Watts to Metric Horsepower Converter
Enter the power in watts below to convert it to metric horsepower.
Convert Watts to Metric Horsepower
Enter a value in watts (W) to convert to metric horsepower (PS).
Watt to Horsepower Conversion Table
Table showing various watt measurements converted to metric horsepower. Click any preset value or arrow to load it into the converter.
| Watts (W) | Metric Horsepower (PS) |
|---|---|
| 1 W | 0.0013596 PS |
| 2 W | 0.0027192 PS |
| 2.5 W | 0.0033991 PS |
| 5 W | 0.0067981 PS |
| 10 W | 0.0135962 PS |
| 15 W | 0.0203943 PS |
| 20 W | 0.0271924 PS |
| 25 W | 0.0339905 PS |
| 30 W | 0.0407886 PS |
| 50 W | 0.0679811 PS |
How to Convert Watts to Metric Horsepower
To convert watts to metric horsepower, multiply the power by the following conversion ratio: 0.0013596 metric horsepower/watt.
Since one watt is equal to 0.0013596 metric horsepower, you can use this simple formula to convert:
The power in metric horsepower is equal to the power in watts multiplied by 0.0013596.
For example, here's how to convert 5 watts to metric horsepower using the formula above.
How Many Metric Horsepower Are in a Watt?
There are 0.0013596 metric horsepower in a watt, which is why we use this value in the formula above.
Our watt to horsepower calculator automatically converts your power measurements with full decimal and scientific precision across US customary, imperial, and SI metric standards.
Watts and metric horsepower are both units used to measure power. Keep reading to learn more about each unit.
What Is a Watt?
Coherent SI unit of power equal to 1 Joule per second (1 J/s). It serves as a primary reference unit for measuring power across scientific and practical applications. [1]
The watt is classified as an International System of Units (SI) unit of power. Watts can be abbreviated as W; for example, 1 watt can be written as 1 W.
As the primary coherent reference unit for power in this category, all other power units are mathematically anchored to the watt (W).
In practice, watts (W) are widely used across standard power applications within International System of Units (SI) workflows, engineering documentation, and technical data sheets.
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). [2]
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.
When converting power between watts (W) and metric horsepower (PS), keep full floating-point precision (1 W = 0.0013596 PS; 1 PS = 735.49875 W) during intermediate calculations and round only the final horsepower figure to match your instrument tolerance.
More Watt & Horsepower Conversions
Need to calculate in the opposite direction? Use our metric horsepower to watts calculator to switch your starting unit immediately. You can also explore related tools such as converting metric horsepower to watts, converting horsepower (hp) to metric horsepower, or converting kilowatts to metric horsepower.
Convert from Watts
Frequently Asked Questions
References
- [1]NIST SP 811 StandardNIST SP 811 (NIST SP 811 App. B.9 (Power & Radiant Flux))·Power Metrology Standard — Watts (W) to Metric Horsepower (PS)
- [2]NIST CUU SpecificationNIST CUU (Derived SI Unit: Watt (W))·Unit Specifications: Watt (W) & Horsepower (Metric PS) (PS)
- [3]BIPM ReferenceBIPM (SI Brochure (9th Ed.) — Power)·Conversion Factors & Mathematical Basis (W to PS)