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Voltage CalculatorCalculate voltage from current and resistance.Score 72voltageohmscurrentCurrent CalculatorCalculate current from voltage and resistance.Score 72currentohmsvoltageResistance CalculatorCalculate resistance from voltage and current.Score 72resistanceohmsvoltageElectricity Bill CalculatorEstimate electricity bill with usage tiers, fixed fees, and tax.Score 68electricitybillOhm's Law CalculatorCalculate voltage, current, resistance, and power from Ohm's law relationships.Score 58ohmsvoltagecurrentVoltage Drop CalculatorEstimate voltage drop over cable length from current and conductor resistance.Score 48voltagecurrentresistanceElectricity Cost CalculatorEstimate electricity cost from wattage, usage time, and price per kWh.Score 44electricitybillWater Bill CalculatorEstimate water cost from gallons used and rate per thousand gallons.Score 38billSeries Resistance CalculatorCalculate total resistance for resistors in series.Score 38resistanceParallel Resistance CalculatorCalculate total resistance for three resistors in parallel.Score 38resistanceElectricity CO2 CalculatorEstimate electricity-related emissions from kWh and grid factor.Score 38electricityBill Split CalculatorSplit a bill with tip across multiple people.Score 30billCurrent Ratio CalculatorCalculate current ratio from current assets and current liabilities.Score 30currentSplit Bill CalculatorSplit a bill by people, tax, service charge, and custom adjustment.Score 30billElectrical Power CalculatorCalculate electrical power from voltage and current.Score 28voltagecurrentTransformer CalculatorCalculate transformer secondary voltage, current, and turns ratio.Score 28voltagecurrentElectrical Load CalculatorCalculate electrical load from voltage, current, power factor, and quantity.Score 28voltagecurrentTip CalculatorCalculate tip amount and total bill.Score 22billCable Size CalculatorEstimate required cable area from current, allowable density, and safety factor.Score 22currentCapacitance CalculatorCalculate capacitance from charge and voltage.Score 14voltage