Perform electrical calculations for contractors, designers, and electricians. Calculate load, voltage drop, conduit fill, and panel sizing. Verify compliance with NEC® codes from 1996 to 2023. Store and retrieve past calculations.
Provides tools for calculations and theory. Users can explore Ohm's Law and resistor calculations. Access theoretical concepts in Basic Knowledge and practical exercises in and Advanced sections.
Calculate parameters based on run or total run input. Support multiple units for measurements. Determine maximum and minimum step sets. Copy results to clipboard. Access all features with unlimited subscription.
Calculate Voltage, Current, Resistance, and Power using Ohm’s Law and ’s Law. Input values to solve for unknowns. Display results instantly. Includes formulas for calculations. Supports both direct and indirect circuit analysis.
Allows users to calculate resistor values using color codes and SMD codes. It includes tools for Ohm's Law, reactance, resonance, and voltage dividers. Users can determine resistor ratios, series/parallel combinations, and LED resistor needs.
The app calculates electronic components for speaker system filters. It designs circuits for various speaker types and displays frequency and phase diagrams.
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.
Create legends with customizable color labels for phases, tandem breakers, and 3-pole breakers. Adjust legend size for printing on sleeves or door tape. Export as needed.
Convert units across 8 including length, weight, thermal resistance, and magnetism. Switch between metric and imperial systems. Save frequently used conversions. Export results as text or image.
Calculate arc dimensions including radius, length, width, height, apothem, angle, and area. Input any two values to derive the rest. Useful for carpenters, architects, and engineers. Supports complex mathematical calculations.
Calculate lengths, angles, and area of shapes. Select a shape from a list. Input values into text boxes linked to orange points. Adjust point positions using the NEXT button or tapping points.
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.