Free Birth Chart Calculator

See your Sun, Moon, and Rising signs. Get your complete planetary positions, houses, and aspects — calculated in seconds with the Swiss Ephemeris.

Powered by Swiss Ephemeris · Whole Sign Houses · Tropical Zodiac

Enter your date of birth

Enter the time shown on your birth certificate (if known)

Search for the city where you were born

What Is a Birth Chart?

A birth chart — also called a natal chart — is a snapshot of the sky at the exact moment you were born. It maps where the Sun, Moon, and planets were positioned across the 12 zodiac signs and 12 houses. Think of it as your astrological fingerprint: no two charts are exactly alike. Your chart doesn't tell you who you must be. It shows you the raw material you're working with — your drives, your blind spots, your natural strengths. The rest is up to you.

The Big Three: Sun, Moon & Rising

Sun Sign

Your core identity and ego. The Sun sign is what most people know — it's the sign the Sun was in on your birthday. It represents your fundamental drive, what gives you energy, and how you express your will.

Moon Sign

Your emotional inner world. The Moon sign reveals how you process feelings, what makes you feel safe, and your instinctive reactions. It's the part of you that comes out when you're alone or with people you trust.

Rising Sign (Ascendant)

Your outward persona and first impression. The Rising sign — determined by the exact time and place of your birth — shapes how others perceive you and how you approach new situations. It sets the structure of your entire chart.

Frequently Asked Questions

What if I don't know my birth time?
You can still calculate your chart. Without a birth time, we use 12:00 noon as a default. Your Sun sign, Moon sign (usually), and planetary positions will still be accurate. However, your Rising sign and house placements require an exact birth time. Check your birth certificate or ask a parent — the Rising sign is worth knowing.
What house system does this calculator use?
Danu uses the Whole Sign house system, the oldest house system in Western astrology. Each house corresponds to one complete zodiac sign, starting from your Rising sign. It's clean, consistent, and avoids the intercepted-sign issues that trip up other house systems.
How accurate is this birth chart calculator?
Very. We use the Swiss Ephemeris, the same astronomical calculation engine used by professional astrologers worldwide. Planetary positions are accurate to within one arc-second. For best results, enter your birth time as precisely as possible.
What is a Rising sign (Ascendant)?
Your Rising sign — also called the Ascendant — is the zodiac sign that was coming over the eastern horizon at the moment you were born. It changes roughly every two hours, which is why birth time matters so much. The Rising sign determines the layout of your entire chart and is often more visible to others than your Sun sign.
Is this really free?
Yes. The chart calculator is completely free with no sign-up required. You get your full chart wheel, all planetary positions, houses, and aspects. If you want a personalized AI interpretation of what your chart means, Danu offers that with a free account (3 messages per day) or unlimited with Premium.

Want Danu to read your chart?

Positions and degrees are just the beginning. Danu connects the dots — your planets, aspects, and current transits — and tells you what it means for your life right now.

Talk to Danu — FreeSee Pricing

Free tier: 3 messages per day. Premium: unlimited.