Horsepower to PS Converter
Quick answer: To convert horsepower to PS, multiply by 1.01387. For example, 10 hp is 10.1387 PS. One horsepower equals 1.01387 PS.
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Use the Horsepower to PS Converter
Horsepower to PS formula and what each symbol means
PS = hp × 1.01387
| Symbol | Meaning |
|---|---|
| hp | Horsepower |
| PS | Metric horsepower |
Horsepower to PS examples
1 hp
1 hp × 1.01387 = 1.01387 PS.
10 hp
10 hp × 1.01387 = 10.1387 PS.
100 hp
100 hp × 1.01387 = 101.387 PS.
Horsepower compared with PS
One hp is 1.014 times as large as one PS, so your number gets bigger when you convert horsepower to PS and smaller when you convert back. If the answer is not larger than what you typed, you divided instead of multiplying.
About horsepower and PS
Horsepower (hp): Mechanical horsepower, about 745.7 watts. Metric horsepower (PS): Metric horsepower (Pferdestärke), exactly 735.49875 watts.
Where horsepower 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 Horsepower to PS step by step
- Enter the value in hp (the starting unit).
- Multiply by 1.01387, because 1 hp = 1.01387 PS.
- The product is the value in PS. To go back, divide by 1.01387 or multiply by 0.9863201.
Popular power conversions
How to read your Horsepower to PS result
One watt is one joule per second.
| HORSEPOWER | PS |
|---|---|
| 1 | 1.01387 |
| 2 | 2.027739 |
| 5 | 5.069348 |
| 10 | 10.1387 |
| 20 | 20.27739 |
| 50 | 50.69348 |
| 100 | 101.387 |
| 1,000 | 1,013.87 |
PS to Horsepower: quick table
| PS | HORSEPOWER |
|---|---|
| 1 | 0.9863201 |
| 5 | 4.9316 |
| 10 | 9.863201 |
| 25 | 24.658 |
| 50 | 49.316 |
| 100 | 98.63201 |
| 250 | 246.58 |
| 500 | 493.16 |
Common mistakes when calculating Horsepower to PS
- Mixing kW (power) with kWh (energy).
- Dividing when you should multiply: from hp to PS multiply by 1.01387; from PS to hp divide by 1.01387.
Horsepower to PS FAQ
How many PS are in 1 hp?
1 hp equals 1.01387 PS.
How many hp are in 1 PS?
1 PS equals 0.9863201 hp.
Is 1 hp = 1.01387 PS an exact conversion?
The factor is shown rounded to 7 significant figures (1.01387). The calculator above uses more digits.
What is a metric horsepower (PS)?
Metric horsepower (Pferdestärke), exactly 735.49875 watts.
How can I estimate horsepower to PS in my head?
One hp is 1.014 times as large as one PS, so your number gets bigger when you convert horsepower to PS and smaller when you convert back. If the answer is not larger than what you typed, you divided instead of multiplying.
What is 0.5 hp in PS?
0.5 hp = 0.5069348 PS (since 0.5 × 1.01387).
What is 25 hp in PS?
25 hp = 25.34674 PS (since 25 × 1.01387).
What is 80 hp in PS?
80 hp = 81.10957 PS (since 80 × 1.01387).
How many decimals should I keep when converting hp to PS?
Match the precision of your original measurement. For example, 10.1387 PS rounds to 10.1 PS at 3 significant figures; keep more digits only for engineering or scientific work.
More in Power converters
- kW to Horsepower Converter
- Horsepower to BTU per Hour Converter
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- BTU per Hour to Watts Converter
- kW to PS Converter
- BTU per Hour to PS Converter
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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