Moon Phase Calculator: Free Online Tool for Today’s Lunar Phase & Future Predictions
Curious about the current moon phase or planning around the next full moon? Our free moon phase calculator delivers instant insights into lunar cycles, including illumination percentage, rise and set times, and phase meanings. Perfect for astronomers, gardeners timing plantings, astrologers tracking energies, or anyone wondering what moon phase is today, this lunar phase calculator uses precise astronomical data for any date and location. No apps needed—enter details and explore!
The moon’s 29.5-day cycle influences tides, wildlife, and even human rhythms. Skip the almanac; get tailored results in seconds. See how below.
What is a Moon Phase Calculator?
A moon phase calculator computes the moon’s position relative to Earth and the Sun, determining phases like new, full, or crescent. It factors in date, time, and location for accuracy, often showing visuals or percentages.
Popular for:
- Astronomy hobbies and stargazing events.
- Gardening (e.g., planting by waxing phases).
- Astrology and wellness (e.g., full moon rituals).
Ours excels with global support, future forecasting up to 2100, and educational breakdowns.
Features of Our Free Lunar Phase Calculator
Powered by ephemeris data, this next full moon date calculator includes:
- Current & Future Phases: Today’s phase plus next new/full moons.
- Location-Based: Adjusts for your timezone and viewing angle.
- Illumination & Times: Percentage lit, rise/set schedules.
- Visual Aids: Phase diagrams and monthly calendars.
- Mobile-Friendly: Instant access, no ads interrupting your cosmic vibe.
Unlike simple calendars, we blend science with meanings for holistic use.
How to Use the Moon Phase Calculator
- Enter Date/Location: Pick today or a future date; add city for local times.
- Select Options: Toggle illumination, zodiac sign, or monthly view.
- Calculate: View phase name, percentage, and diagram.
- Explore More: Scroll for meanings and upcoming events.
Tip: For 2025 eclipses, input specific dates—our tool flags them automatically.
Moon Phases Explained: Cycle, Meanings & Astronomy
The lunar cycle repeats every ~29.53 days, driven by the moon’s orbit. Phases are named by visible lit portion:
- New Moon: 0% illuminated; rebirth phase.
- Waxing Crescent: Growing sliver; intention-setting.
- First Quarter: 50% lit; action time.
- Waxing Gibbous: Nearly full; refinement.
- Full Moon: 100% lit; culmination and release.
- Waning Gibbous: Shrinking; gratitude.
- Last Quarter: 50% lit; reflection.
- Waning Crescent: Fading; rest and surrender.
Formula Basics: Phase angle = (Moon’s ecliptic longitude – Sun’s) mod 360°. 0°=New, 180°=Full.
Moon Phase Examples: Today’s & Historical Dates
Try these with our tool:
Today’s Moon Phase (November 16, 2025)
As of now, expect a Waxing Gibbous (~85% illuminated), rising post-sunset—great for evening observations.
Next Full Moon
November 23, 2025: Beaver Moon at 100%, peaking at midnight UTC.
Historical: Apollo 11 Landing
July 20, 1969: Last Quarter phase, aiding safe landings with half-lit terrain.
| Phase | Illumination % | Days from New | Meaning & Use |
|---|---|---|---|
| New Moon | 0% | 0 | New beginnings; seed planting |
| Waxing Crescent | 1-49% | 1-7 | Goal setting; growth spells |
| First Quarter | 50% | 7.4 | Decisions; courage rituals |
| Waxing Gibbous | 51-99% | 8-14 | Refinement; study focus |
| Full Moon | 100% | 14.8 | Manifestation; full energy |
| Waning Gibbous | 99-51% | 15-22 | Gratitude; sharing wisdom |
| Last Quarter | 50% | 22.1 | Release; forgiveness |
| Waning Crescent | 49-1% | 23-29 | Rest; introspection |
Why Choose Our Moon Phase Calculator Over Others?
Stand out under the stars with comprehensive tools:
| Tool | Future Predictions | Location Support | Illumination % | Educational Meanings |
|---|---|---|---|---|
| RaikCalculator (Ours) | Up to 2100 | Yes | Yes | Yes |
| TimeandDate | Years Ahead | Yes | Yes | Partial |
| Moongiant | Monthly | No | Yes | No |
| US Naval Observatory | Custom Dates | Yes | Partial | No |
Blending NASA-level accuracy with user-friendly insights.
FAQ: Common Moon Phase Calculator Questions
- What moon phase is today?
- Our tool shows real-time: e.g., Waxing Gibbous on Nov 16, 2025—check live!
- How accurate are moon phase predictions?
- 99.9% via ephemeris; accounts for leap years and orbits.
- Do moon phases affect sleep or moods?
- Studies suggest yes—full moons may disrupt REM; phases tie to circadian rhythms.
- Can I find eclipse dates?
- Yes, flagged in results for solar/lunar events.
Align with the cosmos—use our free moon phase calculator today and track the lunar magic. Share your phase discoveries below!