Wire Gauge & Size Calculator
AWG & mm² · Voltage Drop, Amps
Free · Designed for iPad. Not verified for macOS.
Wire Gauge Calculator
Find the minimum safe wire size in seconds. Enter voltage (V), current (A), run length (ft/m), and allowable voltage drop (%) — the app returns the smallest conductor that satisfies both voltage drop and ampacity, and shows you which one set the size.
New in this version
• IEC (mm²) sizing — now alongside NEC (AWG/kcmil); switch standards in one tap
• Ampacity check — sizes by current-carrying capacity, not just voltage drop
• More accurate AC — power factor, conductor temperature, and reactance
• Continuous load (125%), insulation rating, and installation-method options
Features
• Results in AWG/kcmil, inch, mm, and sq.mm at a glance
• Conductor materials: Copper, Aluminum & Steel
• Multiple parallel conductors per phase
• DC, AC single-phase, and three-phase (3- & 4-wire)
• Quick-pick common supply voltages + shareable results
Perfect for
• Low-voltage DC — automotive, RV, solar
• Residential AC — single-phase 120 V / 230 V
• Industrial three-phase — 480 V (US) / 400 V (EU)
• Long-distance power runs
Always verify results against your local electrical code.
Ratings & Reviews
Now with IEC (mm²) sizing!
• NEC (AWG/kcmil) + IEC (mm²) — switch standards in one tap
• Smarter engine — sizes by voltage drop and ampacity, shows which governs
• Accurate AC: power factor, temperature & reactance
The developer, V PUGAZHENTHI, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Used to Track You
The following data may be used to track you across apps and websites owned by other companies:
- Location
- Identifiers
- Usage Data
Data Linked to You
The following data may be collected and linked to your identity:
- Location
- Identifiers
- Usage Data
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Diagnostics
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Provider
- V PUGAZHENTHI
- Size
- 40.1 MB
- Category
- Utilities
- Compatibility
Requires iOS 17.6 or later.
- iPhone
Requires iOS 17.6 or later. - iPad
Requires iPadOS 17.6 or later. - Mac
Requires macOS 14.6 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.3 or later.
- iPhone
- Languages
English and 9 more
- English, Dutch, French, German, Italian, Portuguese, Russian, Simplified Chinese, Spanish, Ukrainian
- Age Rating
4+
- 4+
- Contains
Advertising
- Copyright
- © All Rights Reserved