Fidamen

Convert Kilowatts to Metric Horsepower - Power Converter

This tool converts electrical or mechanical power values expressed in kilowatts (kW) to metric horsepower (often abbreviated PS or mhp). The conversion is a fixed mathematical relationship and is appropriate for reporting, documentation, and unit harmonization.

Use the converter for single-value conversions where measurement precision and reporting standards matter. For measured engine or motor power, ensure the underlying measurement method and correction factors follow applicable measurement standards and calibration procedures before converting units.

Updated Nov 18, 2025QA PASS — golden 25 / edge 120Run golden-edge-2026-01-23

Governance

Record 143aa3d1b867 • Reviewed by Fidamen Standards Committee

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Methodology

Conversion uses the internationally accepted definitions of the units. Metric horsepower (Pferdestärke, PS) is defined such that 1 PS = 0.73549875 kW. The converter applies this fixed relationship and preserves significant figures according to user rounding rules.

This page clarifies the numeric relationship, shows compact formula forms, offers examples, and flags practical accuracy considerations such as instrument calibration, measurement uncertainty, and applicable standards for reporting measured power.

Key takeaways

Multiply kW by 1.3596216173033624 or divide by 0.73549875 to convert to metric horsepower. Preserve significant digits and reference measurement standards when converting reported measured power.

Cite the measurement standard and instrument calibration status when converting values that originate from physical tests or certified reports.

Worked examples

Example 1: 1.00 kW → 1.3596216 metric hp (1.0 ÷ 0.73549875 = 1.3596216173...).

Example 2: 50 kW → 67.9810809 metric hp (50 ÷ 0.73549875 ≈ 67.981080865...).

Example 3: 0.73549875 kW → 1.0000000 metric hp (by definition: 0.73549875 ÷ 0.73549875 = 1).

F.A.Q.

What is metric horsepower and how does it differ from mechanical (imperial) horsepower?

Metric horsepower (PS) is a unit historically used in many countries and is defined as 0.73549875 kilowatts. Mechanical or imperial horsepower (commonly used in the United States) has a slightly different value (approximately 0.74569987 kW). Use the appropriate horsepower variant for legal, technical, or specification contexts.

How precise is the conversion?

The conversion is exact based on the defined constant (1 PS = 0.73549875 kW). Practical precision depends on the measurement uncertainty of the original kW value, instrument calibration, and rounding. Retain sufficient significant digits during calculation and round only for presentation.

Do measurement standards affect how I should convert reported power?

Yes. When converting measured engine or motor power, ensure measurements conform to relevant standards (for example, standards covering measurement procedures, ambient corrections, and instrument calibration). The numeric conversion between units is independent of test method, but reporting must reference the measurement standard used.

Are there safety or regulatory considerations when measuring power?

Yes. Follow occupational safety standards and safe work procedures when measuring machinery or engines. Consult applicable safety regulations, lockout/tagout procedures, and manufacturer guidance before performing measurements or adjustments.

Sources & citations

Further resources

Versioning & Change Control

Audit record (versions, QA runs, reviewer sign-off, and evidence).

Record ID: 143aa3d1b867

What changed (latest)

v1.0.0 • 2025-11-18 • MINOR

Initial publication and governance baseline.

Why: Published with reviewed formulas, unit definitions, and UX controls.

Public QA status

PASS — golden 25 + edge 120

Last run: 2026-01-23 • Run: golden-edge-2026-01-23

Engine

v1.0.0

Data

Baseline (no external datasets)

Content

v1.0.0

UI

v1.0.0

Governance

Last updated: Nov 18, 2025

Reviewed by: Fidamen Standards Committee (Review board)

Credentials: Internal QA

Risk level: low

Reviewer profile (entity)

Fidamen Standards Committee

Review board

Internal QA

Entity ID: https://fidamen.com/reviewers/fidamen-standards-committee#person

Semantic versioning

  • MAJOR: Calculation outputs can change for the same inputs (formula, rounding policy, assumptions).
  • MINOR: New features or fields that do not change existing outputs for the same inputs.
  • PATCH: Bug fixes, copy edits, or accessibility changes that do not change intended outputs except for previously incorrect cases.

Review protocol

  • Verify formulas and unit definitions against primary standards or datasets.
  • Run golden-case regression suite and edge-case suite.
  • Record reviewer sign-off with credentials and scope.
  • Document assumptions, limitations, and jurisdiction applicability.

Assumptions & limitations

  • Uses exact unit definitions from the Fidamen conversion library.
  • Internal calculations use double precision; display rounding follows the unit's configured decimal places.
  • Not a substitute for calibrated instruments in regulated contexts.
  • Jurisdiction-specific rules may require official guidance.

Change log

v1.0.0 • 2025-11-18 • MINOR

Initial publication and governance baseline.

Why: Published with reviewed formulas, unit definitions, and UX controls.

Areas: engine, content, ui • Reviewer: Fidamen Standards Committee • Entry ID: 49059053c77b