Ohms Law app icon

Apps Like Ohms Law for iPhone and iPad

Calculate power, current, resistance, voltage.

The app calculates voltage, current, resistance, and power. Users input any two values to determine the remaining two using Ohm's Law formulas.

by Pro Certs Software Ltd★ 4.37 ratingsUtilitiesFreeData updated 2026-10-08

Ohms Law screenshots

Ranked alternatives

Showing 1–20 of 1,000 ranked alternatives.

  1. The Ohms Law Calculator app icon

    The Ohms Law Calculator

    Adam Wilkie

    Calculate power, voltage, resistance, current

    Calculate power, voltage, resistance, and current using Ohm's Law. Enter any two values to instantly receive all results. Switch between Watts, kiloWatts, and MegaWatts. Clear fields with a button. Share results via built-in sharing.

    ★ 0.00 ratingsUtilities$0.99Data updated 2026-09-06
  2. Ohms Law Calc. app icon

    Ohms Law Calc.

    V PUGAZHENTHI

    Calculate voltage, current, and resistance

    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.

    ★ 4.71,326 ratingsUtilitiesFreeData updated 2026-09-08
  3. Ohmulator app icon

    Ohmulator

    Armchair Engineering

    Calculate voltage, current, and resistance

    Calculate electrical circuit values by entering two known variables (current, resistance, voltage, or power). Adjust units dynamically for accurate results. Display total resistance and power in the circuit.

    ★ 4.779 ratingsUtilities$0.99Data updated 2026-09-08
  1. Electrical Calc Elite app icon

    Electrical Calc Elite

    Cyberprodigy LLC

    Calculate loads and circuits

    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.

    ★ 4.8126 ratingsUtilities$19.99Data updated 2026-09-08
  2. Ohm's Law & Power Law Calculator app icon

    Ohm's Law & Power Law Calculator

    Cressall Resistors Ltd

    Calculate electrical laws and relationships.

    The app calculates Ohm's law and power law relationships. Users can fix two electrical parameters to calculate the other two, allowing for rapid "what-if" recalculations.

    ★ 4.427 ratingsUtilitiesFreeData updated 2026-10-08
  3. Electric circuit calculator app icon

    Electric circuit calculator

    Kantaben Gorasiya

    Calculate current, voltage, resistance, and more

    Calculate current in parallel circuits, voltage in series circuits, and resistance in both series and parallel configurations. Use Ohm's Law, DC calculations, and LR filter tools.

    ★ 4.19 ratingsProductivityFreeData updated 2026-09-06
  4. Watts Amps Volts  Calculator app icon

    Watts Amps Volts Calculator

    Pro Certs Software Ltd

    Calculate , , and

    Calculate electrical power for single phase systems by converting between , , and . Input values to solve for unknowns. Support for three phase calculations including kilowatts, , , and power factor.

    ★ 4.450 ratingsUtilitiesFreeData updated 2026-09-08
  5. Ohm & Watt Law Electrical Calc app icon

    Ohm & Watt Law Electrical Calc

    TrothMatrix OPC Private Limited

    Calculate voltage, current, resistance, and power

    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.

    ★ 4.752 ratingsUtilitiesFreeData updated 2026-09-17
  6. OhmPro app icon

    OhmPro

    SAM SHEPPARD

    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.

    ★ 0.00 ratingsProductivityFreeData updated 2026-09-06
  7. Electric Toolkit - Calculator app icon

    Electric Toolkit - Calculator

    Cyberprodigy LLC

    Wire diagrams, pinouts, calculate electricity

    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.

    ★ 4.8289 ratingsUtilities$5.99Data updated 2026-09-08
  8. Ohm Law Calculator app icon

    Ohm Law Calculator

    Tan Chia Ling

    Calculate Ohm's Law electrical factors easily.

    The app calculates current, voltage, resistance, and power using Ohm's Law. Users input two known values, and the app automatically computes the required factor.

    ★ 3.54 ratingsUtilities$2.99Data updated 2026-09-27
  9. Electrical Calculator lite app icon

    Electrical Calculator lite

    V PUGAZHENTHI

    Calculate voltage, current, and resistance

    Calculate values using resistor color codes, voltage, current, and resistance formulas. Perform impedance and RLC circuit analysis. Input values to get accurate results for engineering, wiring, and circuit design tasks.

    ★ 4.6575 ratingsUtilitiesFreeData updated 2026-09-09
  10. ElectriCalc Pro app icon

    ElectriCalc Pro

    Calculated Industries, Inc.

    Calculate and document electrical work safely

    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.

    ★ 4.9357 ratingsUtilitiesFreeData updated 2026-09-08
  11. Electrical Calculator Plus app icon

    Electrical Calculator Plus

    Calc Hub, LLC

    Calculate voltage, current, and power

    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.

    ★ 4.625 ratingsUtilitiesFreeData updated 2026-09-06
  12. Elec Series & Parallel Calc. app icon

    Elec Series & Parallel Calc.

    V PUGAZHENTHI

    Calculate electrical series and parallel circuits.

    The app calculates resistance, capacitance, and inductance in series and parallel circuits. It supports various units for each electrical property and performs calculations automatically when input values or units change.

    ★ 4.89 ratingsUtilities$0.99Data updated 2026-09-28
  13. Basic Electronic Calculator app icon

    Basic Electronic Calculator

    Gergely Nagy

    Calculate voltage, current, resistance, and power

    Calculate voltage, current, resistance, or electric power by entering any two values. Convert results between normal and scientific notation. Display calculated values clearly.

    ★ 3.52 ratingsUtilitiesFreeData updated 2026-09-08

How we rank alternatives

Apps are ranked by functional similarity, category fit, rating confidence, and popularity.