One toolkit.
Nine ways in.
Explore an electrical tools mind map: start with a topic, expand its branch and open the calculator, reference or document it leads to.
US (NEC) only — local rules are not covered. A project’s jurisdiction may differ from the current location.
Electrical toolkit
Explore the ideas. Open the right tool.
36 calculators · 6 templates · 55 quick tools · 18 references · 13 connected branchesBasics7 tools
Start with voltage, current, resistance and electrical units.
- Ohm’s law calculatorCalculator
- Current calculatorQuick tool
- Voltage calculatorQuick tool
- Resistance calculatorQuick tool
- Impedance from resistance and reactanceQuick tool
- Joule effect calculatorQuick tool
- Electrical unit converterQuick tool
Conductors12 tools
Connect cable length, area, resistance and temperature to the design checks.
- Voltage drop calculatorCalculator
- Conductor sizing calculatorQuick tool
- Distributed load conductor sizing calculatorQuick tool
- Ampacity calculatorCalculator
- Maximum wire length (voltage drop)Quick tool
- Wire resistance calculatorCalculator
- Cable temperature from resistanceQuick tool
- Power losses in cablesQuick tool
- Voltage drop with distributed loadsQuick tool
- Current carrying capacity of insulated conductorsReference
- Bare and mineral-insulated conductor ampacityReference
- Busbar current carrying capacityReference
Protection13 tools
Understand fault current, disconnection and protective-device data.
- Breaker size calculatorCalculator
- Fuse size calculatorCalculator
- Maximum wire length (short-circuit)Quick tool
- Design current calculatorQuick tool
- Short-circuit current at a pointQuick tool
- Available fault current calculatorCalculator
- Minimum short-circuit currentQuick tool
- Cable protection from short-circuitQuick tool
- Admissible specific energy of cable (k²S²)Quick tool
- Conductor and protective device coordinationReference
- Fuse markings and typesReference
- Atmospheric overvoltage risk assessmentReference
- Protection for emergency lighting linesReference
Motors18 tools
Explore current, efficiency, torque, speed and manufacturer-dependent connections.
- HP to amps calculatorCalculator
- Motor FLA calculatorCalculator
- Motor service factor calculatorCalculator
- Motor current, voltage and power calculatorQuick tool
- Motor power factor calculatorQuick tool
- Motor efficiency calculatorQuick tool
- Single-phase motor run capacitorQuick tool
- Motor synchronous speed calculatorQuick tool
- Motor slip calculatorQuick tool
- Power and motor torque calculatorQuick tool
- Motor full-load current (NEC)Reference
- Motor from three-phase to single-phaseReference
- 3-phase motor wiring (6 terminals)Reference
- 3-phase motor wiring (9 terminals)Reference
- 3-phase motor wiring (12 terminals)Reference
- Motor connections referenceReference
- Motor terminals markingReference
- Insulation class of the motorReference
Power12 tools
Relate active, apparent and reactive power to system capacity.
- Generator sizing calculatorCalculator
- Transformer sizing calculatorCalculator
- Active power calculatorQuick tool
- Apparent power calculatorQuick tool
- Reactive power calculatorQuick tool
- Power factor calculatorQuick tool
- Neutral current calculatorQuick tool
- Power factor correction calculatorQuick tool
- Transformer power factor correction calculatorQuick tool
- Capacitor power at a different voltageQuick tool
- Primary and secondary transformer windingQuick tool
- Electricity cost calculatorQuick tool
Raceway4 tools
Plan physical fill, conduit bends and verified box allowances.
- Conduit fill calculatorCalculator
- Conduit bending calculatorCalculator
- Box fill calculatorCalculator
- Conduit and cable tray sizingReference
Electronics19 tools
Work with component values, dividers, sensors and signals.
- Reactance calculatorQuick tool
- Resistor for LED calculatorQuick tool
- Voltage divider calculatorQuick tool
- Resistor to reduce voltageQuick tool
- Current divider calculatorQuick tool
- Sum of resistors calculatorQuick tool
- Sum of capacitors calculatorQuick tool
- Resonant frequency calculatorQuick tool
- Antenna length calculatorQuick tool
- CCTV hard disk and bandwidth sizingQuick tool
- Analog signal range converterQuick tool
- Zener voltage stabilizer calculatorQuick tool
- Resistor and inductor color code calculatorQuick tool
- Resistor colors from valueQuick tool
- SMD resistor code decoderQuick tool
- Capacitor code decoderQuick tool
- Inductor numeric code decoderQuick tool
- Table of capacitor codesReference
- Temperature sensors (PT/NI/CU, NTC, thermocouples)Reference
Solar4 tools
Estimate battery storage, DC wire area and charging energy.
- Solar wire size calculatorCalculator
- Battery life calculatorQuick tool
- EV charging time calculatorQuick tool
- Solar battery capacity calculatorQuick tool
Converters8 tools
Convert watts, kilowatts, kVA, amps and horsepower at US voltages.
- Watts to amps converterCalculator
- Amps to watts converterCalculator
- kW to amps converterCalculator
- Amps to kW converterCalculator
- kVA to amps converterCalculator
- Amps to kVA converterCalculator
- kVA to kW converterCalculator
- HP to kW converterCalculator
Lighting1 tool
Lay out recessed lighting by the spacing rule and the lumen method.
View lighting in the toolboxWire sizing11 tools
Size wire by ampacity and voltage drop, read the AWG chart and match wire to breakers.
- Wire size calculatorCalculator
- AWG wire gauge chartCalculator
- 20 amp wire sizeCalculator
- 30 amp wire sizeCalculator
- 40 amp wire sizeCalculator
- 50 amp wire sizeCalculator
- 60 amp wire sizeCalculator
- 100 amp wire sizeCalculator
- 150 amp wire sizeCalculator
- 200 amp wire sizeCalculator
- Standard breaker sizesCalculator
Plans & diagrams3 tools
Draw single-line diagrams, wiring diagrams, electrical plans and lighting plans.
View plans & diagrams in the toolboxTemplates3 tools
Turn a verified scope into an estimate, quote, bid or invoice.
- Electrician invoice templateTemplate
- Electrical estimate templateTemplate
- Panel schedule templateTemplate
Select a branch to expand it. Every tool link is available without a sign-up. On a phone, branches stack to fit the screen.
How to use this electrical mind map
Basics introduce the electrical quantities. Conductors, protection and raceway cover distinct cable, device and containment checks. Motors, power, electronics and solar connect those principles to particular systems. Templates organize the commercial documents after the project scope is defined.
Use the search box for a topic or keyword from the supplied tool references. The directory view expands all branches, and the SVG download provides a shareable overview.
Explore relationships in the concept map →