Ohm's Law states that Voltage (V) equals Current (I) multiplied by Resistance (R), while Power (P) equals V × I. By entering any two known parameters (such as 12V voltage and 4Ω resistance), the solver applies algebraic formulas (I = V/R, P = V²/R, R = V²/P) to compute the other two parameters instantly, alongside 4-band resistor color code bands and circuit schematic diagrams.

To convert battery capacity from mAh to Wh, multiply the nominal cell voltage (e.g. 3.7V for Lithium-ion or 1.2V for NiMH) by the mAh rating and divide by 1,000: Wh = (mAh × V) / 1000. For example, a 5,000 mAh phone battery at 3.7V provides 18.5 Watt-hours of energy.

In alternating current (AC) circuits, Real or Active Power (P in kW) represents the actual usable energy consumed by resistive loads. Apparent Power (S in kVA) is the vector product representing total supplied RMS voltage and current (S = V × I). Reactive Power (Q in kVAR) is the oscillating non-working power stored and returned by inductive and capacitive magnetic/electric fields. The vector relationship is S² = P² + Q², with Power Factor PF = cos(φ) = P / S.

In an unloaded voltage divider, output voltage is V_out = V_in × [R2 / (R1 + R2)]. When an external load resistor (R_load) is attached to the output, R2 and R_load act in parallel: R_parallel = (R2 × R_load) / (R2 + R_load). The loaded output voltage drops according to V_out = V_in × [R_parallel / (R1 + R_parallel)]. Our solver computes both loaded and unloaded voltages and suggests standard E24 resistor pairs.

Electrical conductance (G) is the reciprocal or inverse of electrical resistance (R): G = 1 / R. Resistance is measured in Ohms (Ω) and quantifies how strongly a component opposes current flow, while conductance is measured in Siemens (S, historically mho) and indicates how easily electrons drift through a conductor. For example, a 50 Ω transmission line termination has a conductance of 1 / 50 = 0.02 S (20 mS).

In a single-phase system, active power is P = V_rms × I_rms × PF. In a balanced three-phase AC system, total power is multiplied by the square root of 3 (approx. 1.73205) when using line-to-line voltage (V_LL): P_total = √3 × V_LL × I_line × PF. When using line-to-neutral voltage (V_LN), P_total = 3 × V_LN × I_phase × PF. Our AC Power solver computes both single-phase and 3-phase line/neutral configurations automatically.

Inductive loads like AC induction motors and transformers cause current to lag behind voltage, lowering the power factor and drawing extra reactive current from utility mains. Power Factor Correction connects shunt capacitor banks to supply capacitive reactive power (Q_C), counteracting inductive reactive power (Q_L). The required capacitor reactive power is Q_C = P × [tan(arccos(PF_1)) - tan(arccos(PF_2))], from which microfarad capacitance is derived: C = Q_C / (2π f V²).

Yes. The converter provides 1-click export to CSV spreadsheets, JSON audit reports, and Markdown tables. You can customize the base export filename, toggle automatic ISO date stamps (_YYYY-MM-DD), and copy formatted tables directly into documentation or GitHub pull requests.

Click the '💻 API Code' button (or press Alt+S) to open the Developer API Code Snippets Studio. We provide verified, production-ready code implementations in TypeScript/JavaScript, Python 3, Go, Rust, Java, and Bash that utilize base SI conversion factors for high-precision math.

Yes, 100%. All unit conversions, Ohm's Law wheel computations, AC power factor corrections, battery discharge estimations, and batch calculations execute entirely client-side using JavaScript. No circuit values, voltages, or user data are ever transmitted to external servers or logged in remote databases.