📡 SWR (Standing Wave Ratio) Calculator

Calculate your antenna's SWR based on feedline impedance and reflected power.

Forward Power (Watts)

Reflected Power (Watts)

📘 Notes:

• SWR less than 1.5:1 is excellent
• SWR between 1.5:1–2:1 is acceptable
• SWR above 2:1 may indicate antenna mismatch