Tsiolkovsky Rocket Equation Calculator

The Tsiolkovsky rocket equation, named after Russian scientist Konstantin Tsiolkovsky, describes the relationship between the mass of a rocket, its velocity, and the exhaust velocity of the propellant it expels.

The Tsiolkovsky rocket equation is expressed as:

Tsiolkovsky rocket equation

Where:

  • is the change in velocity (delta-v),
  • is the effective exhaust velocity of the rocket engine,
  • is the initial total mass of the rocket (including propellant),
  • is the final mass of the rocket (after expelling the propellant).

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