Moon Phase Calculator
New달의 위상 · 오늘 달 모양 · moon phase calculator · 달 위상 · 월령
Moon Phase Calculator
Enter a date to see the shape of the Moon (its phase) on that day.
Approximate, based on the synodic month (~29.53 days); the real phase may differ slightly.
How to use
- 1
Pick a date (today by default).
- 2
The Moon's shape, phase name, illumination, and age appear.
- 3
Change the date to see the phase change over time.
FAQ
Is this tool free?
Yes — it is completely free to use, with no account or sign-up required.
What is this tool?
See the shape of the Moon (its phase) for any date, shown as a graphic. Pick a date and it tells you which of the eight phases it is — new, waxing crescent, first quarter, full, last quarter, and so on — along with the illumination and the moon's age in days. It's an approximation based on the synodic month (~29.53 days), so it may differ slightly from the real phase. Everything runs in your browser, free with no install.