1 kW = 10000000000 erg/s

Disclaimer: For Reference Only

These conversion results are provided for informational purposes only. While we strive for accuracy, we make no guarantees regarding the precision of these results, especially for conversions involving extremely large or small numbers which may be subject to the inherent limitations of standard computer floating-point arithmetic.

Not for professional use. Results should be verified before use in any critical application. View our Terms of Service for more information.

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What is a Kilowatt and a Erg per Second?

1 kW = 1,000 W = 1.341 hp = 3,412 BTU/h = 1,000 J/s

1 erg/s = 10^-7 W = 0.0000001 W = 0.0000000001 kW

Erg definition: 1 erg = 1 dyne⋅cm = 10^-7 joules

Note: The Kilowatt is part of the imperial/US customary system, primarily used in the US, UK, and Canada for everyday measurements. The Erg per Second belongs to the imperial/US customary system.

Common Uses and Applications: kilowatts vs erg/s

Explore the typical applications for both Kilowatt (imperial/US) and Erg per Second (imperial/US) to understand their common contexts.

Common Uses for kilowatts

Appliances: Heaters (1-2 kW), microwaves (0.8-1.2 kW), electric ovens (2-5 kW). EVs: Charging power (3.7-22 kW home, 50-350 kW fast charging). Solar: Residential systems (5-10 kW capacity). HVAC: Air conditioner power (2-7 kW for homes).

When to Use erg/s

Astrophysics: Stellar luminosity, cosmic ray power, radiation output. Older Literature: Pre-1960 physics textbooks, historical research. Spectroscopy: Radiation intensity in some fields. Academic: Teaching unit systems, dimensional analysis.

Additional Unit Information

About Kilowatt (kW)

How do I convert kW to horsepower?

Formula: hp = kW × 1.341

Examples:

  • 10 kW = 13.4 hp
  • 75 kW = 100.6 hp (100 hp)
  • 100 kW = 134.1 hp
  • 250 kW = 335.3 hp

kW to HP converter →

What is the difference between kW and kWh?

kW (kilowatt) = Power (rate of energy use right now) kWh (kilowatt-hour) = Energy (total amount used over time)

Analogy:

  • kW = speedometer (speed right now)
  • kWh = odometer (total distance traveled)

Example: 2 kW heater × 3 hours = 6 kWh energy consumed

How much does 1 kW cost per hour?

Cost = kW × hours × electricity rate

Examples (at $0.15/kWh average US rate):

  • 1 kW for 1 hour = 1 kWh = $0.15
  • 2 kW heater for 8 hours = 16 kWh = $2.40
  • 100W light (0.1 kW) for 10 hours = 1 kWh = $0.15

Rates vary: $0.09-0.40/kWh depending on location and time of day.

How many kW is a typical home solar system?

Residential solar systems:

  • Small (2-4 people): 3-5 kW (10-15 panels)
  • Average home: 5-8 kW (15-24 panels)
  • Large home: 8-12 kW (24-36 panels)
  • Very large: 12-15+ kW (36-45+ panels)

Production: ~4-5 kWh per kW installed per day (varies by location, season).

Example: 6 kW system produces ~24-30 kWh/day, ~730-900 kWh/month.

About Erg per Second (erg/s)

How do I convert erg/s to watts?

Formula: W = erg/s × 10^-7 (or erg/s ÷ 10,000,000)

Examples:

  • 10^7 erg/s = 1 W
  • 10^8 erg/s = 10 W
  • 10^10 erg/s = 1,000 W = 1 kW
  • 10^13 erg/s = 1,000,000 W = 1 MW

erg/s to Watts converter →

Why do astrophysicists use erg/s for stars?

Historical: Astrophysics literature established with CGS units (pre-1960) Large numbers: 10^33 erg/s easier to write than 10^26 W in some contexts Convention: Astronomical journals still accept erg/s Transition: Modern papers increasingly use watts or solar luminosity units

Solar luminosity unit (L☉):

  • 1 L☉ = 3.828 × 10^26 W = 3.828 × 10^33 erg/s

Example: Sirius = 25 L☉ = 9.7 × 10^27 W = 9.7 × 10^34 erg/s

How do I convert between erg/s and J/s (watts)?

Relationship: 1 erg = 10^-7 joules

Therefore: 1 erg/s = 10^-7 J/s = 10^-7 W

Examples:

  • 10,000,000 erg/s = 1 J/s = 1 W
  • 10^10 erg/s = 1,000 J/s = 1 kW
  • 3.828 × 10^33 erg/s = 3.828 × 10^26 W (Sun)

What is the Sun's power output?

In different units:

  • Watts: 3.828 × 10^26 W
  • erg/s: 3.828 × 10^33 erg/s
  • Joules/s: 3.828 × 10^26 J/s
  • Horsepower: 5.13 × 10^23 hp

Perspective:

  • Earth receives: ~1.74 × 10^17 W (1.74 × 10^24 erg/s)
  • Only ~0.00000005% of Sun's total output
  • Sun converts ~4 million tons of mass to energy per second (E=mc²)

Why transition from CGS to SI units?

SI advantages:

  • Universal: Works across all fields (not just mechanics)
  • Electrical compatibility: Watts naturally link mechanical and electrical power
  • Simpler prefixes: kW, MW, GW easier than 10^10, 10^13, 10^16 erg/s
  • International standard: Adopted globally since 1960

CGS still used: Some specialized fields (astrophysics, Gaussian units for E&M)

Modern trend: Even astrophysics journals increasingly accept SI units (watts, joules).

Conversion Table: Kilowatt to Erg per Second

Kilowatt (kW)Erg per Second (erg/s)
0.55,000,000,000
110,000,000,000
1.515,000,000,000
220,000,000,000
550,000,000,000
10100,000,000,000
25250,000,000,000
50500,000,000,000
1001,000,000,000,000
2502,500,000,000,000
5005,000,000,000,000
1,00010,000,000,000,000

People Also Ask

How do I convert Kilowatt to Erg per Second?

To convert Kilowatt to Erg per Second, enter the value in Kilowatt in the calculator above. The conversion will happen automatically. Use our free online converter for instant and accurate results. You can also visit our power converter page to convert between other units in this category.

Learn more →

What is the conversion factor from Kilowatt to Erg per Second?

The conversion factor depends on the specific relationship between Kilowatt and Erg per Second. You can find the exact conversion formula and factor on this page. Our calculator handles all calculations automatically. See the conversion table above for common values.

Can I convert Erg per Second back to Kilowatt?

Yes! You can easily convert Erg per Second back to Kilowatt by using the swap button (⇌) in the calculator above, or by visiting our Erg per Second to Kilowatt converter page. You can also explore other power conversions on our category page.

Learn more →

What are common uses for Kilowatt and Erg per Second?

Kilowatt and Erg per Second are both standard units used in power measurements. They are commonly used in various applications including engineering, construction, cooking, and scientific research. Browse our power converter for more conversion options.

For more power conversion questions, visit our FAQ page or explore our conversion guides.

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Verified Against Authority Standards

All conversion formulas have been verified against international standards and authoritative sources to ensure maximum accuracy and reliability.

NIST Reference on Constants, Units and Uncertainty

National Institute of Standards and Technology — Fundamental physical constants and unit conversions

BIPM SI Units

Bureau International des Poids et Mesures — International System of Units (SI) definitions and standards

ISO 80000

International Organization for Standardization — Quantities and units international standards series

Last verified: February 19, 2026