Electrical Calculations
Perform essential electrical engineering calculations with precision using our free online tools. Analyze circuits using Ohm's Law, decode resistor color bands, and calculate series/parallel resistance for professional projects.
Ohm's Law Calculator
Instantly calculate Voltage (V), Current (I), Resistance (R), or Power (P) using fundamental Ohm's Law equations. This essential tool helps electricians and engineers solve circuit parameters without manual math.
Resistor Color Code (4 Band)
Decode 4-band resistor color codes to identify resistance values and tolerances instantly. A must-have utility for electronics hobbyists and technicians working with through-hole components.
Watts-Volts-Amps (DC)
Convert between Power (Watts), Voltage (Volts), and Current (Amps) for DC circuits. Quickly determine load sizing and power requirements for electrical systems and components.
Resistors in Series
Calculate the total equivalent resistance for multiple resistors connected in a series circuit. Essential for designing voltage dividers and limiting current in electronic circuits.
Resistors in Parallel
Compute total resistance for resistors connected in parallel. This tool helps solve complex circuit paths where current splits across multiple components.
Capacitor Energy
Calculate the potential energy stored in a capacitor based on capacitance and voltage. Crucial for safety analysis in high-voltage circuits and photoflash designs.
Wheatstone Bridge
Determine the unknown resistance (Rx) in a balanced Wheatstone Bridge circuit. Widely used in precision measurements and strain gauge sensor applications.
Inductive Reactance
Calculate the inductive reactance (XL) of a coil at a specific frequency. Essential for designing AC filters, crossover networks, and analyzing inductor behavior.
Capacitive Reactance
Determine the capacitive reactance (Xc) of a capacitor at a given frequency. Vital for AC circuit analysis, filter design, and understanding signal attenuation.