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Passive RC and RL Filter Response Calculator
Calculate an unloaded first-order low/high-pass transfer magnitude and phase at a chosen frequency.
Filter topology, Resistance (ohms), RC capacitance (µF), RL inductance (mH), Signal frequency (Hz)
JSON
Browser only
Runs locally in your browser. Your files, pasted content and generated output are not uploaded. Reset clears this tool’s working data.
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How to use this tool
- Enter the labelled values and use the displayed units.
- Choose Calculate result and inspect the full report, assumptions and undefined/no-solution status.
- Choose Download result to save the complete JSON. Reset clears results and restores the example controls.
Examples
Filter topology: rc-low
Resistance (ohms): 1000
RC capacitance (µF): 0.1
RL inductance (mH): 10
Signal frequency (Hz): 1000
Limitations
- RC or RL low/high-pass topology; positive R,active C or L,and frequency. Reports cutoff,complex transfer,magnitude,dB and phase. Inactive component ignored. No loading, cascade, transient, parasitic or hardware design certification.
- Scalar numeric inputs use explicit decimal syntax and IEEE-754 arithmetic; unless a tighter bound is stated, positive values are 1e-12–1e12 and nonnegative values 0–1e12. Derived inventory counts above 1 billion and nonfinite results are refused. Combined input limit400,000 UTF-8 bytes;complete JSON output limit4MiB. Numeric/code input controls allow128 characters. All processing stays in your browser.
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