Free online tool
Moon Phase Today
Check the approximate lunar phase for today or choose a date in the calendar.
What this tool does
The Moon Phase Today tool estimates the lunar phase from the selected date. It shows names such as new moon, first quarter, full moon and last quarter, plus lunar age and estimated illumination.
The calculation is suitable for quick checks, learning, personal planning and curiosity. For professional astronomy, navigation or precise observation, use specialized astronomical sources.
How to use
- Use today or choose another date.
- Click calculate to see the moon phase.
- Review lunar age and approximate illumination.
Common uses
- check today’s moon
- plan sky observation
- study lunar cycles
- see the phase on a past date
Privacy and local calculation
The calculation uses only the selected date and runs in the browser.