--- title: "Electrical & Engineering Calculators | XTRAW Tools" description: "Electrical and engineering calculators for voltage, current, resistance, power, voltage drop, wire size, LEDs, capacitors, batteries, and solar planning." url: "https://xtraw.com/tools/calculators/science-calculators/electrical-engineering-calculators" date: "2026-08-21T00:52:31+00:00" language: "en-GB" --- ## [ Electrical Calculators ![Electrical Calculators category image](https://xtraw.com/images/virtuemart/category/171_electrical-calculators.jpg) ](https://xtraw.com/tools/calculators/science-calculators/electrical-engineering-calculators/electrical-calculators "Electrical Calculators") ## [ Solar Calculators ![Solar Calculators category image](https://xtraw.com/images/virtuemart/category/172_solar-calculators.jpg) ](https://xtraw.com/tools/calculators/science-calculators/electrical-engineering-calculators/solar-calculators "Solar Calculators") Sort by [Sorted Product Name +/-](https://xtraw.com/tools/calculators/science-calculators/electrical-engineering-calculators/dirDesc " +/-") [Product Name](https://xtraw.com/tools/calculators/science-calculators/electrical-engineering-calculators/by,product_name "Product Name") [Ordering](https://xtraw.com/tools/calculators/science-calculators/electrical-engineering-calculators/by,ordering "Ordering") Results 1 - 7 of 7 24 # Electrical & Engineering Calculators #### Latest Tools [ ![Solar Panel Calculator from XTRAW Tools](https://xtraw.com/images/virtuemart/product/resized/xtraw-solar-panel-calculator-360x360_230x230.jpg) ](https://xtraw.com/tools/calculators/science-calculators/electrical-engineering-calculators/solar-panel-calculator "Solar Panel Calculator") popular ## [Solar Panel Calculator](https://xtraw.com/index.php?option=com_virtuemart&view=productdetails&virtuemart_product_id=2173&virtuemart_category_id=170&Itemid=173) Estimate solar panel system size needed from electricity ... Be the first to review product [ ![Capacitor Calculator from XTRAW Tools](https://xtraw.com/images/virtuemart/product/resized/xtraw-capacitor-calculator-360x360_230x230.jpg) ](https://xtraw.com/tools/calculators/science-calculators/electrical-engineering-calculators/capacitor-calculator "Capacitor Calculator") new ## [Capacitor Calculator](https://xtraw.com/index.php?option=com_virtuemart&view=productdetails&virtuemart_product_id=2172&virtuemart_category_id=170&Itemid=173) Calculate capacitor charge, energy, and RC time constant. ... Be the first to review product [ ![LED Resistor Calculator from XTRAW Tools](https://xtraw.com/images/virtuemart/product/resized/xtraw-led-resistor-calculator-360x360_230x230.jpg) ](https://xtraw.com/tools/calculators/science-calculators/electrical-engineering-calculators/led-resistor-calculator "LED Resistor Calculator") new ## [LED Resistor Calculator](https://xtraw.com/index.php?option=com_virtuemart&view=productdetails&virtuemart_product_id=2171&virtuemart_category_id=170&Itemid=173) Calculate the resistor needed for an LED circuit. Use this ... Be the first to review product #### Products [ ![kVA Calculator from XTRAW Tools](https://xtraw.com/images/virtuemart/product/resized/xtraw-kva-calculator-360x360_230x230.jpg) ](https://xtraw.com/tools/calculators/science-calculators/electrical-engineering-calculators/kva-calculator "kVA Calculator") new ## [kVA Calculator](https://xtraw.com/index.php?option=com_virtuemart&view=productdetails&virtuemart_product_id=2169&virtuemart_category_id=170&Itemid=173) Calculate kilovolt-amps from kilowatts and power factor. ... Be the first to review product [ ![Ohm's Law Calculator from XTRAW Tools](https://xtraw.com/images/virtuemart/product/resized/xtraw-ohms-law-calculator-360x360_230x230.jpg) ](https://xtraw.com/tools/calculators/science-calculators/electrical-engineering-calculators/ohms-law-calculator "Ohm's Law Calculator") popular ## [Ohm's Law Calculator](https://xtraw.com/index.php?option=com_virtuemart&view=productdetails&virtuemart_product_id=2164&virtuemart_category_id=170&Itemid=173) Calculate voltage, current, resistance, or power using ... Be the first to review product [ ![Voltage Drop Calculator from XTRAW Tools](https://xtraw.com/images/virtuemart/product/resized/xtraw-voltage-drop-calculator-360x360_230x230.jpg) ](https://xtraw.com/tools/calculators/science-calculators/electrical-engineering-calculators/voltage-drop-calculator "Voltage Drop Calculator") new ## [Voltage Drop Calculator](https://xtraw.com/index.php?option=com_virtuemart&view=productdetails&virtuemart_product_id=2165&virtuemart_category_id=170&Itemid=173) Calculate voltage drop in electrical wiring. Use this free ... Be the first to review product [ ![Watts to Amps Calculator from XTRAW Tools](https://xtraw.com/images/virtuemart/product/resized/xtraw-watts-to-amps-calculator-360x360_230x230.jpg) ](https://xtraw.com/tools/calculators/science-calculators/electrical-engineering-calculators/watts-to-amps-calculator "Watts to Amps Calculator") popular ## [Watts to Amps Calculator](https://xtraw.com/index.php?option=com_virtuemart&view=productdetails&virtuemart_product_id=2166&virtuemart_category_id=170&Itemid=173) Convert watts to amps and estimate current from voltage and ... Be the first to review product [ ![Wire Size Calculator from XTRAW Tools](https://xtraw.com/images/virtuemart/product/resized/xtraw-wire-size-calculator-360x360_230x230.jpg) ](https://xtraw.com/tools/calculators/science-calculators/electrical-engineering-calculators/wire-size-calculator "Wire Size Calculator") popular ## [Wire Size Calculator](https://xtraw.com/index.php?option=com_virtuemart&view=productdetails&virtuemart_product_id=2170&virtuemart_category_id=170&Itemid=173) Determine a wire gauge estimate from current, distance, ... Be the first to review product [ ![Electricity Cost Calculator from XTRAW Tools](https://xtraw.com/images/virtuemart/product/resized/xtraw-electricity-cost-calculator-360x360_230x230.jpg) ](https://xtraw.com/tools/calculators/science-calculators/electrical-engineering-calculators/electricity-cost-calculator "Electricity Cost Calculator") popular ## [Electricity Cost Calculator](https://xtraw.com/index.php?option=com_virtuemart&view=productdetails&virtuemart_product_id=2168&virtuemart_category_id=170&Itemid=173) Calculate the cost of running an appliance from watts, ... Be the first to review product [ ![kW to kWh Calculator from XTRAW Tools](https://xtraw.com/images/virtuemart/product/resized/xtraw-kw-to-kwh-calculator-360x360_230x230.jpg) ](https://xtraw.com/tools/calculators/science-calculators/electrical-engineering-calculators/kw-to-kwh-calculator "kW to kWh Calculator") popular ## [kW to kWh Calculator](https://xtraw.com/index.php?option=com_virtuemart&view=productdetails&virtuemart_product_id=2167&virtuemart_category_id=170&Itemid=173) Convert kilowatts to kilowatt-hours and estimate energy ... 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