Calculate electrical values using formulas for voltage, current, resistance, power, and more. Determine wire size and voltage drop. Perform transformer and generator calculations. Convert between electrical units.
Provides tools for and electronics calculations. Users can compute resistance, voltage, current, and power. Includes resistor color code conversion and voltage drop calculations aligned with NEC/IEEE standards. Supports USCS and SI units.
Calculate properties using Ohm's Law, current, power, voltage, resistance, and horsepower formulas for DC and AC circuits. Convert units between volts, amps, watts, and ohms. Determine power factor and RMS voltage. Estimate voltage drop in systems.
Convert units across 16 categories with 173 units and 2162 conversions. Perform calculations for field strength, resistance, capacitance, and more. Access 62 calculators via in- purchase.
Calculate for a specific conductor run or determine wire size based on and current carrying capacity. Limits wire size to and NEC ampacity. Supports AWG and KCMIL sizes only.
Convert units across 64 categories with 1333 units and 53742 conversions. Switch between acceleration, angle, area, and other measurements. Find color codes and convert cooking measurements.
Calculate loads, voltage drops, and conductor sizes according to NEC codes. Verify compliance for residential and commercial projects. Access code references for 2002–2023 editions. Perform wire sizing, panel scheduling, and circuit calculations.
A and unit/currency with a clean interface. Convert between 500 units across 29 categories and 161 currencies. Customize colors and display selected units. Enter values to instantly convert between units.
Convert units across 77 categories with over 1000 options. Perform multiple conversions on one screen. Add custom units and categories. Use built-in calculator and numeric keyboard. Convert complex measurements like height and weight between systems.
Convert units across 20 categories with over 400 options, including mixed units like feet and inches. Add widgets for quick access. View conversion history and share results.
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.
Control home temperature settings remotely from any location. Adjust heating and cooling schedules. View energy usage data. Integrate with compatible HVAC systems. Receive installation guidance through in- instructions.
Convert units across , engineering, and everyday categories. Perform calculations with built-in formulas. Save frequently used conversions. Toggle dark mode. Switch between languages. Provide feedback for improvements.
Calculate component values for desired corner frequency, resistance, capacitance, or inductance. Find combinations of resistors, capacitors, and inductors. View detailed calculations and formulas. Export results. Remove ads with PRO version.