---
title: "Numerology Compatibility Calculator"
slug: "numerology-compatibility-calculator"
canonical_url: "https://mahadasha.com/numerology-compatibility-calculator"
type: "calculator"
description: "Compare two people across Life Path, Soul Urge, Expression, Personality and Mulank, returning a weighted percentage, the friend/neutral/enemy relationship on each axis, the ruling grahas involved, and a composite number for the relationship itself."
---

# Numerology Compatibility Calculator

Compare two people across Life Path, Soul Urge, Expression, Personality and Mulank, returning a weighted percentage, the friend/neutral/enemy relationship on each axis, the ruling grahas involved, and a composite number for the relationship itself.

The relationship matrix is symmetric by construction, so swapping the two people cannot change the score. Weights are renormalised over the axes actually available, so a date-only comparison is scored honestly rather than penalised for the name numbers it could not compute.

## Inputs

Two people, each with:

- **birth_date** — date of birth (`YYYY-MM-DD`). **No time, place or timezone required.**
- **name** *(optional)* — full name at birth. Adds Soul Urge, Expression and Personality.
- **label** *(optional)* — display name in the response.

## Programmatic access (for AI agents)

This calculator is backed by a JSON API — agents should call it directly instead of the HTML form:

- **Endpoint:** `POST https://mahadasha.com/api/v1/numerology/compatibility`
- **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

Refer to the OpenAPI schema above for the exact request body and response shape of `https://mahadasha.com/api/v1/numerology/compatibility`.

> Human UI: [Numerology Compatibility Calculator](https://mahadasha.com/numerology-compatibility-calculator)