How do you convert metric horsepower to horsepower?

To convert metric horsepower (PS) to horsepower (hp), multiply the power in metric horsepower by 0.98632 (horsepower = metric horsepower × 0.98632).

What is 300 metric horsepower in horsepower?

300 metric horsepower (300 PS) is equal to 295.89602 horsepower (295.89602 hp).

Which is larger, 1 horsepower (metric ps) (PS) or 1 horsepower (mechanical) (hp)?

One horsepower (mechanical) (hp) is larger than one horsepower (metric ps) (PS). Specifically, 1 hp equals 1.01387 PS, while 1 PS is 0.98632 hp.

How do I convert back from horsepower (hp) (hp) to metric horsepower (PS)?

To reverse the calculation from hp to PS, multiply your horsepower (mechanical) value by the inverse factor 1.01387 (or divide by 0.98632). You can also click the Swap button in the tool above to flip directions in one click.

How many decimal places should I round PS to hp results to?

For everyday comparisons and quick estimates, rounding to 2 decimal places is usually sufficient (for example, 300 PS ≈ 295.90 hp). For engineering, laboratory, or machining specifications, select 4 or 6 decimals—or Scientific (10ⁿ) mode—in the calculator toolbar above.

Metric Horsepower to Horsepower Converter

Enter the power in metric horsepower below to convert it to horsepower.

Horsepower (hp) to Metric Horsepower (hp → PS)

Convert Metric Horsepower to Horsepower (hp)

Enter a value in metric horsepower (PS) to convert to horsepower (hp) (hp).

Value (PS)

From

Result

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295.896021186horsepower (hp)

300 PS = 295.896021186 hp

Result updates automatically

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Suggested Conversions

Reference:NIST SP 811 (NIST SP 811 App. B.9 (Power & Radiant Flux))

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Horsepower to Horsepower Conversion Table

Table showing various horsepower measurements converted to horsepower. Click any preset value or arrow to load it into the converter.

Metric Horsepower (PS)	Horsepower (hp) (hp)
1 PS	0.9863201 hp
2 PS	1.9726401 hp
5 PS	4.9316004 hp
10 PS	9.8632007 hp
15 PS	14.7948011 hp
20 PS	19.7264014 hp
25 PS	24.6580018 hp
30 PS	29.5896021 hp
50 PS	49.3160035 hp
75 PS	73.9740053 hp

How to Convert Metric Horsepower to Horsepower

To convert metric horsepower to horsepower, multiply the power by the following conversion ratio: 0.9863201 horsepower/horsepower.

Since one horsepower is equal to 0.9863201 horsepower, you can use this simple formula to convert:

horsepower = metric horsepower × 0.9863201

The power in horsepower is equal to the power in metric horsepower multiplied by 0.9863201.

For example, here's how to convert 300 metric horsepower to horsepower using the formula above.

horsepower = (300 PS × 0.9863201) = 295.8960212 hp

How Many Horsepower Are in a Horsepower?

There are 0.9863201 horsepower in a horsepower, which is why we use this value in the formula above.

1 PS = 0.9863201 hp|1 hp = 1.0138697 PS

Our horsepower to horsepower calculator automatically converts your power measurements with full decimal and scientific precision across US customary, imperial, and SI metric standards.

Metric Horsepower and horsepower are both units used to measure power. Keep reading to learn more about each unit.

What Is a Horsepower?

A horsepower is a unit of power equal to 735.49875 watts (W), the base unit for power. Metric horsepower (75 kgf·m/s = 735.49875 W). [1]

The horsepower is classified as a metric and SI-compatible unit of power. Metric Horsepower can be abbreviated as PS; for example, 1 horsepower can be written as 1 PS.

When working with metric horsepower (PS) in formulas or technical specifications, always verify whether your target system uses SI metric, US customary, or British imperial standards.

In practice, metric horsepower (PS) are widely used across standard power applications within SI metric workflows, engineering documentation, and technical data sheets.

Learn more about metric horsepower in our Power Converter.

What Is a Horsepower?

A horsepower is a unit of power equal to 745.6998716 watts (W), the base unit for power. Imperial mechanical horsepower (550 ft·lbf/s ≈ 745.7 W). [2]

The horsepower is classified as a US customary and imperial unit of power. Horsepower can be abbreviated as hp; for example, 1 horsepower can be written as 1 hp.

When working with horsepower (hp) in formulas or technical specifications, always verify whether your target system uses SI metric, US customary, or British imperial standards.

In practice, horsepower (hp) are widely used across standard power applications within US customary and imperial workflows, engineering documentation, and technical data sheets.

Learn more about horsepower in our Power Converter.

When converting power between metric horsepower (PS) and horsepower (hp), keep full floating-point precision (1 PS = 0.9863201 hp; 1 hp = 1.0138697 PS) during intermediate calculations and round only the final horsepower figure to match your instrument tolerance.

More Horsepower & Horsepower Conversions

Need to calculate in the opposite direction? Use our horsepower (hp) to metric horsepower converter (hp to PS) to switch your starting unit immediately. You can also explore related tools such as converting watts to horsepower (hp), converting kilowatts to horsepower (hp), or converting metric horsepower to kilowatts.

Convert from Metric Horsepower

Convert to Horsepower

Frequently Asked Questions

There are 0.98632 horsepower (hp) in 1 horsepower (PS). Conversely, 1 horsepower (hp) is equal to 1.01387 metric horsepower (PS).

Power Converter

Quick Info

Direct Factor: 1 horsepower (metric ps) (PS) equals 0.98632 horsepower (hp) (hp).
Inverse Factor: 1 horsepower (mechanical) (hp) equals 1.01387 metric horsepower (PS).
Formula: horsepower (hp) = metric horsepower × 0.98632.
Verified Precision: Anchored to official NIST SP 811 and ISO/IEC 80000 standards.

Units Comparison

Horsepower (Metric PS) (PS)

Metric horsepower (75 kgf·m/s = 735.49875 W).

Horsepower (Mechanical) (hp)

Imperial mechanical horsepower (550 ft·lbf/s ≈ 745.7 W).

Watt (W)

Coherent SI unit of power equal to 1 Joule per second (1 J/s).

References

[1]NIST SP 811 · NIST SP 811 App. B.9 (Power & Radiant Flux)
Source
[2]NIST CUU · Derived SI Unit: Watt (W)
Source
[3]BIPM · SI Brochure (9th Ed.) — Power
Source

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References

NIST · BIPM · ISO

[1]
NIST SP 811 (NIST SP 811 App. B.9 (Power & Radiant Flux))·Power Metrology Standard — Metric Horsepower (PS) to Horsepower (hp) (hp)
NIST SP 811 Standard
[2]
NIST CUU (Derived SI Unit: Watt (W))·Unit Specifications: Horsepower (Metric PS) (PS) & Horsepower (Mechanical) (hp)
NIST CUU Specification
[3]
BIPM (SI Brochure (9th Ed.) — Power)·Conversion Factors & Mathematical Basis (PS to hp)
BIPM Reference

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