Rocket Equation Calculator
Calculate delta-v from the Tsiolkovsky rocket equation using mass ratio and exhaust velocity. Enter values for instant results with step-by-step formulas.
Reviewed by Daniel Agrici, Founder & Lead Developer
Reviewed by Daniel Agrici, Founder & Lead Developer
Formula
ฮv = vโ ร ln(mโ/mโ)
The Tsiolkovsky rocket equation relates delta-v to exhaust velocity and mass ratio. vโ = Isp ร gโ. Higher mass ratio = more delta-v but diminishing returns.
Worked Examples
Example 1: Simple rocket
Problem:vโ=3000 m/s, wet=100,000 kg, dry=10,000 kg
Solution:ฮv = 3000 ร ln(10) = 3000 ร 2.303 = 6908 m/s
Result:6,908 m/s
Reviewed by Daniel Agrici, Founder & Lead Developer ยท Editorial policy