https://elec.webpenson.com/en/categories/electrical-calculators/ Recent content in Electrical Calculators on Electrical Toolbox Hugo en-US https://elec.webpenson.com/en/tools/electricity-cost-calculator/ Mon, 01 Jan 0001 00:00:00 +0000 https://elec.webpenson.com/en/tools/electricity-cost-calculator/ Free online electricity cost estimator. Enter appliance wattage W and daily usage hours (or monthly kWh) plus electricity rate ¥/kWh to calculate daily/monthly/annual costs. Includes presets for LED lights, refrigerators, air conditioners, and water heaters. Assists with household energy savings. https://elec.webpenson.com/en/tools/charging-power-calculator/ Mon, 01 Jan 0001 00:00:00 +0000 https://elec.webpenson.com/en/tools/charging-power-calculator/ Free online EV charger power calculator. Enter voltage V, current A, and power factor cosΦ to calculate active power kW, reactive power kVar, and apparent power kVA. Supports single-phase 220V and three-phase 380V, assisting with charger sizing. https://elec.webpenson.com/en/tools/three-phase-power-calculator/ Mon, 01 Jan 0001 00:00:00 +0000 https://elec.webpenson.com/en/tools/three-phase-power-calculator/ Online three-phase power and power factor calculator. Enter line voltage V, line current A, and power factor cosφ to calculate active power P(kW), apparent power S(kVA), and reactive power Q(kvar). Supports unit switching (W↔kW, VAr↔kVAr) and recommends reactive power compensation capacitors to correct to 0.95. For factory distribution, motor sizing, transformer capacity verification, and reactive power penalty calculations.