Birth Chart Calculator

Get your free natal chart — every planet's zodiac sign and degree, your ascendant and houses, and a downloadable chart wheel. Fast, private, and your details never leave your device.

Needed for the ascendant and houses. Leave blank if unknown — planet signs still work.
Or enter latitude and longitude manually below (positive = North / East, negative = South / West).
Auto-estimated from the city. Adjust for daylight saving if you know it applied.
PlanetSign & degreeHouse

What your placements suggest

About the accuracy: planetary positions are computed in your browser using bundled low-precision astronomical formulae (Meeus / JPL Keplerian elements). They are typically accurate to within about one degree for dates between roughly 1900 and 2100 — plenty for identifying signs, degrees and houses, but not a substitute for a full-precision ephemeris for exact professional work. The ascendant and houses depend on an accurate birth time and time zone, so double-check those if the rising sign looks off.
For reflection and entertainment only. Astrology is a symbolic, traditional system, not a science; the interpretations here are gentle prompts to think with rather than facts, predictions, or medical, psychological or financial advice.

How to use the free birth chart calculator

  1. Enter your date of birth, and your time of birth if you know it — the time unlocks your ascendant (rising sign) and houses.
  2. Choose your birth city from the list, or type the latitude and longitude directly for anywhere in the world.
  3. Check the time-zone offset (it is estimated from your city) and adjust it if daylight saving was in effect.
  4. Click "Calculate my birth chart" to see every planet's sign and degree, your ascendant and houses, and the chart wheel.
  5. Read the short interpretation for each placement, and download the chart wheel as a PNG to keep or share.

Why use ZillaKit's free natal chart calculator?

A birth chart, or natal chart, is a snapshot of the sky at the exact moment and place you were born, showing where each planet sat against the twelve zodiac signs. This free birth chart calculator works out the geocentric position of the Sun, Moon, Mercury, Venus, Mars, Jupiter, Saturn, Uranus, Neptune and Pluto entirely in your browser using bundled astronomical algorithms, so nothing you enter is ever uploaded, logged or stored — your birth details never leave your device. When you add a birth time it also calculates your ascendant (rising sign) and places every planet into one of the twelve houses using the whole-sign system, then draws a clean cyan-on-dark chart wheel you can download as a PNG. Alongside the positions you get a concise, reflective interpretation for each planet in its sign, written as a warm prompt for self-reflection rather than a prediction. Whether you are searching for a free natal chart, curious about your rising sign, or simply want to explore your birth chart without signing up for anything, this calculator gives you an accurate-enough, private and genuinely free reading in seconds. As with all astrology here, it is offered for reflection and entertainment — a symbolic lens for thinking about yourself, not a forecast of your future.

Frequently asked questions

What is a birth chart (natal chart)?

A birth chart is a map of where the Sun, Moon and planets were positioned in the zodiac at the moment you were born, seen from your birthplace. Astrologers read it as a symbolic portrait for reflection.

Do I need my exact birth time?

Not for the planet signs — those only need the date. But your ascendant (rising sign) and the houses move quickly and do need an accurate birth time and time zone to be correct.

What is an ascendant or rising sign?

The ascendant is the zodiac sign that was rising on the eastern horizon at your birth. It sets the layout of the houses and is traditionally read as your outward manner and first impression.

How accurate is this birth chart calculator?

Planet positions are computed with bundled low-precision formulae accurate to roughly one degree for dates between about 1900 and 2100 — ample for signs, degrees and houses, though not a full professional-grade ephemeris.

Is my birth information private?

Yes. Everything is calculated locally in your browser with plain JavaScript. Your date, time and location are never sent to a server, logged or saved anywhere.

Is astrology scientifically proven?

No. Astrology is a symbolic, traditional system, not a science. This tool is offered purely for reflection and entertainment, and makes no factual, medical or predictive claims.