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Erg per Second to Metric Horsepower Converter

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

Quick Answer

1 Erg per Second = 1.359622e-10 PS

Formula: Erg per Second × conversion factor = Metric Horsepower

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

Erg per Second to Metric Horsepower Calculator

How to Use the Erg per Second to Metric Horsepower Calculator:

  1. Enter the value you want to convert in the 'From' field (Erg per Second).
  2. The converted value in Metric Horsepower 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 Erg per Second to Metric Horsepower: Step-by-Step Guide

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

Formula:

PS = erg/s × 1.35962e-10

Example Calculation:

1 erg/s = 1.359622e-10 PS

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 Erg per Second and a Metric Horsepower?

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

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

1 PS = 735.5 W = 0.7355 kW = 0.9863 hp (mechanical) = 75 kgf⋅m/s = 2,510 BTU/h

Names by region:

  • PS (Pferdestärke) - German
  • CV (Chevaux Vapeur) - French
  • pk (paardenkracht) - Dutch
  • hk (hästkraft) - Swedish
  • LE (Leistungseinheit) - Older German

All equal exactly 735.5 watts.

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

Common Uses and Applications: erg/s vs PS

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

Common Uses for 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.

When to Use PS

Automotive: Engine power ratings in Europe, Asia (100-500 PS typical). Motorcycles: Engine power specifications (15-200 PS). Industrial: European motors, pumps, machinery (kW now more common). Marine: European boat engines, outboards (5-500 PS).

Additional Unit Information

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).

About Metric Horsepower (PS)

How do I convert PS to horsepower (hp)?

Formula: hp = PS × 0.9863 (or PS ÷ 1.014)

Examples:

  • 100 PS = 98.6 hp
  • 150 PS = 148 hp
  • 200 PS = 197 hp
  • 300 PS = 296 hp

Reverse: hp × 1.014 = PS

PS to HP converter →

How do I convert PS to kilowatts?

Formula: kW = PS × 0.7355 (or PS ÷ 1.36)

Examples:

  • 75 PS = 55.2 kW
  • 100 PS = 73.6 kW
  • 150 PS = 110.3 kW
  • 200 PS = 147.1 kW

Quick approximation: Divide PS by 1.36 to get kW

PS to kW converter →

What is the difference between PS and hp?

Metric HP (PS): 735.5 W (75 kgf⋅m/s, Europe/Asia) Mechanical HP (hp): 745.7 W (550 ft⋅lb/s, US/UK)

Difference: PS is 1.4% less than hp

Conversion: 1 PS = 0.9863 hp, 1 hp = 1.014 PS

Example:

  • BMW 330i: 258 PS = 254 hp = 190 kW
  • Ford Mustang: 450 hp = 456 PS = 336 kW

Modern trend: Manufacturers increasingly list all three (PS, hp, kW)

Why does Europe use PS instead of hp?

Historical: Metric system adoption in Continental Europe

Definition basis:

  • PS based on metric units (75 kg lifted 1 m in 1 s)
  • hp based on imperial units (550 lb lifted 1 ft in 1 s)

Current practice:

  • Official: kW is legal unit (EU regulations)
  • Marketing: PS still widely used in car advertising
  • Dual listing: Most specs show "kW (PS)" format

Example spec: "110 kW (150 PS)" on European car brochures

How do I compare engine specs in different units?

Three common formats:

  1. US/Canada: hp (horsepower mechanical)
  2. Europe/Asia: PS (metric horsepower)
  3. International: kW (kilowatts)

Quick comparison table:

| hp | PS | kW | |-----|-----|-----| | 100 | 101 | 75 | | 150 | 152 | 112 | | 200 | 203 | 149 | | 300 | 304 | 224 |

Conversion shortcuts:

  • hp ≈ PS (within 1-2%)
  • kW × 1.36 ≈ PS
  • hp × 0.746 ≈ kW

Example: Car rated at 184 PS = 181 hp = 135 kW (all same power)

Conversion Table: Erg per Second to Metric Horsepower

Erg per Second (erg/s)Metric Horsepower (PS)
0.50
10
1.50
20
50
100
250
500
1000
2500
5000
1,0000

People Also Ask

How do I convert Erg per Second to Metric Horsepower?

To convert Erg per Second to Metric Horsepower, enter the value in Erg per Second 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 Erg per Second to Metric Horsepower?

The conversion factor depends on the specific relationship between Erg per Second and Metric Horsepower. 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 Metric Horsepower back to Erg per Second?

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

Learn more →

What are common uses for Erg per Second and Metric Horsepower?

Erg per Second and Metric Horsepower 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