Basic Electrical Calculators

Average Voltage Calculator

Easily calculate average voltage for AC, half-wave, and full-wave rectifiers. Use our online average voltage calculator with formulas, tables, and examples.

Thevenin Voltage Calculator

Easily calculate Thevenin voltage and resistance. Find Vth, Rth, and Norton equivalents using formulas, examples, and step-by-step methods.

dB to Voltage Calculator

Convert decibels to RMS voltage for dBV, dBu, and dBm (with user-specified load impedance). Includes formulas, conversion table, worked examples and a compact FAQ JSON.

Ripple Voltage Calculator

Calculate ripple voltage in rectifier circuits using load current, capacitor, and frequency. Includes formulas, examples, tables, and troubleshooting tips.

Transistor base current calculator

Easily calculate the base current of a transistor using collector current and current gain for accurate BJT circuit design.

instantaneous current calculator

Calculate instantaneous current in AC or DC circuits using voltage, resistance, and time-dependent waveforms with accuracy.

capacitor charge current calculator

Calculate the charging current of a capacitor in RC circuits using voltage, resistance, and capacitance for accurate transient analysis.

Branch current calculator

Easily calculate the current in each branch of a circuit using voltage, resistance, or impedance. Works for DC and AC with accurate results.

Norton current calculator

Calculate Norton equivalent current from short-circuit analysis, load removal tests, or Thevenin parameters for DC and AC circuits.

diode current calculator

Calculate diode current from voltage using the Shockley equation or piecewise practical model. Enter Vd, Is, n, and T to get forward or reverse current (A).

average current calculator

Calculate average current for DC, sine, rectified, and PWM waveforms using the integral over one period or quick closed-form formulas for common cases.

Inductor current calculator

Calculate inductor current for AC, DC, or transients using i(t)= 1/L ∫ 𝑣 (t)dt or I=V/XL Where XL=2rfL.

capacitive current calculator

Compute capacitor current using 𝐼=2𝜋𝑓𝐶𝑉 or I= v/𝑋C where Xc=1/2rfc.Supports RMS/peak, 50/60 Hz, and any capacitance.

total current calculator

Quickly calculate the total current in series or parallel circuits using voltage, resistance, and Ohm’s Law. Supports single-phase and three-phase systems.

current calculator

Easily calculate electrical current using Ohm’s Law:𝐼= 𝑉/R, with instant results for amps from voltage, resistance, or power.

energy charge voltage calculator

Convert energy and charge to voltage (and vice versa). Use V=E/Q or 2E/C for capacitors: handy for electronics and physics problems.

hall voltage calculator

Calculate Hall voltage from magnetic field, current, and carrier density using Vh (B ..I) (n q.t). Perfect for sensor and physics applications.

Thermal Voltage Calculator

Calculate thermal voltage (Vt) for semiconductors at any temperature. Uses Vt = Kt/q to find voltage in volts or millivolts.