iPhone & iPad app · Free · Utilities
AC Motors
Winding calculations for motor rewinders.
Enter the nameplate and stator data and get the winding in seconds: turns per coil, wire size, winding factors, flux density, and the checks a rewinder needs before the first coil goes in.
What it does
From nameplate to winding.
Basic winding
From nameplate to winding
Enter power, voltage, frequency, poles, phases and connection, then the stator geometry and the wire you have. Turns per coil, wire sizes and winding factors come back in seconds.
Drawings
Diagrams that follow your inputs
The nameplate, the stator cross-section with its slots and coil pitch, and the conductor cross-section redraw as you type, so what you see on screen is what you will wind.
Checks
Flags before the first coil goes in
Flux density, CMA and airgap flux are compared with the usual bands. Anything out of range is called out with a plain note on what it means for the motor.
Catalogue
Start from a real motor
1,285 motors with their winding data, searchable by manufacturer, horsepower, poles and voltage. Open one and the calculator fills in, so you adjust instead of starting from blank.
History
Every calculation kept
Results save to History and are available on acmotors.app with the same account, so a calculation from the shop floor is waiting on the desktop, where five more calculators pick up from it.
Languages
English and Spanish
The whole app switches between the two, including the drawings and the warnings.
Free to try. Pro when you need it.
Start with 5 free calculations. AC Motors Pro removes the limit and opens the catalogue for $4.99 a month, billed through your Apple account. Cancel anytime from your Apple subscriptions.
- Runs on
- iPhone and iPad, iOS 16.4 or later
- Free tier
- 5 calculations
- Pro
- $4.99 a month through Apple, cancel anytime
- Account
- Required. Create it in the app or on acmotors.app
- On the web
- acmotors.app, six calculators, monthly or yearly
- Privacy
- acmotors.app/legal/privacy
Questions
What does Pro include?
Unlimited calculations and the full catalogue of 1,285 motors. It is a monthly subscription billed by Apple, and you can cancel it from your Apple subscriptions at any time.
Do I need an account?
Yes. Create one in the app or on acmotors.app. It keeps your History and makes the same calculations available in both places. AC Motors has its own privacy policy at acmotors.app/legal/privacy.
How is the app different from acmotors.app?
The app has the Basic winding calculator and the catalogue. The web app at acmotors.app is the fuller product, with six calculators covering winding design, wire sizing, slot analysis, equivalent circuit, performance and rotor diagnostics, on monthly or yearly plans. Sign in with the same account and your History is in both.
I used my 5 free calculations.
AC Motors Pro removes the limit and opens the catalogue for $4.99 a month, billed by Apple. Manage or cancel it from your Apple subscriptions.
