Calculate voltage, current, and resistance
Calculate electrical values using Ohm’s Law and related formulas. Input voltage, current, or resistance to determine missing variables. Access circuit diagrams and safety guidelines. Convert units between volts, amps, and ohms.
Showing 21–40 of 1,000 ranked alternatives.
Ashvin Kevadiya
Learn circuits, design wiring, and test systems
Learn theory with interactive lessons on voltage, current, resistance, and Ohm’s law. Explore detailed wiring diagrams and circuit schematics. Use built-in to calculate loads, analyze circuits, and simulate real-world wiring scenarios.
Prysmian S.p.A.
Calculate and conductor size
Calculate to determine maximum circuit distance and minimum conductor size. Input parameters to find required conductor size, actual loss, maximum allowable loss, and maximum amps. Use NEC® table T310.15 (B) (16) 75°C ratings for amperage values.
Tim O's Studios, LLC
Calculate with large buttons and clear display
A calculator with large buttons and a clear display for efficient calculations. Supports basic arithmetic operations. Includes a Retina Display for improved visibility.
PawEng, LLC
Answer daily questions and track your progress
Test knowledge of codes with daily quiz questions. Answer individual questions or complete as many as possible in one session. Includes 366 basic electrician-written questions for apprentices, journeymen, and masters.
Logan Cox
Troubleshoot circuits and size wires
Provides electrical calculations and references for wire sizing, circuit troubleshooting, and NEC code lookups. Users can ask specific questions, receive instant answers, and access code references.
Digi-Key Corporation
Order components and view inventory
Search for electronic components using visual search by uploading a photo. Browse or filter inventory by specifications. View product details, datasheets, photos, and videos. Place orders directly from the .
Pro Certs Software Ltd
Access charts and
Access charts, tables, and calculators for quick . View and fill out forms, review technical guides, and check product safety recalls. Look up cable ratings and other industry-specific data instantly.
Electronial
Calculate coordinates and grid squares for projects
Offers calculators for designing radios and antennas. Users can find latitude and longitude from a maidenhead square or vice versa. Calculate distances between squares. Convert units. Locate current position.
Sam Virgillo
Calculate voltage, current, and power
Calculate voltage, current, and power in 3-phase delta and wye circuits. Determine conductor ampacity using NEC and CEC tables. Compute voltage drop based on length, size, current, and temperature.
Electronial
Calculate resistor values by color
Toolkit provides resistor calculations based on color codes or SMD values. It includes an LED resistor calculator and parallel resistor tools. Users can reference electronic components and formulas for design and troubleshooting.
Bonsaisoft LLC
- circuits by country
Select a country to view accurate codes specific to its electrical standards. Identify circuit colors for safe wiring. Access detailed guidelines for international compliance. Save and share configurations for future reference.
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