Astronomy & Earth Science
Redshift Calculator
Lets users compute and verify redshift instantly with formula, steps and examples — no manual math.
Enter your details
nm
nm
Your result
Redshift (z)
0.0102
z = (λ_obs − λ_rest)/λ_rest = 0.01021; recession velocity ≈ 3061 km/s.
Recession velocity
3,060.5051 km/s
Interpretation
Redshift (receding)
About this calculator
Redshift z = (λ_observed − λ_rest) / λ_rest. For small z, recession velocity ≈ zc. Positive z means the source recedes (redshift); negative means it approaches (blueshift).
Frequently asked questions
Why CalcBreeze
- ✔ Verified formulas, instant recalculation
- ✔ Works on every device, no signup needed
- ✔ Save, share & export results
- ✔ 1100+ calculators across 50+ categories
- ✔ Pixel-consistent design across every tool