Three-Phase Motor Sizing Calculator — Free Online Tool
kW + V + cos φ + efficiency → current + protection
Three-phase motor sizing: rated current from kW, voltage, power factor, efficiency. Plus locked-rotor amps + recommended overload protection.
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Three-Phase Motor Sizing Calculator
Full-load current, locked-rotor amps, recommended overload protection. From kW + voltage + power factor + efficiency. IEC standard sizing.
How to use this tool
- 1
Motor rating
kW + voltage + cos φ + efficiency.
- 2
See full-load current
Plus locked-rotor amps.
- 3
Protection sizing
Overload + short-circuit recommendations.
Frequently Asked Questions
Three-phase current formula?
Locked-rotor (starting) current?
Overload protection setting?
Key Takeaways
- Three-Phase Motor Sizing Calculator is a free, browser-based calculator tool — kw + v + cos φ + efficiency → current + protection.
- No signup, no downloads, no file uploads — your data stays on your device.
- Works on desktop, tablet, and mobile. Install as a PWA for offline access.
How to Use Three-Phase Motor Sizing Calculator
- Open the tool: Launch Three-Phase Motor Sizing Calculator on Toololis — no account or download needed.
- Enter your data: Paste text, enter values, or select a file directly in your browser.
- Get instant results: Everything is processed locally — results appear immediately.
- Copy or download: Save your output or share it. Bookmark for quick access next time.
Three-Phase Motor Sizing Calculator — Quick Facts
- Price
- Free — no limits, no watermarks, no paywalls
- Privacy
- 100% browser-based — no data is sent to any server
- Platform
- Any modern browser on desktop, tablet, or mobile
- Category
- Calculator Tools on Toololis
- Offline
- Works offline after first visit (Progressive Web App)
| Feature | Details |
|---|---|
| Tool | Three-Phase Motor Sizing Calculator |
| Category | Calculator |
| Signup Required | No |
| File Upload | None — processed in browser |
| Mobile Support | Fully responsive |
| Cost | Free forever |
Why Use Three-Phase Motor Sizing Calculator?
You should try Three-Phase Motor Sizing Calculator for a quick, private way to kw + v + cos φ + efficiency → current + protection. All processing happens in your browser. Your files and data never leave your device. According to web.dev, client-side processing is the gold standard for privacy.
On the other hand, dedicated APIs or desktop tools suit batch processing better. They also handle server-side automation. For everyday tasks, browser tools offer the best speed, privacy, and convenience.