--- title: "Numerology: Calculators, Systems and API" canonical_url: "https://mahadasha.com/numerology" type: "index" description: "Index of every numerology calculator on Mahadasha.com across the Pythagorean, Chaldean, Vedic (Ank Jyotish) and Lo Shu systems." --- # Numerology: Calculators, Systems and API Numerology on this site computes **Pythagorean and Chaldean side by side** and reports where they disagree, rather than picking one and hiding the other. ## The four systems - **Pythagorean** — letters valued 1–9 in alphabetical order. The Western default. - **Chaldean** — letters valued by sound. **Never assigns 9.** The system used by professional numerologists in India, and the one the name-correction market runs on. - **Vedic (Ank Jyotish)** — numbers mapped to grahas: 1 Sun, 2 Moon, 3 Jupiter, 4 Rahu, 5 Mercury, 6 Venus, 7 Ketu, 8 Saturn, 9 Mars. - **Lo Shu Grid** — the digits of the date of birth placed in a 3×3 magic square. ## Method decisions worth knowing - The **Life Path** is computed by reducing month, day and year *separately* and then summing. This is not the same as summing every digit of the date string; the two disagree on roughly one date in seven, wherever a master number is involved. - **Master numbers** 11, 22 and 33 are held at core positions only. A Personal Year of 11 is a 2. - **Karmic debts** 13, 14, 16 and 19 are read off any intermediate total. - **Karmic Lessons, Hidden Passion and Planes of Expression are Pythagorean-only**, because Chaldean assigns no letter the value 9. - The **Personal Year** runs with the calendar year, not the birthday. ## Calculators - https://mahadasha.com/numerology-calculator (Markdown twin: `/numerology-calculator.md`) - https://mahadasha.com/life-path-number-calculator (Markdown twin: `/life-path-number-calculator.md`) - https://mahadasha.com/name-numerology-calculator (Markdown twin: `/name-numerology-calculator.md`) - https://mahadasha.com/lo-shu-grid-calculator (Markdown twin: `/lo-shu-grid-calculator.md`) - https://mahadasha.com/mulank-bhagyank-calculator (Markdown twin: `/mulank-bhagyank-calculator.md`) - https://mahadasha.com/personal-year-calculator (Markdown twin: `/personal-year-calculator.md`) - https://mahadasha.com/numerology-compatibility-calculator (Markdown twin: `/numerology-compatibility-calculator.md`) ## Endpoints None of these require a birth time, a birth place or coordinates. A date of birth and optionally a name is the whole payload. - `POST https://mahadasha.com/api/v1/numerology/core` — every core number, both systems (free) - `POST https://mahadasha.com/api/v1/numerology/cycles` — personal year/month/day, pinnacles, challenges (free) - `POST https://mahadasha.com/api/v1/numerology/forecast` — nine-year strip and day-by-day month (free) - `POST https://mahadasha.com/api/v1/numerology/lo-shu` — grid, arrows, Kua number (free) - `POST https://mahadasha.com/api/v1/numerology/compatibility` — two-person comparison (free) - `POST https://mahadasha.com/api/v1/numerology/name-analysis` — one name scored, working shown (free) - `POST https://mahadasha.com/api/v1/numerology/number-audit` — mobile, vehicle, house, office, account (free) - `POST https://mahadasha.com/api/v1/numerology/transliterate` — Indic script to Latin suggestion (free) - `GET https://mahadasha.com/api/v1/numerology/reference` — number dataset and compatibility matrix (free) - `POST https://mahadasha.com/api/v1/numerology/name-correction` — ranked respellings (auth, 2 credits) - `POST https://mahadasha.com/api/v1/numerology/baby-name` — Nakshatra syllable × Chaldean value (auth, 2 credits) - `POST https://mahadasha.com/api/v1/numerology/business-name` — brand vs industry and founder (auth, 2 credits) - `POST https://mahadasha.com/api/v1/numerology/fusion` — numerology cross-checked against the natal chart (auth, 2 credits) ## Programmatic access (for AI agents) Every calculation on this site is available as JSON. Agents should call the API rather than scraping the HTML UI: - **Base URL:** `https://mahadasha.com/api/v1` - **Auth:** JWT Bearer token, register at `https://mahadasha.com/api/v1/auth/register` - **OpenAPI schema:** https://mahadasha.com/api/v1/openapi.json - **API catalog:** https://mahadasha.com/.well-known/api-catalog - **MCP server card:** https://mahadasha.com/.well-known/mcp/server-card.json - **Site summary for LLMs:** https://mahadasha.com/llms.txt - **Markdown sitemap:** https://mahadasha.com/sitemap-markdown.xml > Human UI: [Numerology](https://mahadasha.com/numerology)