VoltTool Electrical Calc

DHG DevTools

About this app

Built by electricians, for electricians.
VoltTool is the electrical calculation tool designed for real job sites: basements, construction sites, and anywhere with no signal.
No internet. No account.
Calculate in seconds what you need on the job: current, cable section, power and voltage drop — based on real standards, with clear results.
Features:
• Current (amperage) from power or cable section
• Recommended cable section according to standard
• Active and apparent power with power factor (cos φ)
• Voltage drop with normative limits
• Standards: VDE (Germany), IRAM (Argentina), UNE (Spain), UNIT (Uruguay)
• Single-phase and three-phase voltage
• Built-in flashlight for low-light environments
• Available in English, Spanish and German
Built for real work:
Clean interface, fast input, instant results. No login, no extra steps, no connection required.
VoltTool is for electricians, electrical technicians and installers who need reliable answers when there's no time to waste.

What’s new

- Web version available at volttool.web.app
- Solar: panels by consumption and expert calculator (off-grid)
- Installation methods by standard (VDE, REBT, IRAM) in all calculations
- Scrollable forms when rotating the device
- Bugs or suggestions? Contact us directly from the app