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Birth chart calculator

A tropical chart wheel and houses, plus sidereal positions, lagna, Moon nakshatra and dashas, all computed with Swiss Ephemeris.

Leave blank if unknown. Rising sign and birth-time houses will be omitted.

Choose a listed city for its birth-date time zone, or enter coordinates and set the offset yourself.

Your birth details go to our calculation API over HTTPS and are not saved in a server-side birth profile. Carrying details into another tool is optional and uses temporary storage in this browser tab. Privacy and downloads.

What this calculator returns

The result plots a tropical chart wheel, lists positions, major aspects with orbs and available Placidus cusps, and adds Lahiri sidereal positions, nakshatra and current dasha periods. You can copy a tailored AI prompt, download the result or explicitly carry the inputs into another calculator.

Inputs and accuracy

Birth time is required for angles and houses. Without it, positions use local noon and natal houses are omitted. Where Placidus cannot be calculated, planetary results remain available without substitute houses or angles.

Calculation method

Planetary longitudes come from Swiss Ephemeris. Tropical positions use the seasonal zodiac; Vedic positions use Lahiri ayanamsa. Read the exact calculation method and limitations.

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