Use this electronics calculation for a first-pass component, converter, signal, motor, or sensor estimate when the stated operating conditions and units match the device data.

Total current (A)

Required number input.

Inductance L1 (H)

Required number input.

Inductance L2 (H)

Required number input.

Compute the current through L1 of a parallel pair as total current times L2 / (L1 + L2). The tool evaluates the supplied inputs together and returns the named outputs below; it does not infer omitted operating conditions or change the units shown.^[1]

Current through L1 (A)

The resulting current through l1 returned as a number.

• Inductor calculations depend on core material, air gap, turns, frequency, waveform, temperature, DC bias, copper resistance, skin and proximity effects, fringing, and saturation definition. Small-signal inductance and nominal current rating may not describe switching operation.
• Use finite inputs in the displayed units and preserve more precision than the final presentation requires. Independently verify safety-critical, financial, compliance, or production decisions.

Check the result against the current datasheet and worst-case operating corners, then verify the circuit or measurement with simulation and bench testing where failure matters.

• Current Divider Calculator

  Compute the current through one branch of two parallel resistances: Ix = It * Rother / (Rx + Rother); the lower-resistance branch carries more current.

• Parallel Inductors

  Calculate the total inductance of two inductors connected in parallel.

• Opamp Short Circuit Power

  Estimate output-stage dissipation during an op-amp short to ground as supply-to-short voltage magnitude times the measured short-circuit current; this is not total device power.