Aerospace & Physics Calculators
Type your numbers, see the answer and the equation behind it. Every formula is checked against textbook values.
Spaceflight and orbits
- Delta-v Calculator (Tsiolkovsky Rocket Equation)Delta-v is how much a rocket can change its speed by burning its propellant.
- Hohmann Transfer CalculatorA Hohmann transfer moves a spacecraft between two circular orbits with two engine burns.
- Orbital Period CalculatorThe orbital period is how long a satellite takes to go once around the Earth.
- Orbital Velocity & Escape Velocity CalculatorOrbital velocity is the speed needed to stay in a circular orbit at a given height.
- Thrust-to-Weight Ratio CalculatorThe thrust-to-weight ratio compares an engine’s push with the vehicle’s weight.
Flight and aerodynamics
- Stall Speed Calculator (with Bank Angle and Altitude)Stall speed is the slowest a wing can fly while still holding the aircraft up.
- Lift Equation CalculatorThe lift equation says how much upward force a wing makes.
- Mach Number & Speed of Sound Calculator (Standard Atmosphere)The speed of sound depends only on air temperature, so it falls as you climb until about 11 km, then stays the same.
- Rotor Hover Power Calculator (Momentum Theory)A hovering helicopter or drone pushes air down to hold itself up.