Tsiolkovsky Rocket Equation & Delta-V Calculator

Calculate ideal velocity increments (Δv), mass ratio, payload fractions, and stage propellant mass requirements for single and multistage orbital vehicles.

Propulsion & Staging Parameters

Specific Impulse Isp (seconds):

Target Mission Delta-V Δv (m/s): LEO ~ 9,300 m/s; GTO ~ 12,000 m/s

Payload Mass m_payload (kg):

Stage Structural Coefficient ε_s: Dry / (Dry + Propellant), typically 0.06-0.10

Number of Stages (Equal Δv distribution):

Vehicle Sizing & Lift-off Mass

Total Gross Lift-Off Mass (GLOW):

—

— Metric Tonnes

Overall Payload Fraction:

—

Mass ratio: —

Total Usable Propellant:

—

Total Dry Structural Mass:

—

SSTO / Mission Feasibility:

—

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Tsiolkovsky Rocket Equation & Delta-V Calculator

Propulsion & Staging Parameters

Vehicle Sizing & Lift-off Mass

Frequently Asked Questions