Free Birth Chart Calculator
Enter your birthdate, and optionally your birth time, to explore your Sun sign and approximate Big Three astrology profile.
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Time
1 minute
Cost
Free
Privacy
Birth details stay in your browser.
What this tool does
This quick reader introduces your Big Three: Sun, Moon, and Rising signs. It is built for fast reflection before exploring a full birth chart.
What you get
- Sun sign from birthdate
- Approximate Moon sign
- Approximate Rising sign with time
How it works
Sun sign uses standard zodiac date ranges. Moon sign and Rising sign are simplified approximations, so exact astrology work still requires precise birth time and location.
How to use your result
- 1Use your Sun sign result even if you do not know your birth time.
- 2Add birth time for an approximate Moon and Rising overview.
- 3Read compatibility or full sign guides to understand each placement.
A grounded note
This is a simplified Big Three calculator, not a full ephemeris-based natal chart.
Frequently asked questions
What are the Big Three in astrology?
The Big Three are your Sun sign, Moon sign, and Rising sign. They are often used as a simple overview of identity, emotion, and first impression.
Do I need my birth time?
You can find your Sun sign with only a birthdate. Moon and Rising signs are more time-sensitive, so birth time makes the result more useful.
Is this a complete birth chart?
No. This is a simplified Big Three reader. A complete birth chart requires exact time, location, and planetary calculations.
Why does birth location matter?
Your Rising sign depends on the sky at your exact birthplace and time, so location matters for precise chart work.