Free Birth Chart Calculator — Natal Chart & Astrology Reading
Calculate your birth chart instantly using the Swiss Ephemeris. Enter your birth date, time, and location to discover your Sun sign, Moon sign, Ascendant, and complete planetary positions.
Features
- Natal Chart — Planet positions in signs and houses with interactive chart wheel
- Aspects — Conjunctions, oppositions, trines, squares, sextiles with configurable orbs
- Essential Dignities — Domicile, exaltation, triplicity, terms (Egyptian bounds), face/decan
- House Systems — Whole Sign, Placidus, Regiomontanus, Equal
- Transits — Real-time planetary transits with date scrubber
- Synastry & Composite — Relationship chart comparison
- Secondary Progressions — Day-for-a-year progressed chart with solar arc directions
- Primary Directions — Zodiacal and Ptolemaic mundane directions with Naibod and Ptolemy keys
- Zodiacal Releasing — Hellenistic time-lord technique from Vettius Valens (Fortune & Spirit)
- Firdaria — Persian time-lord system with day/night sequences
- Decennials — Chaldean planetary period system
- Profections — Annual house profections with time lord identification
- Bounded Periods — Circumambulation through Egyptian bounds
- Returns — Lunar, Solar, Jupiter, and Saturn returns with triple return detection
- Chart Patterns — Grand Trine, T-Square, Yod, Grand Cross, Kite, Mystic Rectangle, Stellium
- Midpoints — Midpoint trees, pictures, and 90° dial
- Declinations — Parallels, contra-parallels, and out-of-bounds planets
- Fixed Stars — Major fixed stars with conjunctions to natal planets
- Lunar Mansions — 28 Arabic Manazil al-Qamar with electional finder
- Horary Astrology — Traditional horary with strictures, receptions, and dignities
- Hellenistic Lots — Part of Fortune, Part of Spirit, and additional Arabic parts
Frequently Asked Questions
What is a birth chart?
A birth chart (natal chart) is a map of the sky at the exact moment and location of your birth, showing planetary positions in zodiac signs and houses.
How do I calculate my birth chart?
Enter your birth date, birth time, and birth city. The calculator uses the Swiss Ephemeris for precise planetary positions, house cusps, aspects, and dignities.
What if I don't know my birth time?
Check "I don't know my birth time" and the calculator defaults to noon. Planet signs and aspects remain accurate, but house placements won't be reliable.
Is this calculator free?
Yes, completely free. Cast natal charts, view transits, calculate progressions, and access all techniques without payment.
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