Use our free Delta V Calculator to precisely compute the change in velocity required for spacecraft maneuvers. Based on the Tsiolkovsky rocket equation, this tool helps engineers and enthusiasts plan space missions by inputting specific impulse, initial mass, and final mass to understand propellant requirements and orbital mechanics for effective space travel.
Formula:
The Delta V (Δv) is calculated using the Tsiolkovsky rocket equation:
Δv = Isp × g0 × ln(m0 / mf)
Where:
- Δv: Delta-v (change in velocity, usually in m/s)
- Isp: Specific Impulse (in seconds) - a measure of engine efficiency
- g0: Standard Gravity (constant, approximately 9.80665 m/s²)
- m0: Initial Total Mass (wet mass, rocket + propellant, in kg)
- mf: Final Total Mass (dry mass, rocket after propellant is expended, in kg)
- ln: Natural logarithm