Everyday · Engineering & Electrical
Engineering & Electrical calculators
Ohm's law, voltage drop, resistor codes, energy cost, bandwidth and subnets.
Ohm's Law CalculatorSolve for voltage, current, resistance and power from any two values.Voltage Drop CalculatorVoltage drop along a wire run from current, length and conductor size.Resistor Color Code CalculatorDecode a 4-band resistor's value and tolerance from its colors.Electricity Cost CalculatorEnergy use and running cost of an appliance over time.Bandwidth CalculatorDownload/upload time for a file at a given connection speed.IP Subnet CalculatorNetwork, broadcast, mask and host range for an IPv4 address and CIDR.