60+ electrical calculators in one app — Ohm's law, voltage drop, wire sizing, transformers & more. Built for electricians, engineers and students.
Electrical Calculator is your all-in-one app for fast, accurate, and essential electrical calculations. Packed with 60+ powerful tools, it's designed for electricians, electrical & electronics engineers, and students. Every calculator includes built-in formulas and supports both USCS and SI units.
What's New:
• Category filters — find any calculator in seconds with purpose-based groups: Ohm's Law, Wiring & NEC, Power & Phase, Motors, Transformers and more
• Refreshed design with a cleaner look
Core Calculators:
• Voltage, Current, Resistance & Power (Ohm's Law)
• kVA to Amps / Amps to kVA (Single & Three Phase)
Electrical System Calculators:
• Voltage Drop Calculator (per NEC/IEEE standards)
• Wire Size Calculations (AWG & mm²)
• Power, Current & Horsepower (DC, Single & Three Phase)
• Efficiency & Power Factor Calculators
• Neutral Current (3-Phase Unbalanced Loads)
Transformers & Generators:
• Transformer Current, Voltage & Resistance Imbalance
• DC Generator
Reactance & Impedance:
• Inductive & Capacitive Reactance
• Resonant Frequency
• Characteristic Impedance (Parallel & Coaxial)
• Impedance Calculators (R-L-C combinations)
Series / Parallel Calculations:
• Resistance, Inductance & Capacitance (Series & Parallel)
• Unknown Resistance & Capacitance (Series & Parallel)
Components:
• Resistor Color Code — resistance to color bands and back
• Inductor & Capacitor Sizing Formulas
Lighting & Energy Tools:
• Luminous Intensity, Luminous Flux & Solid Angle
• Energy Cost Calculator
• Energy Stored in Resistors, Inductors & Capacitors
Conversions:
• Star ↔ Delta Conversion
• Field Strength & Electrical Potential
• Resistance, Resistivity, Conductance & Conductivity
• Capacitance, Inductance & Charge Density Converters
• Power Converter
Key Features:
• Category filters for fast navigation
• Flexible unit selection for inputs and outputs
• Full iPad support with split view
• Dark Mode and 12 languages
• Clean interface for the field, the shop, and the classroom
If your a professional in any electro-mechanical profession. You need to learn to use it. It is required. Use it or be left behind. As it should be. Thank you.
Love it
Ermer1968
Works great
No impedance calculators
mdeebeth
Am I blind or is there not a single impedance calculator in the bunch? The other calculators are great but I can’t give this app 5 stars without there being any impedance calculators on here.
Developer Response
Hi,Thanks for writing to us, we will try to include impedance calculations in the next update.with regardsV Pugazhenthi
App
Jimerator
Very good easy app
• Find calculators faster — new category chips group all 60+ calculators by purpose
• Bug fixes and improvements
Version 11.2
The developer, V PUGAZHENTHI, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Privacy practices may vary, for example, based on the features you use or your age. Learn More
The developer indicated that this app supports the following accessibility features. Learn More