# Electric Motors Speed Calc — Motor Power Torque & Speed

> Physics calculator for electric motor power, torque, and speed. (iPhone/iPad app by Nitrio.)

- Source: https://appshunter.io/ios/app/electric-motors-speed-calc/id1447766874 (this page in markdown: same URL + `.md`)
- Developer: [Nitrio](https://appshunter.io/developer/321121189)
- Category: Utilities, Productivity
- Price: $2.99
- Rating: 4.00/5 from 8 App Store ratings · 2 written reviews indexed
- Age rating: 4+
- Requires: iOS 13 · 2 MB
- Languages: American English
- Released: 2019-01-06
- Data updated: 2026-08-22
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/electric-motors-speed-calc/id1447766874/reviews.md

## What is Electric Motors Speed Calc?

Electric Motors Power Torque Speed Calculator is a physics/math calculator designed to find electric motor power, torque, or speed quickly and easily.

Features:
- Instant calculation
- Results are copyable to other apps
- Formulas are included as references
- Supports up to 16 decimal places
- Supports various units for each input
- Lightweight app with a small size, optimized for everyday use

The speed for an electric motor in SI units can be calculated as
 n = f x ( 2 / p ) x 60 

The torque for an electric motor in SI units can be calculated as
 T = P x 9.549 / n  

Where:
T = torque (Nm)
P = power (watts)
n = revolution per minute (rpm)
f = frequency of electrical power supply (Hz, cycles/sec, 1/s)
p = number of poles

The speed for an electric motor is determined by the power supply frequency and the number of poles in the motor winding. The torque is the twisting force and is also the driving force of an electric motor. The power produced by the motor depends on the speed of the motor, which is zero at 0% speed and normally at its peak at 100% speed.

On an induction motor, the number of poles determines the speed given the frequency of the power. For example, a 2-pole motor on 60 Hz equals
RPM = 60*(2/2)*60
RPM = 3600 rpm
a 4 pole motor on 60 Hz equal to
RPM = 60*(2/4)*60
RPM = 1800 rpm
For 6 poles, 1200 rpm, and so on.
As speed decreases, the torque increases, so an 8-pole motor has 4x the torque compared to a 2-pole motor with 1/4 the 8-pole motor speed.

*60 Hz is the most common frequency in the US.
*50 Hz is the most common frequency outside the US.

Thanks for your support, and please do visit nitrio.com for more apps for your iOS devices.

## Key features

- Instant calculations
- Copyable results
- Included formulas
- Supports 16 decimal places
- Multiple unit support
- Lightweight and optimized

## Recent user reviews (2 of 2)

All indexed reviews: https://appshunter.io/ios/app/electric-motors-speed-calc/id1447766874/reviews.md

### 5/5 — Great for 3phase motors

*2022-09-13*

Great and simple app for 3-phase motors. I’m looking something similar for 1-phase AC and DC motors, too

### 5/5 — Pretty cool

*2021-01-31*

Nice

## Frequently asked questions about Electric Motors Speed Calc

### What is the price of Electric Motors Speed Calc?

Electric Motors Speed Calc is a paid app priced at $2.99. This one-time purchase grants you full access to all its calculation features.

### Does Electric Motors Speed Calc have ads?

No, Electric Motors Speed Calc is ad-free. You can use all its features without any interruptions from advertisements.

### What devices is Electric Motors Speed Calc compatible with?

Electric Motors Speed Calc is available for iPhone, iPad, and iPod touch devices. It is designed to run on iOS.

### How often is Electric Motors Speed Calc updated?

The app was last updated on January 16, 2026, indicating ongoing support and potential for future improvements. The current version is 1.3.

### What is the age rating for Electric Motors Speed Calc?

Electric Motors Speed Calc has an age rating of 4+. This means it is suitable for users of all ages, with no mature content.

### Can I copy the calculation results from Electric Motors Speed Calc?

Yes, the results from Electric Motors Speed Calc are copyable to other apps. This feature allows for easy integration of your calculations into reports or other documents.

### What is the user sentiment for Electric Motors Speed Calc?

Based on the available data, Electric Motors Speed Calc has a rating of 4.0 stars from 8 ratings. This suggests a generally positive reception from its users.

### Does Electric Motors Speed Calc support different units?

Yes, Electric Motors Speed Calc supports various units for each input. This flexibility allows users to perform calculations using their preferred measurement systems.

## Version history (last 4 releases)

### 1.3 — 2026-01-16

- Updated for the newest devices.
- Minor bugs fixed.

### 1.2 — 2023-12-04

- Updated for the Latest Devices
- Minor Bug Fixes

### 1.1 — 2020-10-16

- Update for Newest Devices
- Bug Fixed

### 1.0 — 2019-01-06

No release notes.

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All apps by Nitrio: https://appshunter.io/developer/321121189

## Related topics

[electric motors speed calc](https://appshunter.io/ios/topics/electric-motors-speed-calc) · [motor electric](https://appshunter.io/ios/topics/motor-electric) · [motor power calculator](https://appshunter.io/ios/topics/motor-power-calculator) · [operational range calculator](https://appshunter.io/ios/topics/operational-range-calculator)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-22.*