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Kilowatt-seconds to Horsepower (metric) hours Converter (kW·s to hp·h (metric))

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Live Conversion • ISO 80000-5:2019 Certified
1 Kilowatt-second = 0.00037767267 Horsepower (metric) hour
1 kW·s = 0.000377673 hp·h (metric) • 1 hp·h (metric) = 2647.7955 kW·s
Kilowatt-second to Horsepower (metric) hour: One Kilowatt-second is equal to 0.00037767267 Horsepower (metric) hours.
Certified Authority Value
0.00037767
hp·h (metric)
Exact: 1 hp·h (metric) ≡ 2647.7955 kW·s
kW·s
kW·s
Swap to Horsepower (metric) hour to Kilowatt-second
Swap to Horsepower (metric) hour to Kilowatt-second
hp·h (metric)
hp·h (metric) 0.00037767267
Quick Values:
Conversion Formula
To convert Kilowatt-second to Horsepower (metric) hour, multiply by 0.00037767267
kW·s × 0.00037767267 = hp·h (metric)

Calculation: 1 kW·s × 0.00037767267 = 0.00037767267 hp·h (metric)

Common Kilowatt-second to Horsepower (metric) hour Calculations

Quick-lookup reference table showing calculated equivalents for standard increments between Kilowatt-second (kW·s) and Horsepower (metric) hour (hp·h (metric)).

Tap any row to calculate
Kilowatt-second to Horsepower (metric) hour: Primary Direct Table (15 Steps)
Kilowatt-second to Horsepower (metric) hour Conversion Reference Table
Conversion & Equivalent Value Scientific Notation
0.001 kW·s 3.776727 × 10⁻⁷ hp·h (metric) 3.777 × 10⁻⁷
0.01 kW·s 3.776727 × 10⁻⁶ hp·h (metric) 3.777 × 10⁻⁶
0.1 kW·s 3.776727 × 10⁻⁵ hp·h (metric) 3.777 × 10⁻⁵
0.5 kW·s 0.000188836 hp·h (metric) 1.888 × 10⁻⁴
1 kW·s 0.000377673 hp·h (metric) 3.777 × 10⁻⁴
2 kW·s 0.000755345 hp·h (metric) 7.553 × 10⁻⁴
5 kW·s 0.00188836 hp·h (metric) 1.888 × 10⁻³
10 kW·s 0.00377673 hp·h (metric) 3.777 × 10⁻³
20 kW·s 0.00755345 hp·h (metric) 7.553 × 10⁻³
25 kW·s 0.00944182 hp·h (metric) 9.442 × 10⁻³
50 kW·s 0.0188836 hp·h (metric) 1.888 × 10⁻²
100 kW·s 0.0377673 hp·h (metric) 3.777 × 10⁻²
250 kW·s 0.0944182 hp·h (metric) 9.442 × 10⁻²
500 kW·s 0.188836 hp·h (metric) 1.888 × 10⁻¹
1000 kW·s 0.377673 hp·h (metric) 3.777 × 10⁻¹
Horsepower (metric) hour to Kilowatt-second: Reciprocal Summary
Horsepower (metric) hour to Kilowatt-second Conversion Reference Table
Reciprocal & Equivalent Value Scientific Notation
1 hp·h (metric) 2647.7955 kW·s 2.648 × 10³
5 hp·h (metric) 13238.9775 kW·s 1.324 × 10⁴
10 hp·h (metric) 26477.955 kW·s 2.648 × 10⁴
50 hp·h (metric) 132389.775 kW·s 1.324 × 10⁵
100 hp·h (metric) 264779.55 kW·s 2.648 × 10⁵
View Complete 15-Row Horsepower (metric) hour to Kilowatt-second Table

Real-World Context & Everyday Benchmarks

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To help contextualize these units in everyday life, science, and engineering, here are verified real-world reference points for Kilowatt-second (kW·s) and Horsepower (metric) hour (hp·h (metric)):

Kilowatt-second References:

  • Electrical energy unit equivalent to exactly 1,000 joules (1 kJ) 1 kW·s

Horsepower (metric) hour References:

  • Mechanical work performed by one metric horsepower engine running for one hour (2.648 MJ) 1 hp·h (metric)

Tap any benchmark above to automatically calculate its exact equivalent in Horsepower (metric) hour.

