Radar Cross Section RCS Calculator

Electromagnetic Scattering: Calculate geometric optics RCS ($\sigma$) in $\text{m}^2$ and $\text{dBsm}$ across canonical radar reflector geometries.

Reflector Shape Category:

Primary Dimension a (m):

Secondary Dimension b or L (m):

Illuminating Radar Frequency $f$ (GHz):

RCS in Decibels

-- dBsm

Physical RCS ($sigma$)

-- m²

Physical Projected Area

-- m²

RCS Gain vs Area

-- dB

• Stealth Aircraft / Small Bird: -30 dBsm to -20 dBsm (0.001 - 0.01 m²)

• Human / Small Drone: -10 dBsm to 0 dBsm (0.1 - 1.0 m²)

• Fighter Aircraft: +3 dBsm to +7 dBsm (2 - 5 m²)

• Commercial Airliner / Cargo Ship: +20 dBsm to +40 dBsm (100 - 10,000 m²)

• Current Reflector Equivalent: --

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