Astrocartography Calculator

Astrocartography Calculator is a web-based locational astrology tool that maps your natal birth chart onto the world, showing where each planet's energy is strongest across different geographies. It targets digital nomads, relocation planners, professional astrologers, and astrology students who want precise planetary line data without paying for desktop software.

What It Does

The tool calculates four lines per planet — Ascendant (ASC), Descendant (DSC), Midheaven (MC), and Imum Coeli (IC) — using the Swiss Ephemeris library, the same calculation engine behind most professional astrology software. Line placement accuracy is cited at 1 mile, and the ephemeris covers dates from 3000 BCE to 3000 CE, which makes it usable for historical research as well as personal charts.

Once a chart is generated, users interact with a global map that supports satellite, terrain, and political boundary views. Clicking any planetary line or power spot — an intersection where two or more lines cross — triggers an AI interpretation covering how that location might affect career, relationships, health, and creativity. The tool also flags whether a location suits long-term residence, short visits, work, or study.

Core Workflow

Generating a chart requires a birth date, time, and city. Birth time matters: planetary lines (Sun, Moon, Venus, Mars, etc.) display without it, but angular lines (ASC, DSC, MC, IC) require a precise birth time. The system handles historical timezone data and daylight saving time changes automatically, which reduces a common source of chart errors for people born before modern timezone standardization.

From there, users can filter which planetary lines appear on the map — showing only Jupiter and Sun lines for career research, or hiding Saturn and Pluto lines to focus on growth-oriented locations. Charts can be saved to history and multiple charts can be loaded simultaneously, which is useful for couples, families, or teams comparing planetary line overlaps before a joint move.

Finished charts export as watermark-free PNG, PDF, or SVG files cleared for personal and commercial use.

Who Uses It

The tool fits a few distinct user types. Professional astrologers use it as a free alternative to paid desktop software, generating client charts and exporting PDFs for consultations. Digital nomads use it to evaluate candidate cities against their Jupiter, Sun, or Venus lines before committing to a move. Relocation consultants use the multi-person comparison feature to advise couples or families. Astrology students use it to learn locational astrology concepts interactively without needing expensive subscriptions.

Entrepreneurs evaluating cities for business expansion also show up in the stated use cases — looking at Jupiter MC or Sun MC lines as indicators of visibility and opportunity in a given location.

Pricing and Limits

The free tier is genuinely open: unlimited chart generation, basic planetary line explanations, and an interactive map require no registration and carry no usage caps. The constraint is on AI interpretation — the free plan includes 10 credits, enough for one AI question.

Paid plans are one-time purchases with no subscription or auto-renewal. The Standard plan costs $9.90 for 1,000 credits (roughly 100 AI questions). The Professional plan is $18.90 for 3,000 credits and adds priority AI response speed, export of AI chat history as a text file, and access to advanced lines including Chiron and Lilith.

One design constraint worth noting: the AI only interprets cities that fall on or near your planetary lines. If a city isn't connected to your chart, the AI won't speculate about it — a deliberate scope limitation rather than a bug.

Fit Assessment

For users who primarily need accurate chart generation and map exploration, the free tier covers the full workflow. The paid plans make sense for anyone doing serious relocation research across multiple cities or using the tool professionally with clients. The one-time pricing model is a practical differentiator against subscription-based astrology platforms.