Calculate the time constant of a resistor-capacitor (RC) circuit. The time constant determines how quickly the capacitor charges or discharges.
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Resistance in the RC circuit.
Capacitance in microfarads.
How this calculator works
The RC time constant tau is the product of resistance R and capacitance C. After one time constant, the capacitor charges to ~63.2% of its maximum value. After 5 tau, it is considered fully charged.
Common questions about this calculator
These calculators are for educational and informational purposes only. While we strive for accuracy, results should be verified for critical applications. Always consult authoritative sources for engineering or scientific work.
