Moon sign
calculator

Moon in every sign

1. 1

   Enter your birth data

   Your birth date is enough. You only need a time for the house.

2. 2

   Calculate the position

   We use the Swiss Ephemeris engine — the same calculation base professional astrology software runs on. Arc-second accuracy, free.

3. 3

   Read the interpretation

   You instantly see your sign — plus a clear explanation of what it says about you, and a link to the matching interpretation.

Do I need my birth time for the Moon?

Usually not. The Moon changes sign roughly every 2.5 days — your birth date is almost always enough. Only if you were born on the exact day the Moon changed sign does the time help pin it precisely.

What does my Moon sign say about me?

Your Moon sign shows how Moon expresses itself in your chart. Enter your birth date, find your sign, and read the full interpretation below.

Is the Moon calculator free?

Yes. The calculator is completely free and needs no sign-up. We only ask for your email when you want to connect the result to your full birth chart.