basic

Tsiolkovsky Rocket Equation Calculator

Δv = Isp · g · ln(m₀ / m_f) for a chemical rocket.

Compute the achievable Δv of a single-stage rocket from the propellant's specific impulse, the wet mass, and the dry mass, using the Tsiolkovsky rocket equation Δv = Isp · g · ln(m₀ / m_f).

Dr. Helena Ortiz By Dr. Helena Ortiz
Published Last reviewed 1 min read

Inputs

s
kg
kg

Results

Enter values and click Calculate to see results.
Was this helpful?

How to use this calculator

  1. Fill in the inputs above using the units you already have.
  2. Values update automatically as you type — no submit button needed.
  3. Hover any result row for the underlying formula and intermediate values.

Formula

Δv = Isp · g · ln(m₀ / m_f); mass ratio = m₀ / m_f.

In depth

Compute the achievable Δv of a single-stage rocket from the propellant's specific impulse, the wet mass, and the dry mass, using the Tsiolkovsky rocket equation Δv = Isp · g · ln(m₀ / m_f).