Create professional natal charts with 23 house systems, 1000+ fixed stars, and 97+ Arabic Parts.
Swiss Ephemeris precision in under 300ms.
The Birth Chart API works best in combination with our other tools. Add
Built for scale, optimized for speed
From 23 house systems to 1000+ fixed stars
Everything you need to integrate professional birth chart generation
The Birth Chart API transforms months of complex astronomical programming into 3 lines of code. Create professional natal charts with 23 house systems, 1000+ fixed stars, and Swiss Ephemeris precision. Unlike simple chart generators that support 4-6 house systems, our API includes rare systems like Morinus and Alcabitius used by traditional astrologers. The result? Beautiful SVG charts in under 300ms that match $500+ desktop software quality. Essentially a Swiss Ephemeris online calculator API for natal charts, our astro charts API generates birth charts with the same precision as professional desktop software - but accessible via simple REST API calls.
The Birth Chart API works in 3 simple steps: (1) Send birth data (date, time, location) via HTTP POST, (2) Our Swiss Ephemeris engine calculates planetary positions with 0.0001ยฐ precision, (3) Receive beautiful SVG chart in <300ms.
The API automatically handles complex astronomical calculations including precession, nutation, and Delta-T corrections.
You get professional results without understanding orbital mechanics.
Most APIs support 4-6 basic house systems (Placidus, Equal, Whole Sign).
We support 23 systems including rare ones like Morinus (used in French astrology), Alcabitius (Arabic tradition), and Topocentric (accurate for extreme latitudes).
This matters because different astrological traditions require specific systems.
Vedic astrologers need Whole Sign, medieval astrologers use Alcabitius, and modern astrologers prefer Placidus.
Integration takes under 5 minutes.
Get your API key, use fetch to POST to /birth-chart endpoint with birthData.
The API returns complete SVG you can embed directly in web pages or mobile apps.
Use <img src={data:image/svg+xml,${svg}} /> or render to canvas.
The SVG scales perfectly from phone screens to poster prints.
Fixed stars add profound depth to chart interpretation.
Stars like Regulus (royal star) and Aldebaran (watcher of the east) have specific meanings when conjunct planets.
Our API includes 500+ stars with magnitudes, coordinates, and traditional meanings.
This gives astrologers the same data as $500+ professional software.
Competitors typically include 0-100 stars.
Arabic Parts (western term) and Hermetic Lots (Hellenistic term) are calculated points with specific meanings.
Our API includes the complete Hermetic system of Paulus Alexandrinus (4th century CE) with hierarchical dependencies: Fortuna (material), Spirit (soul), Eros (from Spirit - passion), Victoria (from Spirit - triumph), Nemesis (from Fortuna - karma).
We calculate 97+ Parts/Lots including house-based ones like Marriage and Career.
Most APIs include only 5-10 basic parts.
Swiss Ephemeris is the same astronomical engine used by NASA and $500+ professional software.
It provides 0.0001ยฐ precision (1/36000 of a degree) and accounts for all perturbations affecting planetary motion.
This accuracy matters for precise aspects and house cusps.
The ephemeris is valid from 13000 BCE to 17000 CE, supporting historical chart research.
Add professional birth charts to your astrology app with native components
Generate birth charts for compatibility analysis and relationship insights
White-label chart generation for astrological consulting platforms
Interactive chart examples for astrology courses and tutorials
Batch chart generation for astrological research and statistical analysis
Embed beautiful charts in articles, blogs, and social media content
| Chart Types | Natal, Synastry, Composite, Transit, Solar Return, Lunar Return |
| House Systems | 23 systems including Placidus, Whole Sign, Koch, Equal, Campanus, Morinus |
| Fixed Stars | 1000+ with magnitudes, coordinates, and traditional meanings |
| Arabic Parts/Lots | 97+ including complete Hermetic system with dependencies |
| Response Time | <300ms average, <500ms p99 for complex charts |
| Precision | Swiss Ephemeris 0.0001ยฐ accuracy (NASA JPL data) |
| Output Format | Scalable SVG, print quality, customizable styling |
| Customization | Colors, chart styles, point selection, orb settings |
| Languages | 9 languages: English, Spanish, French, German, Portuguese, Italian, Dutch, Polish, Russian |
| Date Range | 13000 BCE to 17000 CE (30,000 year span) |
| Coordinate Systems | Tropical, Sidereal, Heliocentric, Geocentric |
| Integration | RESTful API, SDKs, Webhooks, interactive documentation |
| Feature | Astrology API | Others |
|---|---|---|
| House Systems | 23 systems | 4-6 basic systems |
| Fixed Stars | 1000+ stars | 0-100 stars |
| Arabic Parts | 97+ Hermetic | 1-5 basic |
| Generation Speed | <300ms | 2-5 seconds |
| Output Quality | Vector SVG | Raster PNG |
| Precision | Swiss Ephemeris 0.0001ยฐ | Basic ephemeris |
| Customization | Unlimited styling | 3-5 themes |
| Languages | 9+ languages | English only |
| API Access | Full RESTful API | Limited/No API |
| Price | $11-99/month | $49-299/month |
Start free, scale as you grow. No hidden fees, no surprises.
For small apps and personal projects
For growing apps and medium traffic
For enterprise-scale applications
All plans include comprehensive documentation and SDKs
Questions? Talk to our team
Everything you need to know about birth chart generation