Doppler Effect Calculator
Compute the observed frequency f' = f·(v ± v_o)/(v ∓ v_s).
Input Data
Source Frequency
Hz
Wave Speed
m/s
Source Speed
m/s
Results
f' = f·v/(v−v_s) (source approaching).
1,111.1111Hz
At a glance:f' = f·v/(v ∓ v_s); sign depends on approach/recede. Complements relativistic-doppler and wave-properties.
Formula
f' = f·(v/(v − v_s)) (approaching).
$$f' = f \times \dfrac{v}{v - v_s}$$How to Use
- Enter source frequency, wave speed and source speed.
- The tool returns observed frequency.
Case Studies
f=440, v=343, v_s=34 (approach)
f' ≈ 488 Hz.
FAQ
Observer moving?
Use f' = f·(v±v_o)/v instead.
Related Tools
References
Content review: Calculatorism Science Team. Results are for reference only; please refer to the relevant authorities for the official figures.