RC Filter Cutoff Calculator
Compute the −3 dB cutoff f_c = 1/(2πRC) of a first-order RC filter.
Input Data
Input Resistor R.
Ω
Input Capacitor C.
F
Results
159.1549Hz
f_c = 1/(2πRC) = 159.1549 Hz
At a glance:RC Filter Cutoff Calculator: enter parameters to compute results; complements related calculators.
Formula
f_c = 1 / (2π R C)
f_c: −3 dB cutoff frequency
How to Use
- Enter resistor R and capacitor C.
- Get cutoff frequency f_c.
Case Studies
1 kΩ + 1 µF
f_c = 1/(2π·1000·1e-6) ≈ 159.2 Hz.
FAQ
Relation to time constant?
f_c = 1/(2πτ) where τ = RC.
Related Tools
References
Content review: Calculatorism Science Team. Formula and numeric tests verified; results for reference only.