Electronics & Electrical Calculators
Essential tools for your electronics and electrical projects. From decoding SMD resistors to calculating battery runtime and power conversions, get the accurate answers you need.
Important Safety Warning
The calculators in this category are for educational and informational purposes only. Working with electricity is dangerous. Always turn off power before working on circuits, follow all local electrical codes and safety standards, and consult a qualified electrician for any critical application.
Components & Codes
Quickly identify electronic components with our decoding tools. This section helps you read the values of parts like SMD resistors, saving you time and preventing errors in your projects.
Power, Energy & Backup
Plan your power systems effectively. This calculator helps you estimate the runtime for battery backup systems like a UPS or inverter, so you can size your batteries correctly for your needs.
Power Conversions
Perform essential electrical conversions for AC and DC systems. These tools help you convert between watts, amps, kilowatts (kW), and kilovolt-amps (kVA) while accounting for factors like voltage and power factor.
Installations & Wiring (Advanced)
For more detailed engineering calculations related to electrical installations, please see our dedicated tools in the Science & Engineering category. These calculators provide in-depth analysis for cable sizing, box fill, and maximum demand based on national and international standards.