Redshift Calculator
Free calculate redshift from observed and rest wavelengths, and determine velocity using the doppler effect.
Input Parameters
H-α line: 656.285 nm
Results
Enter wavelengths to calculate redshift
Redshift Formula
Redshift (z)
z = (λ_obs - λ_rest) / λ_rest
Where:
- • z = redshift
- • λ_obs = observed wavelength
- • λ_rest = rest wavelength
Velocity (Non-relativistic)
v ≈ z × c
Where:
- • v = velocity (m/s)
- • z = redshift
- • c = speed of light (3×10⁸ m/s)
- • Valid for v << c