Tsiolkovsky Rocket Equation

Δv = Isp × g₀ × ln(m₀/mf) — solve for any variable.

Solve for

Isp (s)

Initial mass m₀ (kg)

Final mass mf (kg)

Results

Δv5524.1 m/s

Δv5.5241 km/s

Δv19887 km/h

Isp350 s

Initial mass m₀100000 kg

Final mass mf20000 kg

Propellant mass80000 kg

Mass ratio m₀/mf5

Propellant fraction80 %

Engine presets: