Science & Tech Calculators
Chemistry, electrical, networking and PC-building calculators.
Molecular Weight CalculatorMolar mass of a chemical formula.Molarity CalculatorMolarity of a solution from mass and volume.Dilution CalculatorFinal volume for diluting a solution (C1V1 = C2V2).Density CalculatorDensity from mass and volume.Ohm's Law CalculatorVoltage, current, resistance and power. Enter any two.Voltage Drop CalculatorVoltage drop along a cable run.Watts to Amps CalculatorConvert watts to amps for single or three phase.kVA CalculatorConvert kW to kVA and size a generator or inverter.Power Consumption CalculatorUnits used and running cost of an appliance.Solar Panel CalculatorSolar system size and number of panels you may need.Subnet & CIDR CalculatorNetwork, broadcast and host range for an IPv4 subnet.PSU Wattage CalculatorPower supply size for a PC build.Dew Point CalculatorDew point from temperature and humidity.Humidity CalculatorRelative humidity from temperature and dew point.