Jupiter sign calculator: what is my Jupiter sign?

Jupiter is the largest planet, and astrology has long called it the great benefic. It stands for growth, belief, generosity and the sense that things will work out: where you expand, what you trust and how you share. Your Jupiter sign is the sign it stood in when you were born. It shows the style of your optimism and where you tend to reach too far or not far enough.

Jupiter circles the zodiac in about 12 years and stays in a sign for roughly a year, so everyone born in the same twelve-month stretch shares it. That is why the house matters on this page: it turns a shared sign into a personal placement.

Jupiter moves into a new sign about once a year and returns to the same sign after roughly 12 years (11.86, to be exact). Jupiter therefore comes back to your Jupiter sign around ages 12, 24, 36, 48 and 59, the times astrologers call a Jupiter return and read as a fresh start in what you are growing toward.

To see where Jupiter is today against your own placement, the transit chart calculator lays the current sky around your birth chart. A year with Jupiter back in your birth sign is often described as a good year to act on what you believe in.

Jupiter is retrograde for about four months of every thirteen, so roughly three people in ten are born with it. Seen from Earth the planet seems to move backward while our planet overtakes it, which the retrograde entry explains. The calculator marks it with ℞ whenever Jupiter was moving backward on your birth date.

Astrologers read a natal retrograde Jupiter as growth that happens inwardly first: you work out what you believe in private before it shows outside. It describes timing and style, and the sign still tells you where the growth happens.

In the traditional scheme Jupiter rules Sagittarius and Pisces and is exalted in Cancer. In Sagittarius it is the teacher and traveler, in Pisces the voice of faith and compassion, in Cancer the one who feeds others. It is in detriment in Gemini and Virgo, where it is pulled toward detail and variety, and in fall in Capricorn, where caution slows its optimism.

Traditional astrologers called a strong Jupiter fortunate, and modern readings keep that idea: it marks where support is easier to find. What you do with it is up to you. The short readings above give the flavor of each sign.

With a birth time and place the calculator gives the house Jupiter was in, Placidus by default, or whole sign, Koch and equal houses one tap away. The next section reads Jupiter in each of the twelve houses. Without a time the house stays open.

Aspects add detail. Jupiter close to the Sun or Moon tends to lend that part of you an easy confidence, while hard aspects ask you to watch for excess. The birth chart calculator shows Jupiter with every aspect it makes.

Your Jupiter house is the numbered house, from 1 to 12, that Jupiter stood in at the moment you were born. The houses are counted counterclockwise from the Ascendant, and the whole wheel turns once a day, so the number depends on your birth time and place. Add the time above and the result shows the house next to the sign and degree.

Traditionally, the house shows where Jupiter's growth and generosity tend to show up. In the 1st house it is read as an open, generous manner and a large presence. In the 2nd, growth through earning and what you value. In the 3rd, through learning, writing, siblings and short trips. In the 4th, through home, family and roots. In the 5th, through creativity, romance, play and children. In the 6th, through daily work, service and health habits.

In the 7th, through partners and close agreements. In the 8th, through shared resources, intimacy and deep change. In the 9th, through travel, higher study and belief. In the 10th, through career and public standing. In the 11th, the house Hellenistic astrologers called Good Spirit and Jupiter's joy, through friends, groups and hopes for the future. In the 12th, through retreat, compassion and inner life, a placement often read as quiet help in hard times.

If your birth time is only approximate, the sign almost always stays the same, but the house can change when Jupiter sat close to the line between two houses. In the rising sign calculator you can try a few nearby times and watch the Ascendant move.

Jupiter's position comes from the VSOP87 planetary theory, corrected for the time light takes to reach Earth and for the nutation of Earth's axis, which gives the apparent longitude astrologers use. In our checks it agrees with NASA JPL Horizons to within about one arcsecond on test dates between 1923 and 2077. The tool covers 1900 to 2099.

Jupiter moves at most about a quarter of a degree a day, so it rarely changes sign on a birthday. When it does, the calculator shows both signs and the time of the changeover, and a birth time names the right one.

Your birth date and birthplace are enough for the sign. The birth time adds the house. The tool is free and needs no account.

From here, the birth chart calculator draws Jupiter among your other planets, the Saturn sign calculator looks up the planet that balances Jupiter in traditional astrology, and the transit chart shows where Jupiter stands now.