RC Rise Time Calculator

This tool calculates the Rise Time of a simple RC low pass filter network.

Enter

• Resistance R (units: milliOhm/Ohm/kilOhm/megOhm)
• Capacitance C (units: Farad/milliFarad/microFarad/nanoFarad)

Formula

t_r = 2.197*RC

Rise time in this formula represents the time it takes to get from 10% to 90%.

Example Calculation

An RC low pass filter with R = 1 ohm and C = 1 microfarad has a rise time of 2.2 microseconds.

Related Calculators

• Capacitor Frequency
• RC Time Constant
• Capacitor discharge resistor calculator
• Cap discharge current calculator

References

[1] Rise Time of a Single Stage Low Pass RC Network on Wikipedia