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 21–40 of 1,000 ranked alternatives.

  1. Resistor-Converter app icon

    Resistor-Converter

    Gerhard Lentschik

    Calculate resistance from color codes

    Calculate resistance values for 4, 5, or 6 ring resistors by selecting color codes or entering resistance values. Determine colored rings based on resistance input. Support for SMD resistors and EIA value calculations.

    ★ 4.916 ratingsUtilitiesFreeData updated 2026-09-06
  2. Circuit Playground app icon

    Circuit Playground

    Adafruit Industries LLC

    Calculate component values and resistor codes

    Calculate component values for Op Amp, 555, RC Filter, and Resistor Divider circuits. Decode resistor and capacitor codes. Compute power, resistance, current, and voltage using Ohm's Law and Power Calculators.

    ★ 4.319 ratingsUtilities$2.99Data updated 2026-09-08
  3. Electronics Toolkit! app icon

    Electronics Toolkit!

    Electronial

    Calculate resistor values by color

    Toolkit provides resistor calculations based on color codes or SMD values. It includes an LED resistor calculator and parallel resistor tools. Users can reference electronic components and formulas for design and troubleshooting.

    ★ 4.3556 ratingsEducationFreeData updated 2026-09-14
  1. Resistor Color Band Calculator app icon

    Resistor Color Band Calculator

    Aryaman Sharda

    Calculate values by bands

    Determine values by selecting bands. Calculate resistance, tolerance, and temperature coefficients. View detailed specifications and compare ratings.

    ★ 4.625 ratingsUtilitiesFreeData updated 2026-09-06
  2. Electrical Calculator app icon

    Electrical Calculator

    V PUGAZHENTHI

    Calculate values instantly

    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.

    ★ 4.6462 ratingsUtilities$3.99Data updated 2026-09-08
  3. Ultimate Car Audio App app icon

    Ultimate Car Audio App

    Thomas VanSlambrouck

    Wire subwoofers, calculate cone area, suggest amplifier

    Calculate subwoofer voice coil wiring for single, double, and quad configurations. Determine subwoofer cone area. Suggest amplifier power and car electrical system requirements. Include subwoofer box calculators and Ohms Law tools.

    ★ 4.281 ratingsUtilitiesFreeData updated 2026-09-10
  4. OHMs Law Calc app icon

    OHMs Law Calc

    Jonathan Mellen

    Electrical calculations for professionals and students.

    The app calculates single-phase and three-phase electrical values, including power factor and breaker sizing. It offers interactive diagrams and a dashboard for visualizing electrical data.

    ★ 4.03 ratingsReference$1.99Data updated 2026-09-29
  5. Amateur Radio Toolkit app icon

    Amateur Radio Toolkit

    Electronial

    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.

    ★ 4.0367 ratingsEducationFreeData updated 2026-09-14
  6. kVA Calculator app icon

    kVA Calculator

    Pro Certs Software Ltd

    Calculate kVA, kW, and Amps

    Calculate kVA, kW, Amps, Volts, and Power Factor using single or three-phase formulas. Input two values to determine the third. Convert between kVA, kW, and Amps. Supports UPS, generator, and transformer calculations.

    ★ 4.411 ratingsUtilitiesFreeData updated 2026-09-08
  7. Ohm's Law Calculator app icon

    Ohm's Law Calculator

    Phan Nhat Đang

    Calculate voltage, current, resistance, power

    Calculate voltage, current, resistance, and power by entering any two values. Automatically compute the remaining values. Support multiple units including volts, amps, ohms, and watts. Convert between kilo, mega, and milli units.

    ★ 5.02 ratingsUtilitiesFreeData updated 2026-09-27
  8. Electrical Toolkit by HCP app icon

    Electrical Toolkit by HCP

    Codefied Inc.

    Calculate conduit bends and offsets

    Calculate conduit bends with offset and 90-degree tools. Determine stub-ups, kicks, and compound angles. Create three and four-point saddles for obstacle navigation. Access NEC-compliant calculations and field-tested utilities for work.

    ★ 4.741 ratingsUtilitiesFreeData updated 2026-09-06
  9. Ugly's Electrical References app icon

    Ugly's Electrical References

    Informed Publishing

    Access code tables and track updates

    Access code updates for 2023 NEC and NEMA standards. View table changes, formulas, and conduit bending guides with video tutorials. Calculate ampacity and conduit fill. Include transformer data and wiring configurations.

    ★ 4.41,504 ratingsProductivity$12.99Data updated 2026-10-08
  10. Southwire® Voltage Drop Calc app icon

    Southwire® Voltage Drop Calc

    Southwire Company

    Calculate and wire size

    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.

    ★ 4.61,480 ratingsUtilitiesFreeData updated 2026-09-08
  11. DigiKey app icon

    DigiKey

    Digi-Key Corporation

    Order components and view inventory

    Search for electronic components using visual search by uploading a photo. Browse or filter inventory by specifications. View product details, datasheets, photos, and videos. Place orders directly from the .

    ★ 4.73,398 ratingsBusinessFreeData updated 2026-09-08
  12. Ohmulator app icon

    Ohmulator

    Armchair Engineering

    Calculate electric circuits using Ohm's Law.

    The app calculates unknown circuit variables using Ohm's Law. It allows users to adjust unit types for input and output values without prior conversion.

    ★ 0.00 ratingsUtilities$0.99Data updated 2026-09-20
  13. Fraction Calculator Plus app icon

    Fraction Calculator Plus

    Tue Nguyen Minh

    Solve fractions with mixed number input

    Solve math problems with three keypads for easy mixed number input. Calculate multiple fractions simultaneously. Syncs with iOS devices for optimal performance.

    ★ 4.73,986 ratingsUtilitiesFreeData updated 2026-09-14
  14. Resistor Tools app icon

    Resistor Tools

    Siu Yuen Ho

    Calculate values in series or parallel

    Calculate resistance for series or parallel combinations. Determine pairs to achieve a target resistance. Compute R1/R2 ratios and voltage divider values. Calculate values for inverting amplifier gain. Save results as CSV files.

    ★ 5.010 ratingsUtilitiesFreeData updated 2026-09-09
  15. Electronics Engineer Helper app icon

    Electronics Engineer Helper

    Rostyslav Dovhaliuk

    Search datasheets and calculate resistor values

    Datasheet search allows users to find electronic components. Resistor color codes and markings are decoded for 4, 5, and 6 band codes. Electronic symbols are displayed according to IEC 60617, IEEE 315, and GOST standards.

    ★ 4.8435 ratingsProductivityFreeData updated 2026-09-09

How we rank alternatives

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