ISQ Dimension: [M L² T⁻²] Coherent SI Unit: joule (J) Chemical Engineering, Solutions & Physical Chemistry

How to Convert Kilowatt-second to Horsepower (metric) hour

Converting Kilowatt-second (kW·s) to Horsepower (metric) hour (hp·h (metric)) is a core calculation in Energy and Work, which quantifies the physical capacity to perform mechanical work, generate heat, or emit electromagnetic radiation. This calculation navigates the boundary between the International Metric System (SI) and British Imperial / US Customary engineering standards. In contemporary metrology, Imperial units are defined in terms of exact SI standards via international agreements—notably NIST SP 811 and the 1959 International Yard and Pound Agreement. Exactly 1 Kilowatt-second equals 0.000377673 Horsepower (metric) hour, while 1 hp·h (metric) equals 2647.7955 kW·s.

Direct Factor1 kW·s = 0.000377673 hp·h (metric)
Inverse Ratio1 hp·h (metric) = 2647.7955 kW·s
Conversion ScaleMetric SI to British Imperial / US Customary Bridge
First-Principles SI Derivation ProofNIST SP 811 / ISO 80000 Compliance

Mathematical Conversion Derivation via Coherent SI Base Unit

Under the International System of Quantities (ISQ), dimensional conversion between non-SI units is rigorously resolved by bridging through the coherent SI base unit (joule (J)) without arbitrary rounding:

Vtarget=Vsource×(ksource→SIktarget→SI)V_{\text{target}} = V_{\text{source}} \times \left( \frac{k_{\text{source} \to \text{SI}}}{k_{\text{target} \to \text{SI}}} \right)
Universal Dimensional Conversion Law (ISO 80000 / NIST SP 811)
1. Source SI Bridge (ksource):1 kW·s = 1000 joule (J)
2. Target SI Bridge (ktarget):1 hp·h (metric) = 2647795.5 joule (J)
Step-by-step substitution for Kilowatt-second → Horsepower (metric) hour:V(hp·h (metric)) = V(kW·s) × ( 1000 / 2647795.5 ) = V(kW·s) × 0.000377673
Mathematical FormulaValue in Horsepower (metric) hour = Value in Kilowatt-second × 0.00037767267Direct computational formula applied for standard conversion.
Worked Example

Evaluating an input of 50 Kilowatt-second (kW·s) produces 0.0188836 Horsepower (metric) hour (hp·h (metric)). In heavy-duty utility and industrial workloads, 10000 kW·s equals 3.776727 hp·h (metric).

Inverse check: 1 hp·h (metric) = 2647.7955 kW·s.

Understanding Kilowatt-second and Horsepower (metric) hour

Kilowatt-second

kW·s
SI Multiple

A Kilowatt-second (kW·s) is a decimal multiple of the SI-derived unit for energy and work.

Applications & Practical Context

In practical energy terms, a electrical energy unit equivalent to exactly 1,000 joules (1 kJ) equals 1 kW·s.

Physical Setup

An energy quantity of 1 kW·s corresponds to 1000 J (performing 1000 joules of work or heat transfer).

Conversion to SI Unit: joule (J)
1 kW·s = 1000 J

Horsepower (metric) hour

hp·h (metric)
Standard Unit

A Horsepower (metric) hour (hp·h (metric)) is a recognized unit for energy and work.

Applications & Practical Context

In practical energy terms, a mechanical work performed by one metric horsepower engine running for one hour (2.648 MJ) equals 1 hp·h (metric).

Physical Setup

An energy quantity of 1 hp·h (metric) corresponds to 2647795.5 J (performing 2647795.5 joules of work or heat transfer).

Conversion to SI Unit: joule (J)
1 hp·h (metric) = 2647795.5 J

Domain Metrology & Engineering Applications

Governing Law & Equation

First Law of Thermodynamics (Conservation of Energy: ΔU = Q - W)

Measurement Instrumentation

Rigorously quantified in laboratory and field settings using isoperibol bomb calorimeters, optical laser pulse joulemeters, and digital revenue-grade electric energy meters.

Primary Industry Sectors

Applied across electric power utility metering, thermal energy storage design, chemical plant process enthalpies, and ballistic impact engineering under international metrology standard ISO 80000-5:2019, NIST SP 811.

