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35 tools
Use our escape velocity calculator to find out the speed required to leave the surface of any planet.
If you want to calculate the force between two masses, try our gravitational force calculator.
Use our orbital velocity calculator to estimate the parameters of orbital motion of the planets.
Our light year conversion tool allows you to convert light years into different-length units. Figure out how far light will travel in a given light year.
Convert gravity sun acceleration values instantly with our free tool. Get accurate results with clear explanations.
Convert gravity moon acceleration values instantly with our free tool. Get accurate results with clear explanations.
The alien civilization calculator explores the existence of extraterrestrial civilizations by comparing two models: the Drake equation and the Astrobiological Copernican Limits👽
Calculate your cosmic velocity with our free online tool. Get accurate results instantly. No signup required.
Learn the geometry of horizons with our distance to the horizon calculator: on Earth or anywhere else in the Solar System!
Enter the orbital period calculator, where you can calculate the orbital period of a binary system, a satellite around the Earth, and much more while learning about the universe and the laws that rule it.
The rocket equation calculator helps you estimate the final velocity of a rocket.
With this weight on other planets calculator, you can check how much you'd weigh if you landed on another planet within our Solar system.
The angular resolution calculator finds out the angular resolution of a lens.
The luminosity calculator finds a star's luminosity, absolute magnitude, and apparent magnitude.
Calculate the gravitational acceleration at the event horizon of a black hole of a given mass using the Schwarzschild radius calculator.
If you want to know how wide is your window on the stars, our telescope field of view calculator is the right tool for you!
The exoplanet discovery calculator allows you to play around and discover the calculations that got a Nobel Prize in 2019 for the discovery of planets outside the solar system.
Omni's not-flat Earth calculator helps you perform three experiments that prove the world is round.
With this gravitational time dilation calculator you can check how much time slows down by near big objects.
Hohmann transfer calculator lets you find the best fuel-efficient transfers between two circular orbits.
Use this Kepler's third law calculator to find the relationship between a planet's orbital period and it semi-major axis (or mean orbital radius).
If you want to calculate the net thrust generated by a jet rocket engine, the rocket thrust calculator is the easiest way to do it; you don't need to learn rocket physics.
Use this telescope magnification calculator to estimate the magnification, resolution, brightness, and other properties of the images taken by your scope.
The Black Hole Collision Calculator lets you see the effects of a black hole collision, as well as revealing some of the mysteries of black holes, come on in and enjoy!
