Moon sign calculator
Find your moon sign, the sign the Moon was in when you were born, from your date and time of birth, with the Moon's degree and a warning when it changed signs that day.
How to useWhat is my moon sign?
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Moon sign calculator: what it is for
Find out which sign the Moon was in when you were born, with its degree, element, modality and ruler. Since the Moon changes signs every two and a half days, the tool tells you when it changed signs on your birth date and at what time, so you know whether your time of birth makes a difference.
Everything is calculated in your browser, with no sign-up and without sending your birth date to any server. Astrology is a cultural tradition with no scientific evidence: use it for fun.
How to use
- Type your date of birth.
- Enter the time and time zone, if you know them.
- See your moon sign and the sign-change warning.
When to use it
- Getting to know your emotional side in astrology.
- Completing the Sun, Moon and rising trio.
- Curiosity and conversations with friends.
Frequently asked questions
What is the moon sign?
It is the zodiac sign the Moon was in at the moment you were born. In astrology, it is associated with emotions, emotional needs and how you find security, while the sun sign speaks more about identity.
Do I need my time of birth?
It helps a lot. The Moon spends about two and a half days in each sign, so on many days it stays in the same sign all day, but on days when it changes, the time decides. The tool tells you when the Moon changed signs on the date you entered and at what time.
How is the Moon's position calculated?
With a simplified astronomical formula for the Moon's longitude, including the main orbital correction terms, with an error of about 0.2 degrees, in the tropical zodiac. Astrology is a cultural tradition with no scientific evidence: use it for fun.
Is it really free?
Yes, 100% free. No sign-up, no subscription and no usage limits. All Tools123 tools are free and run right in your browser.