Physical Orders of Magnitude & Laboratory Reference Benchmarks

Physical Phenomenon / Engineering ReferenceReference ValueConverted to Horsepower (metric) hour
Electrical energy unit equivalent to exactly 1,000 joules (1 kJ)1 kW·s0.000377673 hp·h (metric)
Institutional Metrology & Standard Authority:

Formulas, conversion coefficients, and base definitions on this page strictly adhere to the ISO 80000-5:2019, NIST SP 811 and the BIPM SI Brochure (9th Edition). Governed by First Law of Thermodynamics (Conservation of Energy: ΔU = Q - W) under ISO 80000 dimensional vector [M L² T⁻²].

Multi-Variable Engineering Bridge Thermal Enthalpy & Continuous Power

Energy to Continuous Operating Power Bridge (Watts • Kilowatts • Megawatts • Horsepower)

Calculate required average generating or consuming power P = E / t over specified timespans, bridging energy [M L² T⁻²] with continuous power [M L² T⁻³].

P = E / t
Vector: [J] ÷ [s] → [W]
Live Calculated Bridge Equivalent:
1 kW·s at 1 Hour Continuous Run (3,600 s) = 0.2778 W
Equals 0.0002778 kW • 2.777778 × 10⁻⁷ MW • 0.0003725 hp
SI Power
0.2778
W
Watts
Grid / Utility
0.0002778
kW
Kilowatts
Power Plant
2.777778 × 10⁻⁷
MW
Megawatts
Mechanical Rating
0.0003725
hp
Horsepower (Mechanical)
Metric Horsepower
0.0003777
PS
Metric Horsepower (PS)
HVAC Thermal Rating
0.95
BTU/h
BTU per Hour
  1. 1. Normalize Input to SI Base Unit (J):
    E = 1 kW·s × 1000 = 1000 J
  2. 2. Apply Engineering Parameter (t):
    Selected condition: 1 Hour Continuous Run (3,600 s) at t = 3600 s
  3. 3. Execute Governing Physical Law in SI Units:
    P = E / t = (1000 J) ÷ (3600 s) = 0.277778 W
  4. 4. Convert to Standard Engineering Units:
    • W: 0.277778 × 1 = 0.2778 W (Watts) • kW: 0.277778 × 0.001 = 0.0002778 kW (Kilowatts) • MW: 0.277778 × 1 × 10⁻⁶ = 2.777778 × 10⁻⁷ MW (Megawatts) • hp: 0.277778 × 0.001341 = 0.0003725 hp (Horsepower (Mechanical)) • PS: 0.277778 × 0.00136 = 0.0003777 PS (Metric Horsepower (PS)) • BTU/h: 0.277778 × 3.4121 = 0.95 BTU/h (BTU per Hour)
Explore Full Power Converter →
Engineering Substance / Operating Standard Parameter Value (s) Reference State / Condition Typical Industrial & Engineering Application
1 Second Instant Discharge 1 1.0 s Peak pulse discharge rating
1 Minute Fast Delivery (60 s) 60 60 s EV fast acceleration or battery boost
1 Hour Continuous Run (3,600 s) 3600 3,600 s (1 hour) Standard 1-hour energy delivery
8 Hours (28,800 s) 28800 28,800 s (8 hours) Single shift continuous draw
24 Hours (86,400 s) 86400 86,400 s (24 hours) Full day steady-state consumption
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Frequently Asked Questions

There are exactly 0.00037767267 horsepower (metric) hours (hp·h (metric)) in 1 kilowatt-second (kW·s). To calculate larger amounts manually, simply multiply your total number of kilowatt-seconds by the conversion multiplier of 0.00037767267.

The mathematical formula to convert kilowatt-seconds to horsepower (metric) hours is: [value] * 0.00037767267 = horsepower (metric) hours. Rather than doing the math manually, you can use our high-precision online calculator to process this exact equation instantly without rounding errors.

To perform the reverse calculation from horsepower (metric) hours back to kilowatt-seconds, you must divide your starting value by 0.00037767267. Our bidirectional tool automatically computes this inverse equation the moment you type into the horsepower (metric) hour input field.

1 Horsepower (metric) hour is larger than 1 Kilowatt-second. Specifically, 1 Kilowatt-second equals 0.00037767267 horsepower (metric) hours, meaning 1 Horsepower (metric) hour is 2647.7955 times larger than 1 Kilowatt-second (a difference of 3.42 orders of magnitude). Expressing measurements in kilowatt-seconds requires a larger numerical value to represent the equivalent physical magnitude.

A typical electrical energy unit equivalent to exactly 1,000 joules (1 kJ) measures 1 kW·s, which corresponds to 0.0003777 Horsepower Metric Hour (Horsepower (metric) hour).

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