Electrical Engineering Calculators


		your source for online planning, calculating and decision-making
	Home \| Plan \| Calculate \| Convert \| Decide

Engineering

Aeronautical
Civil
Chemical
Electrical
Industrial
Mechanical

Electrical Engineering Calculators

Basic Formulas

Ohm's Law Calc -- Calculate watts, amps, volts or ohms. Enter any two values and calculate the third.
Ohm's Law Simulator -- Discover Ohm's Law by changing voltage, current and resistance to get a working ciruit.
Voltage-Current-Resistance-Power Calculator -- Enter two values (volts, amps, ohms or watts) and calculate the other two.
Capacitance-Frequency-Inductance Calculator -- Enter two values (capacitance, frequency or inductance) and calculate the third.
Resistance-Frequency-Capacitance Calculator -- Enter two values (resistance, frequency or capacitance) and calculate the third.
Voltage Drop Calculator -- "This Calculator will determine the minimum size conductor needed based on a 3% Voltage Drop. It does not take into consideration other factors such as minimum ampacity based on the National Electric Code Table 310-16."

Conductors, Resistors, Capacitors, PCB's

Wire Parameter Calculator -- Enter AWG, temperature and number of wires and calculate copper area and diameter, resistance, and ampacity.
The Original Color Coded Resistance Calculator -- Enter resistor color codes and calculate resistance.
Capacitance Value Calculator -- Enter capacitor color codes and calculate capacitance.
PCB Trace Impedance Calculator -- "Calculates the characteristic impedance and per-unit-length parameters of typical printed circuit board trace geometries." Includes microstrip, embedded microstrip, stripline and asymmetric stripline calculators.
PCB Trace Width Calculator -- Calculate the trace width for printed circuit boards.

Semiconductors and Integrated Chips

Spreading Resistance Analysis -- "Spreading Resistance Analysis (SRA) determines a resistivity-depth profile in silicon." Includes a silicon resistivity and carrier concentration calculator.

Power Supply

Switched Mode Power Supply Notes -- This site contains "...notes on switched mode power supply design, analysis, and simulation techniques as well as some web calculators specific to power engineering."
RMS Calculations -- Find the RMS, DC and AC components of periodic power supply waveforms.

Resources

Electrical Engineering Library -- Electrical engineering theorems and formulaes.
Electrical & Electronics, Ohm's Law, Formulas & Equations -- Ohm's law, direct current equations, AC single phase equations, AC three phase equations.
WWWVL/EE: Information Resources -- Extensive A-Z electrical and electronics information resources from the WWW Virtual Library.
MIT Electronics Reference Site -- "This website is divided into two parts. One half is devoted to a detailed reference of electrical engineering components. The other half is an engineering tutorial."