Doppler Effect Calculator

Calculate observed frequency changes due to motion. Supports sound and light Doppler shifts.

Wave Type

Source Frequency (Hz)

Speed of Sound (m/s)

Source Velocity (m/s)

Positive = toward observer

Observer Velocity (m/s)

Positive = toward source

Visualization

Observed Sound

478.484 Hz

Observed Frequency

+38.484 Hz

Frequency Shift

Shift: 8.75%

Source λ: 0.779545 m

Observed λ: 0.716847 m

Blueshift (Higher Pitch)

Approaching objects appear higher frequency (blueshift), receding objects appear lower (redshift).

Sound: f' = f × (v + v_o)/(v - v_s)

Light: f' = f × √((1 + β)/(1 - β))

where β = v/c

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