Introducing Alva’s Toolbox: Electric Motor Calculators
We are pleased to launch the Alva’s Electric Motor Toolbox, a comprehensive and intuitive set of calculators now available on our website. Whether you’re developing a new electric drivetrain, configuring a motor controller, or analyzing performance data for slotless motors or slotted motors, this tool is designed to support your workflow with clarity, precisely and holistically.
May 22, 2025
.png)
Why and When is Alva’s Electric Motor Toolbox relevant?
Selecting the right motor for the right application requires constant calculations - torque, speed, voltage, angular velocity, current, frequency, and more. Performing these conversions manually can lead to wasted time and increased risk of error. Our Electric Motor Toolbox centralizes these calculations in a single, accessible location. Input any known values and the tool will calculate the missing ones instantly, using industry-standard formulas.
This makes the toolbox especially useful when:
- Comparing performance between motor designs
- Troubleshooting motor or generator behavior
- Optimizing drive settings
- Educating or onboarding new engineers
How Does It Work? Do I Need to be an Engineer?
The toolbox is entirely browser-based - no downloads, no logins, no barriers. Simply select the calculator you need, enter one or two known values, and let the tool provide the results. All calculations follow standard formulas used across electric motor engineering. It is very simple.
Do you have questions about your input data? Reach out to our Applications Engineering team here.
Available Calculators
Torque - Speed - Power
Compute the third value when any two are known. Useful for sizing, load estimation, or efficiency evaluations. Launch this calculator.
Motor Constant (Km)
Calculate the motor constant from torque constant and resistance to understand efficiency. Launch this calculator.
Speed - Voltage - Voltage Constant (Ke)
Calculate how voltage and speed are related via Ke. Launch this calculator.
Torque - Current - Torque Constant
Calculate the torque constant from current and torque. Launch this calculator.
Voltage Constant - Torque Constant - Speed Constant
Determine Ke, Kt, and Kv relationships. Launch this calculator.
RPM - eRPM - Fundamental Frequency
Translate mechanical and electrical speeds based on stator poles. Launch this calculator
RPM - Angular Velocity
Convert between RPM and angular velocity in radians or degrees per second. Launch this calculator
Degrees - Radiants - Micro Radians - Arc Seconds
Convert between angular units for high-precision mechanical calculations. Launch this calculator.
Encoder Bits to Angle
Determine encoder resolution in angular output - useful for feedback system design. Launch this calculator
AWG to mm²
Convert American Wire Gauge sizes to mm² for accurate thermal and electrical modeling. Launch this calculator
Typical Applications
The Electric Motor Toolbox is a practical resource across a range of engineering disciplines:
- Electric motor selection and simulation
- System integration and controller tuning
- Test bench analysis and validation
- Technical education and prototyping
Ready to Get Started?
We designed this toolbox to be a natural companion for anyone working with electric motors - no matter the scale or complexity.
Access the Electric Motor Toolbox here.
If you have feedback, additional calculator requests, or would like help interpreting results for your specific project, contact our technical team here.
Contact
Nicolas Giraudo
Chief Commercial Officer
Fossegrenda 1, 7038 Trondheim, Norway
Our motors
All rights reserved ©2025