☾︎ Moon · Calculator
Moon Sign Calculator
Find your moon sign from your birth date and time. The moon sign is said to describe your feelings and inner world — the emotional counterpart to your sun sign.
Your details never leave your browser. Nothing is stored or sent.
Good to know — the Moon changes sign about every two and a half days, so on a changeover day an inexact time can shift the result. Astrology is for reflection and entertainment.
How the moon sign calculator works
This moon sign calculator works out which zodiac sign the Moon stood in at the moment of your birth. The Moon is the fastest-moving body in the chart, sweeping through all twelve signs in about a month and changing sign roughly every two and a half days — which is why the date, and ideally the time, both matter.
Enter your birth date and, if you know it, your birth time. With a time the result is precise; without one the calculator uses midday as a sensible default, which is accurate except on the days the Moon happens to change sign.
What your moon sign means
If the sun sign is your core identity, the moon sign is your emotional world — your instincts, needs and the way you feel safe and comforted. A Cancer moon longs for closeness and security, an Aquarius moon prizes emotional freedom, a Scorpio moon feels deeply and intensely. Read it as a reflective lens, not a fact. Enter your details above to find yours.
Frequently asked questions
How is my moon sign calculated?
The calculator works out which zodiac sign the Moon stood in at your birth. The Moon moves quickly, changing sign roughly every two and a half days, so it uses your birth date and time to place it.
Why do I need my birth time?
Because the Moon changes sign so often, the time pins down the sign on changeover days. Without a time the calculator uses midday, which is accurate except on the days the Moon happens to switch signs.
What does the moon sign mean?
If the sun sign is your core identity, the moon sign is your emotional world — your instincts, needs and how you feel safe. It is read as the inner, feeling side of your chart.
Is it free and private?
Yes. The moon sign calculator is free, needs no sign-up and runs entirely in your browser; nothing you enter is stored or sent.