Free Hohmann Transfer Calculator
Compute the two delta-v burns and transfer time for a Hohmann transfer orbit between two circular orbits.
m
m
kg
First Burn Δv
2,456.58 m/s
Second Burn Δv1,477.97 m/s
Total Δv3,934.55 m/s
Transfer Time18,928 s
First Burn Δv vs Initial Orbit Radius
Hohmann Transfer Orbit
A Hohmann transfer is the most fuel-efficient two-impulse manoeuvre between two coplanar circular orbits.
Key Equations
1. dv1 = v1 (√(2 r2/(r1+r2)) - 1) 2. dv2 = v2 (1 - √(2 r1/(r1+r2))) 3. Transfer time = π √(a_t³ / (G M)) where a_t = (r1 + r2)/2
Example Calculation
Transfer from LEO (200 km alt, r1 = 6 571 km) to GEO (r2 = 42 164 km).
- 01v1 = √(GM/r1) ≈ 7 789 m/s
- 02dv1 = 7789 × (√(2×42164/(6571+42164)) - 1) ≈ 2 457 m/s
- 03v2 = √(GM/r2) ≈ 3 075 m/s
- 04dv2 = 3075 × (1 - √(2×6571/(6571+42164))) ≈ 1 478 m/s
- 05Total dv ≈ 3 935 m/s