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Free Juno sign calculator: find your Juno sign, house, and aspects to reveal what you truly need in a committed relationship and the kind of partner you're drawn to marry.
Juno is asteroid number 3, discovered in 1804 and named for the Roman goddess of marriage, Hera to the Greeks. In astrology it describes the terms of commitment: what you need before you can promise yourself to someone, the partner you keep choosing for the long term, and how you behave once the promise is made. It is not attraction, which belongs to Venus, and it is not the partnership arena in general, which belongs to the 7th house. Juno is the contract underneath the feeling. Its orbit takes about 4.4 years, fast enough to be personal and slow enough to sit in one sign for months.
Your Juno sign describes the terms: what a bond has to feel like, what you cannot do without, and how you behave once you are in. Your Juno house describes the arena: which part of life the promise gets negotiated in and where you tend to meet the people who matter. The sign comes from your birth date. The house comes from the exact minute and place, because the houses turn through the whole zodiac once a day. A Juno in Scorpio in the 10th house and a Juno in Scorpio in the 4th want the same depth in two very different rooms.
Juno's orbit is stretched, so it lingers near its far point and rushes past its near point. We cast 106,656 random birth instants, four for every day from 1940 to 2012, with the same ephemeris engine as this calculator, and counted where Juno sat.
The short versions. Your result above carries the full sentence for your own sign and house, and the tight aspects that change it.
The house is the arena where the promise gets negotiated and where you tend to meet the people who matter. It needs your birth time.
A tight aspect from Juno to the Sun, Moon, Venus or Mars (under 5 degrees here, closer for the strongest lines) means commitment cannot stay in its own lane. The calculator lists every tight aspect with its exact orb, and the rates below come from the same census.
Transiting Juno comes back to its natal degree about every 4.4 years. Astrologers read the return as a season when the terms get renegotiated: relationships begin, deepen, end or change shape, and single people often meet the question of what they actually want. Because Juno turns retrograde, a return can arrive as one pass or as three passes across several months. This calculator solves your next return from the ephemeris, to the day, with every pass listed, for the five years ahead.
Juno keeps a sign for a median of 80 days, so the date alone almost always settles the sign; only on the handful of days a year when Juno crosses a boundary does the hour matter. The house needs the time and the place, because the house cusps move about one degree every four minutes. An aspect to the Moon also needs the time, since the Moon travels roughly 13 degrees a day. Without a time the calculator casts a noon chart, names the sign and degree, and waits for the time before naming a house.
Updated September 2026. Every rate on this page comes from one census run on the same Swiss Ephemeris engine that casts your chart: 106,656 random birth instants, four for every calendar day from 1940 to 2012, with Juno compared with the Sun, Moon, Venus and Mars using the same aspects and orbs the calculator uses (a match counts when its orb is under 5 degrees; "within 3 degrees" means exactly that). Sign shares are shares of those instants, which treats every day as equally likely for a birth. The sign-stay figures come from a daily sweep of Juno's sign from 1930 to 2030. Rerunning the script reproduces every figure.
Your Juno sign is where asteroid Juno sat in the zodiac on your birth date. Juno keeps a sign for a median of 80 days, so the date usually settles it; the calculator reads it exactly from the ephemeris, adds the degree and the house, and lists any tight aspect to your Sun, Moon, Venus or Mars.
It depends on your exact birth time and place. Enter them above and the result names your Juno house with the sign and degree, plus any tight aspects to your Sun, Moon, Venus or Mars. Without a time the calculator casts a noon chart and names the sign but not the house.
Your Juno sign describes what you need in order to feel secure enough to commit: the qualities you look for in a long-term partner and what makes a relationship last for you. A fire Juno needs momentum and independence inside the bond; an earth Juno needs steadiness and a life built together; an air Juno needs a mind and room to breathe; a water Juno needs emotional depth and safety. It is the partner you keep choosing.
Juno spends far longer in some signs than others because its orbit is stretched. In 106,656 random birth instants from 1940 to 2012, cast with this calculator's engine, Juno sat in Scorpio 13.5% of the time and in Sagittarius 12.8%, but in Taurus only 4.5%, Gemini 5.1%, Cancer 5.5% and Aries 5.8%. A Taurus Juno is about one birth in 22; a Scorpio Juno about one in seven.
Usually, yes. Juno stays in one sign for a median of 80 days (from 6 days to 335 in a daily sweep from 1930 to 2030), so the date settles the sign except on the few days a year when Juno is crossing a boundary. The house, and any aspect to your Moon, do need the time: the houses turn through the whole zodiac each day and the Moon moves about 13 degrees a day. Without a time the calculator casts a noon chart, names the sign and degree, and asks for the time before naming a house.
Marriage and one-to-one partnership sit front and center. People with Juno in the 7th tend to define themselves through the people they choose, meet significant partners through open one-to-one situations, and feel the terms of commitment most sharply inside the relationship itself rather than around it. It is the most literal placement for the marriage asteroid.
A Juno return is the moment transiting Juno comes back to the exact degree it held when you were born, about every 4.4 years. Because Juno turns retrograde, a return can arrive in one pass or three passes spread over several months. Astrologers read it as a season when the terms of commitment get re-asked: a relationship deepens, ends or gets renegotiated. The calculator solves your next return dates from the ephemeris, to the day, for the five years ahead.
Venus is how you flirt, attract and enjoy love day to day: the spark. Juno is what you need for a committed, lasting partnership: the staying power. Two people can have magnetic Venus chemistry yet clash on Juno, because Juno governs the promises, the security and the long-term terms that make a relationship feel like home. This calculator also flags any tight aspect between your Juno and your Venus, Mars, Sun or Moon.
It describes what you need in order to commit and the kind of partner you tend to choose for the long term, not a specific person. Astrologers often read the Juno sign as the qualities of a lasting partner and the Juno house as where you tend to meet them. Treat it as a description of your terms; the reading built from your full chart is where those terms meet the rest of you.
About one birth in five (21.2% in the same census) has Juno retrograde. The traditional reading is that the terms of commitment were set early, often from watching the partnerships around you, and get rewritten from the inside after a first serious bond. It is a nuance, not a verdict, and the calculator marks it when it applies.
About 39% of charts have no tight aspect between Juno and the Sun, Moon, Venus or Mars within the orbs this calculator uses. It means commitment runs on its own track, shaped by the sign and the house rather than argued with by another planet. The pattern is usually quieter and more consistent, and easier to miss until it repeats.
The house your Juno sits in shows the life area where commitment and partnership themes concentrate: where you tend to meet significant partners and where the real work of bonding plays out. Juno in the 7th house puts marriage and one-to-one relationships front and center, Juno in the 10th can tie your closest bond to career and public life, and Juno in the 4th makes home and family the terms of the promise.