Watts to PS Converter
Quick answer: To convert watts to PS, multiply by 0.001359622. For example, 10 W is 0.01359622 PS. One watt equals 0.001359622 PS.
- Calculator
- Formula
- Examples
- Size compared
- About the units
- Where used
- Step by step
- Popular conversions
- Reading your result
- Mistakes
- FAQ
- Related tools
- Method
Use the Watts to PS Converter
Watts to PS formula and what each symbol means
PS = W × 0.001359622
| Symbol | Meaning |
|---|---|
| W | Watt |
| PS | Metric horsepower |
Watts to PS examples
1 W
1 W × 0.001359622 = 0.001359622 PS.
10 W
10 W × 0.001359622 = 0.01359622 PS.
100 W
100 W × 0.001359622 = 0.1359622 PS.
Watts compared with PS
One PS is 735.5 times as large as one W, so your number gets smaller when you convert watts to PS and bigger when you convert back. If the answer is not smaller than what you typed, you multiplied instead of dividing.
About watts and PS
Watt (W): The SI unit of power, one joule per second. Metric horsepower (PS): Metric horsepower (Pferdestärke), exactly 735.49875 watts.
Where watts to PS conversions are used
Appliances and chargers list their draw in watts, while air conditioners may quote BTU per hour. Power stations and the grid are described in megawatts and gigawatts.
How to calculate Watts to PS step by step
- Enter the value in W (the starting unit).
- Multiply by 0.001359622, because 1 W = 0.001359622 PS.
- The product is the value in PS. To go back, divide by 0.001359622 or multiply by 735.4988.
Popular power conversions
How to read your Watts to PS result
Quick estimate: multiply by about 0.00136 to get PS from watts; this is within 0.1% of the exact factor. One watt is one joule per second.
| WATTS | PS |
|---|---|
| 1 | 0.001359622 |
| 2 | 0.002719243 |
| 5 | 0.006798108 |
| 10 | 0.01359622 |
| 20 | 0.02719243 |
| 50 | 0.06798108 |
| 100 | 0.1359622 |
| 1,000 | 1.359622 |
PS to Watts: quick table
| PS | WATTS |
|---|---|
| 1 | 735.4987 |
| 5 | 3,677.494 |
| 10 | 7,354.987 |
| 25 | 18,387.47 |
| 50 | 36,774.94 |
| 100 | 73,549.88 |
| 250 | 183,874.7 |
| 500 | 367,749.4 |
Common mistakes when calculating Watts to PS
- Mixing kW (power) with kWh (energy).
- Dividing when you should multiply: from W to PS multiply by 0.001359622; from PS to W divide by 0.001359622.
Watts to PS FAQ
How many PS are in 1 W?
1 W equals 0.001359622 PS.
How many W are in 1 PS?
1 PS equals 735.4988 W.
Is 1 W = 0.001359622 PS an exact conversion?
The factor is shown rounded to 7 significant figures (0.001359622). The calculator above uses more digits.
What is a watt (W)?
The SI unit of power, one joule per second.
How can I estimate watts to PS in my head?
Quick estimate: multiply by about 0.00136 to get PS from watts; this is within 0.1% of the exact factor.
What is 3 W in PS?
3 W = 0.004078865 PS (since 3 × 0.001359622).
What is 30 W in PS?
30 W = 0.04078865 PS (since 30 × 0.001359622).
What is 150 W in PS?
150 W = 0.2039432 PS (since 150 × 0.001359622).
How many decimals should I keep when converting W to PS?
Match the precision of your original measurement. For example, 0.01359622 PS rounds to 0.0136 PS at 3 significant figures; keep more digits only for engineering or scientific work.
More in Power converters
- BTU per Hour to MW Converter
- Watts to Horsepower Converter
- BTU per Hour to PS Converter
- Watts to BTU per Hour Converter
- BTU per Hour to Watts Converter
- Horsepower to BTU per Hour Converter
See all power converters tools · All Conversion calculators · Site map
Method, review and disclaimer
Edited by: Hemant Kumar and Anjita Rai, founders of ToolsVault (SEO and content professional, not a licensed adviser). Method: this tool runs in your browser using the formula shown on this page; the numbers you enter are not sent to our servers. Sources: NIST SP 811, Appendix B.8: conversion factors