Convert

Metric horsepower to Mechanical horsepower

Exact answer: 1 PS = 0.98632007062 hp (exact defined factor)

Metric horsepower and Mechanical horsepower describe the same quantity from the Power family but come from different systems of units. The factor is defined exactly. Power figures appear in vehicle documents, engine data, heating load calculations and appliance ratings.

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Convert units with formula, context and precision

UnitCloud is a local measurement lab for everyday work, engineering, IT, energy, mobility and design. Every conversion shows result, formula, base unit, rounding and the common mistake.

What do you want to convert?

From1 PS

Result0.98632 hp

Factor1 PS = 0.98632007062 hp

Source basisBIPM SI Brochure · NIST Guide to SI Appendix B

Examples

011 PS = 0.98632 hp

Example value from the reference table. Internal calculation uses stored factors; display output is rounded.

02Common mistake

PS and hp are not identical. Vehicle data often uses metric horsepower, while US/UK contexts often use mechanical horsepower.

03Base unit: W

1 PS = 735.49875 W. Then the value is converted through the base unit W into Mechanical horsepower.

Table

Metric horsepower to Mechanical horsepower
Metric horsepower	Mechanical horsepower
1	0.98632
10	9.863201
50	49.316004
100	98.632007
200	197.264014
500	493.160035

Formula

1 PS = 735.49875 W. Then the value is converted through the base unit W into Mechanical horsepower.

Sources

BIPM SI BrochureSI base units, prefixes and official SI context.NIST Guide to SI Appendix BNIST conversion-factor method and non-SI factors.

Related conversions

Kilowatt to Metric horsepowerkW → PSPower Metric horsepower to KilowattPS → kWPower Kilowatt to Mechanical horsepowerkW → hpPower Mechanical horsepower to Metric horsepowerhp → PSPower

Search and practice paths

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Factor origin

Factors come from the stored source family and are not derived from rounded display values.

Rounding rule

UnitCloud keeps calculating with stored factors and rounds only the displayed output by selected precision.

When not to use

Do not use as the sole basis for official, medical, safety-critical or contractual decisions.

Citation

Citation note: UnitCloud, conversion with formula, sources reviewed: September 2026. Power. Source basis: BIPM SI Brochure · NIST Guide to SI Appendix B.

Common questions

What is the factor for Metric horsepower to Mechanical horsepower?

1 PS = 0.98632007062 hp

Which formula does Metric horsepower to Mechanical horsepower use?

1 PS = 735.49875 W. Then the value is converted through the base unit W into Mechanical horsepower.

What is the most common mistake?

PS and hp are not identical. Vehicle data often uses metric horsepower, while US/UK contexts often use mechanical horsepower.

When should I verify the result?

Do not use as the sole basis for official, medical, safety-critical or contractual decisions.