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.

Capacitance 1 (F)

Required number input.

Capacitance 2 (F)

Required number input.

Calculate the total capacitance of two capacitors connected in parallel. 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]

Total capacitance (F)

The resulting total capacitance returned as a number.

• Capacitance, ESR, leakage, ripple rating, lifetime, and self-resonance vary with frequency, temperature, DC bias, aging, dielectric, package, and mounting. Nominal capacitance alone does not determine in-circuit impedance or reliability.
• 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.

• Series Capacitors

  Calculate the total capacitance of two capacitors connected in series.

• Parallel Inductors

  Calculate the total inductance of two inductors connected in parallel.

• Crystal Load Caps Parallel

  Compute the external capacitor value required at each of the two crystal pins to meet a specified load capacitance.