MasterElec vs Voltage Calculator

Stop pausing your workflow for manual code lookups. MasterElec is a voice-powered assistant built for electricians that works offline. Access NEC references and professional calculators entirely by voice—no signal required. Voice-First Interface: Ask "What's the ampacity for 3/0 copper?" and get instant answers. 100% Offline: Works in basements, job sites, anywhere—no internet needed. NEC Reference: Grounding, GFCI/AFCI requirements, ampacity tables, and more. Professional Calculators: Voltage Drop, Conduit Fill, Box Fill, and Grounding Sizing. Export Ready: Bookmark sections and export calculations as PDFs. Free users get 5 voice queries/day and basic calculators. Upgrade to Pro for unlimited access. Subscription information Subscription options include weekly and yearly plans and will be charged to your Apple ID account. • Payment will be charged at confirmation of purchase. • Subscriptions automatically renew unless canceled at least 24 hours before the end of the current period. • Renewal will be charged within 24 hours prior to the end of the current period. • You can manage or cancel your subscription in your App Store account settings. • Any unused portion of a free trial period, if offered, will be forfeited upon purchase. Terms of Use: https://www.twoscripts.com/terms-of-use/ Privacy Policy: https://www.twoscripts.com/privacy-policy/ MasterElec is an independent application and is not affiliated with or endorsed by the National Fire Protection Association (NFPA). NEC and National Electrical Code are trademarks of NFPA.

Voltage Calculator is a fast, focused toolbox for everyday electronics work. Three calculators in one clean, dark interface give you instant answers while you type. KEY FEATURES • Series & parallel calculator: combine up to 15 resistors or capacitors and read the result in every common unit • LED series resistor: enter supply voltage, forward voltage and forward current to get the right resistor and its power rating • Built-in reference table of typical LED forward voltages • Voltage divider: calculate the output voltage, or find the missing resistor for a target output • Live circuit diagrams that show your values in place • Results update instantly in multiple units as you type • Available in 24 languages