Enter a transfer function H(s) and get magnitude and phase Bode plots instantly
Enter polynomial coefficients of s, highest power first, comma-separated. Example: denominator 0.001, 0.11, 1 means 0.001s² + 0.11s + 1.
Magnitude (dB) vs ω (rad/s)
Phase (degrees) vs ω (rad/s)
The tool evaluates H(jω) numerically across five decades of frequency and plots gain in decibels and unwrapped phase in degrees — the standard Bode representation used in control systems and signal processing courses. Use the presets to explore first and second-order systems, resonance peaks, and −20 dB/decade slopes.
Your data stays private. All processing happens locally in your browser. No data is collected, stored, or sent to any server.