Calculate voltage drop for electrical circuits up to 600V. Input custom voltages and system parameters. Output detailed results including conductor size, length, and resistance. Assist in verifying electrical system performance and safety.
by Nebulous LLC★ 5.04 ratingsUtilitiesFreeData updated 2026-09-18
Convert measurements between , , and centimeters. Input fractions or decimals for precise calculations. View results on a visual measure display. Perform addition, subtraction, multiplication, and division with measurement values.
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.
Calculate circuits, convert units, test experiments
Solve electrical problems by calculating voltage, current, and resistance. Input values to determine unknown variables. Perform unit conversions and conduct experiments. Store and retrieve calculation results.
’s provides access to electrical theory topics, including exercises with answers. Features interactive diagrams for hands-on learning. Includes calculators and formulas for electrical calculations. Works offline without ads or subscriptions.
Access electrical wiring diagrams for switches, fans, and outlets. Calculate grounding conductor sizes. View diagrams for 3-way switches, 4-way switching, GFCI, and more. Includes NEC 2014 to NEC 2023 standards.
A calculator with a large, easy-to-read display and simple buttons. Perform addition, subtraction, multiplication, and division. Features a clear layout and user-friendly design for everyday use.
Estimate , stone, rock, sand, topsoil, and aggregate needed for projects. Calculate required amounts in tons, cubic yards, and cubic meters. Input dimensions and material type to get accurate estimates.
Perform basic math operations including addition, subtraction, multiplication, division, and percentage. Store and retrieve calculation results. Customize number, operator, parenthesis, and result colors. Enable touch sound for feedback.
Calculate size based on current, voltage, and temperature. Input circuit parameters to determine AWG rating. Provides resistance and voltage drop calculations. Supports FAA-approved voltages: 14VDC, 28VDC, 115VAC, 200VAC.
Calculate tips and split bills with customizable percentages and group allocations. Enter total amounts and split costs evenly or manually. Round total values for easier handling. Share results via copy or email.
A a log of all calculations. Displays input equations and results clearly. Includes backspace function. Allows adjustable keyboard size and number font size. Supports customization of decimal places, font size for , and display format.
Calculate materials with 10 tools for gravel, soil, mulch, concrete, pavers, retaining walls, grass seed, sod, area, and volume. Input dimensions in inches, feet, yards, centimeters, or meters. Output results in US customary or metric units.
Manage budgets, mortgages, and loans with compound interest and tip calculations. Use speech voice for accessible feedback. Keep equation history, view real-time results, and export data to email or CSV.
Calculate age with detailed breakdowns including months, days, hours, minutes, and seconds lived. Include BMI calculation for health metrics. Input birthdate to generate age statistics and health data.
Perform electrical calculations including wire size, voltage drop, and conduit sizing. Customize material and temperature settings. Access NEC® 2023 tables, FAQs, and searchable articles. Calculate ampacity and use Ohm's Law.
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.
Calculate , topsoil, dirt, or landscaping material needed for projects. Input dimensions for rectangular, circular, or custom areas. Enter measurements in inches, feet, yards, centimeters, or meters.
Monitor battery cell voltages, temperatures, and current flow. Balance cells to equal voltage during charging. Control charge and discharge via signal relays. Supervise the entire battery pack for optimal performance.