Birth Chart Calculator (Natal Chart)
Calculate your complete astrology natal chart with interactive SVG wheel, Sun/Moon/Rising, planetary placements, and houses.
TL;DR: Birth Chart Calculator provides accurate geocentric planetary positions, Ascendant degree, 12 houses, and aspects with zero server uploads.
Natal Chart Wheel
Hover / click nodes to inspectPlanetary Positions & Houses
| Planet | Sign | Degree | House | Element / Modality |
|---|---|---|---|---|
| ☉ Sun | ♋ Cancer | 23° 06' | House 9 | Water (Cardinal) |
| ☽ Moon | ♈ Aries | 12° 10' | House 5 | Fire (Cardinal) |
| ☿ Mercury | ♌ Leo | 20° 14' | House 10 | Fire (Fixed) |
| ♀ Venus | ♊ Gemini | 25° 05' | House 8 | Air (Mutable) |
| ♂ Mars | ♋ Cancer | 6° 16' | House 8 | Water (Cardinal) |
| ♃ Jupiter | ♓ Pisces | 28° 00' | House 5 | Water (Mutable) |
| ♄ Saturn | ♉ Taurus | 2° 33' | House 6 | Earth (Fixed) |
| ♅ Uranus | ♒ Aquarius | 11° 28' | House 3 | Air (Fixed) |
| ♆ Neptune | ♒ Aquarius | 0° 59' | House 3 | Air (Fixed) |
| ♇ Pluto | ♐ Sagittarius | 4° 17' | House 1 | Fire (Mutable) |
Major Natal Aspects
12 aspects identified| Aspect | Planets | Nature | Exact Angle | Orb |
|---|---|---|---|---|
| △ Trine | ☉ Sun & ♃ Jupiter | Effortless Harmonic Flow | 115.1° | 4.9° |
| ☍ Opposition | ☉ Sun & ♆ Neptune | Magnetic Polarity / Balance | 172.1° | 7.9° |
| □ Square | ☽ Moon & ♂ Mars | Dynamic Friction / Catalytic Growth | 84.1° | 5.9° |
| ⚹ Sextile | ☽ Moon & ♅ Uranus | Supportive / Opportunistic | 60.7° | 0.7° |
| △ Trine | ☽ Moon & ♇ Pluto | Effortless Harmonic Flow | 127.9° | 7.9° |
| ⚹ Sextile | ☿ Mercury & ♀ Venus | Supportive / Opportunistic | 55.2° | 4.8° |
| □ Square | ♀ Venus & ♃ Jupiter | Dynamic Friction / Catalytic Growth | 87.1° | 2.9° |
| ⚹ Sextile | ♂ Mars & ♄ Saturn | Supportive / Opportunistic | 63.7° | 3.7° |
| ⚹ Sextile | ♃ Jupiter & ♆ Neptune | Supportive / Opportunistic | 57.0° | 3.0° |
| △ Trine | ♃ Jupiter & ♇ Pluto | Effortless Harmonic Flow | 113.7° | 6.3° |
| □ Square | ♄ Saturn & ♆ Neptune | Dynamic Friction / Catalytic Growth | 91.6° | 1.6° |
| ⚹ Sextile | ♆ Neptune & ♇ Pluto | Supportive / Opportunistic | 56.7° | 3.3° |
What Is an Astrology Birth Chart (Natal Chart)?
According to astrology, a birth chart (or natal chart) is a mathematical snapshot of the sky calculated from your exact birth date, time, and birthplace on Earth. It plots the geocentric positions of the Sun, Moon, 8 planets, Chiron, the Lunar Nodes, and the 12 astrological houses across the 360-degree zodiac wheel.
How to Use the Birth Chart Calculator
Our Birth Chart Calculator utilizes deterministic astronomical ephemeris formulas to calculate accurate planetary positions, signs, degrees, and aspects right inside your web browser.
- Enter your birth date, exact birth time (hours and minutes), and birth city.
- Select your preferred house calculation system (Equal Houses or Whole Sign Houses).
- Click 'Calculate Natal Chart' to render your interactive SVG chart wheel, Big 3 summary, and planetary coordinate tables.
Astrology & Personal Reflection Disclaimer
Astrological interpretations are provided for entertainment, personal reflection, and self-exploration. They do not constitute scientific fact, financial, medical, or relationship guarantees.
100% Client-Side Privacy Guarantee
All birth details and astrological calculations run locally in your web browser. No personal birth times, dates, or cities are transmitted to external servers.
Frequently Asked Questions
- According to astrology, a birth chart (or natal chart) is an astronomical snapshot of the cosmos at the exact second and geographical location of your birth, mapping the Sun, Moon, planets, and house cusps across the 360-degree zodiac.
- Enter your birth date, birth time, and birth city into the calculator fields and click Calculate. The tool computes your Local Sidereal Time and geocentric coordinates in real time.
- An accurate birth chart requires three essential data points: your exact calendar birth date, exact birth time (to the minute), and exact birthplace city or latitude/longitude coordinates.
- Earth rotates 360 degrees every 24 hours, meaning the Ascendant (Rising sign) and house cusps change approximately every 4 minutes. An accurate birth time is vital for determining your Rising sign and exact house placements.
- In astrology, the Big 3 are your Sun Sign (core identity and ego vitality), Moon Sign (emotional processing and instinctual needs), and Rising Sign / Ascendant (social persona, first impressions, and physical lens).
- A horoscope is typically a brief general forecast based solely on your Sun sign. In contrast, a birth chart is a permanent, comprehensive astronomical map of your entire psychological makeup.
- You can still calculate your Sun sign, Moon sign (approximate), and planetary sign placements using a default 12:00 PM time. However, your Rising sign and house boundaries will be uncertain.
- The Equal House system measures 12 equal 30-degree houses starting from the exact degree of your Ascendant. The Whole Sign system assigns the entire 30 degrees of the sign containing your Ascendant to the 1st House.
- Aspects are mathematical angular relationships between planets. Conjunctions (0°) blend energies, trines (120°) and sextiles (60°) represent natural harmony, while squares (90°) and oppositions (180°) represent dynamic growth challenges.
- Yes, 100% private. All astronomical ephemeris formulas and SVG wheel renderings execute locally inside your web browser. No personal birth details or locations are ever sent to remote servers.
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