Free Birth Chart Calculator
Enter your birth details below to calculate your complete natal chart. Get your Sun, Moon, Rising signs and all planetary placements with personalized interpretations.
Your information is private and secure. We only use your birth data to calculate your chart.
What You’ll Discover in Your Birth Chart
The Big Three
Your Sun sign (core identity), Moon sign (emotional self), and Rising sign (how others see you) — the three most important placements in astrology.
All 10 Planets
Mercury, Venus, Mars, Jupiter, Saturn, Uranus, Neptune, and Pluto — each in their zodiac sign with written interpretations explaining what the placement means for you.
Houses & Aspects
All 12 house cusps showing where planetary energy plays out in your life, plus the major aspects between planets that reveal your inner dynamics.
About This Calculator
A birth chart (also called a natal chart) maps the positions of every planet in the sky at the exact moment you were born. Unlike your Sun sign alone, a complete birth chart reveals the full complexity of your astrological profile — including how you think, love, fight, and grow.
Our calculator uses astronomical data to determine planetary positions with precision, then pairs each placement with in-depth interpretations written specifically for your combination of signs and houses.
New to birth charts? Learn how to read your birth chart with our step-by-step beginner guide, or explore individual placement interpretations for all planets, rising signs, and midheaven positions.
Frequently Asked Questions
What information do I need to calculate my birth chart?
You need your birth date (month, day, year), birth time (as exact as possible — check your birth certificate), and birth location (city and country). The birth time determines your Rising sign and house placements.
Can I get a birth chart without my exact birth time?
Yes. Without a birth time, your Sun, Moon, and planetary signs are still accurate. Your Rising sign and house placements will be approximate. We recommend entering noon as a default if your birth time is unknown.
Is this birth chart calculator really free?
Yes, completely free. You get your Sun, Moon, Rising signs plus all 10 planetary placements calculated instantly. Detailed written interpretations for each placement are available after entering your email.
How accurate is this birth chart calculator?
Our calculator uses the Swiss Ephemeris astronomical data, the same source used by professional astrologers. Planetary positions are accurate to within fractions of a degree. The accuracy of your Rising sign and houses depends on how precise your birth time is.
What will I learn from my birth chart?
Your birth chart reveals your Sun sign (core identity), Moon sign (emotional nature), Rising sign (how others perceive you), plus Mercury (communication style), Venus (love language), Mars (drive and ambition), and five more planetary placements — each with detailed interpretations.