3 interactive astronomy calculators with live visualizers. Eagle-eyed accuracy for every calculation.
3
INTERACTIVE
—
REFERENCE PAGES
100%
ALWAYS FREE
Moon Phase Calculator
Find the moon phase for any date with the illuminated percentage, lunar age, and next new ...
Calculate instantly →
Sunrise and Sunset Calculator
Find sunrise, sunset, solar noon, day length and all three twilight stages for any latitud...
Calculate instantly →
Weight on Other Planets Calculator
Enter your weight to see what you would weigh on every planet, the Moon, Pluto and the Sun...
Calculate instantly →
Every EagleCalculator astronomy calculator includes a live real-time visualizer that updates on every keystroke, a full worked example with verified math, and a complete FAQ section. All formulas are verified against official sources. Results are for informational purposes only.
Last updated: July 27, 2026 · 3 interactive + 0 reference pages live · Auto-updates as new calculators are added · Eagle-eyed accuracy for every calculation.