Moon Phase Calculator
Find the moon phase for any date. See the phase name, illumination percentage, and how many days until the next full or new moon.
Waxing Crescent
Day 2.4 of 29.5-day lunar cycle
Illumination
6.4%
Next Full Moon
12.4 days
Next New Moon
27.1 days
Lunar Phase Cycle
- 100% free — no account needed
- Runs in your browser
- Nothing is uploaded
Frequently asked questions
Is Moon Phase Calculator really free?
Yes. Moon Phase Calculator is completely free on PureBrowser — every feature, with no account, no trial, and no credit card.
Does Moon Phase Calculator upload my data?
No. Moon Phase Calculator runs entirely inside your browser, so anything you type, paste, or open stays on your own device.
Do I need to sign up or install anything?
Neither. There is no account and nothing to download — open the page and Moon Phase Calculator is ready to use on desktop or mobile.
Does Moon Phase Calculator work offline?
Once the page has loaded, yes. All of the processing happens locally in your browser, so it keeps working without a connection.
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