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astronomy-space
Astronomy and space calculators for observational planning and quick estimates.
6 tools in this category
Astronomy & Space Tools - Free Online Space & Astronomy Calculators
Free astronomy and space tools: moon phase finder, escape velocity calculator, planet weight calculator, telescope magnification comparator, and more. Explore the cosmos.
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Free Escape Velocity Calculator — Online Astronomy & Space Tool
Free escape velocity calculator. Calculate velocity needed to escape planetary gravity. Support for all planets and moons.
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Free Moon Phase Finder — Online Astronomy & Space Tool
Free moon phase finder. See current moon phase and lunar calendar. Find full moons, new moons, and eclipse dates.
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Free Planet Weight Calculator — Online Astronomy & Space Tool
Free planet weight calculator. Calculate your weight on other planets. Compare gravity across the solar system.
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Free Telescope Field Of View Calculator — Online Astronomy & Space Tool
Free telescope FOV calculator. Calculate field of view for telescopes and eyepieces. Plan astronomical observations.
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Free Telescope Magnification Comparator — Online Astronomy & Space Tool
Free telescope magnification calculator. Calculate magnification from focal lengths. Compare telescope and eyepiece combinations.
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