Generate Professional Birth Charts with Swiss Ephemeris Precision
Like having a $500 astrology software as an API. 23 house systems, 1000+ fixed stars, 97+ Arabic parts, and beautiful SVG output in under 300ms.
Enterprise-Grade Chart Generation
Professional accuracy and performance trusted by 10,000+ apps
Birth Chart API: Complete Developer Guide
Everything you need to integrate professional birth chart generation
Birth Chart API transforms months of complex astronomical programming into 3 lines of code. Generate professional-quality natal charts with 23 house systems, 1000+ fixed stars, and Swiss Ephemeris precision. Unlike basic 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.
How does Birth Chart API work?
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 0.0001° precision, (3) Receive beautiful SVG chart in <300ms.
The API handles complex astronomical calculations including precession, nutation, and delta-T corrections automatically.
You get professional results without understanding orbital mechanics.
What makes our 23 house systems special?
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 (precise 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.
How to integrate Birth Chart API into your app?
Integration takes under 5 minutes.
Install our SDK (npm install astroapi), add your API key, and call generateBirthChart(birthData).
The API returns complete SVG that you can embed directly in web pages or mobile apps.
React component: <BirthChart svg={apiResponse.svg} />.
Flutter widget ready.
The SVG scales perfectly from phone screens to poster prints.
Why are 1000+ fixed stars important?
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 1000+ stars with magnitudes, coordinates, and traditional meanings.
This gives astrologers the same data as $500+ professional software.
Competitors typically include 0-100 stars.
What are Arabic Parts and Hermetic Lots?
Arabic Parts (Western term) and Hermetic Lots (Hellenistic term) are calculated points with specific meanings.
Our API includes the complete Hermetic system from Paulus Alexandrinus (4th century CE) with hierarchical dependencies: Fortune (material), Spirit (soul), Eros (from Spirit - passion), Victory (from Spirit - triumph), Nemesis (from Fortune - karma).
We calculate 97+ parts/lots including house-based ones like Marriage and Career.
Most APIs include only 5-10 basic parts.
How does Swiss Ephemeris ensure accuracy?
Swiss Ephemeris is the same astronomical engine used by NASA and $500+ professional software.
It provides 0.0001° 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.
Use Cases
Astrology Mobile Apps
Add professional birth charts to your astrology app with native components
Dating & Compatibility
Generate birth charts for compatibility analysis and relationship insights
Professional Astrologers
White-label chart generation for astrology consultation platforms
Educational Platforms
Interactive chart examples for astrology courses and tutorials
Research & Analytics
Batch chart generation for astrological research and statistical analysis
Content Publishers
Embed beautiful charts in articles, blogs, and social media content
Technical Specifications
| 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 0.0001° 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 |
Birth Chart API Comparison - Why We're Superior
| Feature | AstroAPI | 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 0.0001° | 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 |
Birth Chart API Questions & Answers
Everything developers need to know about professional chart generation
Simple, Transparent Pricing
Start free, scale as you grow. No hidden fees, no surprises.
Starter
For small apps and personal projects
- All basic endpoints
- 12 house systems
- Email support
Professional
For growing astrology applications
- All enhanced endpoints
- 23 house systems
- AI interpretations
- Priority support
Business
For high-volume applications
- ALL endpoints
- White-label ready
- Phone support
All plans include comprehensive documentation and SDKs
Questions? Talk to our team