Moon Phase Calculator
See the phase of the moon on any date, how much of it is lit, its age in days, and the dates of the next full and new moons.
Result
Uses the average lunar month of 29.53 days, so dates can be off by a day. Phases are worked out for noon UTC.
Moon phase
Full moon
- Illuminated
- 99.52%
- Days since the new moon
- 14.1days
- Next full moon (about)
- Mon, Oct 26, 2026
- Next new moon (about)
- Mon, Nov 9, 2026
How to use the Moon Phase Calculator
- Date
The results update as you type, and you can copy a link that reopens the calculator with your numbers filled in.
What it tells you
- Moon phase
- Illuminated
- Days since the new moon
- Next full moon (about)
- Next new moon (about)