Free Rocket Delta-V Calculator
Calculate the total delta-v a rocket can achieve from the Tsiolkovsky equation: dv = ve * ln(m0 / mf).
m/s
kg
kg
Delta-V
6,907.76 m/s
Delta-V (km/s)6.9078 km/s
Mass Ratio10.0000
Delta-V vs Exhaust Velocity (ve)
Rocket Delta-V (Tsiolkovsky Equation)
Delta-v is the total change in velocity a rocket can achieve by expelling all its propellant.
Formula
dv = ve * ln(m0 / mf)
The logarithmic dependence means that most of a rocket's mass must be propellant to achieve high delta-v.
Example Calculation
ve = 3000 m/s, m0 = 100 000 kg, mf = 10 000 kg.
- 01dv = ve * ln(m0 / mf)
- 02mass ratio = 100000 / 10000 = 10
- 03dv = 3000 * ln(10)
- 04dv = 3000 * 2.3026 = 6907.8 m/s