Your Natal Blueprint

Precision astronomy for the moment of your birth — VSOP87 planetary algorithms accurate to roughly an arcminute (1800–2200 CE), with your Ascendant, twelve houses, and every aspect computed privately in your browser.

Private by design. Your chart is computed in your browser — your birth data never leaves your device. No account, no tracking.

Identity

Your Name

Please enter your name.

Used to label your saved chart.

Moment of Birth

Birth Date

Please enter your birth date.

Your date of birth.

Birth Time — optional

Needed for your Ascendant & houses.

Time of Day — tap to approximate if exact time is unknown

III

Place of Birth

Birth City

Please select a city from the dropdown.

Select a result from the dropdown for precise coordinates.

House System

Equal

Each house spans exactly 30°. Simplest and most widely recommended for beginners.

Placidus

Time-based divisions. The most popular system in Western astrology today.

Whole Sign

Each sign = one house. The oldest classical method, used in Hellenistic astrology.

Lunar Node Model

Mean Node Smoothly-moving classical point (default) True Node Osculating node — wobbles ±~1.5° about the mean

Black Moon Lilith (mean lunar apogee, ⚸) and the lunar nodes (☊ / ☋) are always included in your chart.

Instant, private calculation — no data ever leaves your device.

What You'll Discover

What Is a Natal Chart?

A natal chart is a snapshot of the sky at the exact moment of your birth. It maps every planet's position in the zodiac and shows which astrological house it occupied from your birthplace.

Sun, Moon & Rising

The "big three" describe your core identity (Sun), emotional inner world (Moon), and the mask you present to the world (Ascendant / Rising sign).

10 Planetary Placements

Mercury governs communication, Venus love, Mars drive, Jupiter growth, Saturn discipline, Uranus innovation, Neptune dreams, and Pluto transformation.

12 Houses

Houses represent life areas: identity, money, communication, home, creativity, health, relationships, transformation, philosophy, career, community, and the unconscious.

Calculation Accuracy

Arcminute-accurate · 1800–2200 CE

AstroPrecise uses VSOP87-derived mean orbital elements for the outer planets and a full perturbation series for the Sun and Moon, giving positional accuracy within ~1 arcminute for dates between 1800–2200 CE. The Ascendant is computed from Local Sidereal Time derived from your exact latitude, longitude, and birth time. House cusps follow the selected system (Equal, Placidus, or Whole Sign).