Free Part of Fortune Calculator
Enter your birth details to find where luck and material well-being play out in your chart.
What is the Part of Fortune?
The Part of Fortune is the most important Arabic lot in Hellenistic astrology. It represents your body, material circumstances, health, and the conditions life gives you regardless of intention. Also called the Lot of Fortune, it is the complement of the Lot of Spirit: Fortune is what happens to you, Spirit is what you choose to do about it.
In ancient practice, Fortune was linked to the Moon and the physical body, while Spirit was linked to the Sun and the mind. Vettius Valens used releasing from Fortune to time questions about health, livelihood, and bodily circumstances. Knowing your Part of Fortune sign and house tells you how and where material luck naturally shows up in your life. Read the full Lot of Fortune guide for deeper sign-by-sign and house-by-house interpretations.
How the calculator works
The Part of Fortune formula depends on whether you were born during the day or at night. For day charts (Sun above the horizon): Ascendant + Moon - Sun. For night charts (Sun below the horizon): Ascendant + Sun - Moon. This is the reverse of the Lot of Spirit formula, which swaps the luminaries.
The calculator determines day or night automatically by checking whether the Sun was above or below the horizon at your birth time and location. It then applies the correct formula and places the result in the zodiac, giving you both the sign and house where your Part of Fortune falls.
Understanding your result
The sign your Part of Fortune occupies shows the style of your material luck. A Fortune in Aries attracts opportunity through bold action; a Fortune in Pisces draws it through intuition and creative surrender. The sign colors how circumstances tend to break in your favor.
The house your Part of Fortune occupies shows which area of life receives the most material benefit. Fortune in the 10th house concentrates luck in career and public standing; Fortune in the 4th house roots it in home and family. The condition of the lot ruler (the planet ruling the Fortune sign) matters greatly for how reliably that luck delivers. For the complete breakdown of every sign and house, read the full Lot of Fortune guide.
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Frequently Asked Questions
What is the Part of Fortune in astrology?
The Part of Fortune (also called the Lot of Fortune) is a calculated point in your birth chart that represents material circumstances, bodily health, and what life hands you regardless of your choices. It is the most important Arabic lot in Hellenistic astrology and the complement of the Lot of Spirit, which represents willpower and conscious agency.
How is the Part of Fortune calculated?
The formula depends on whether you were born during the day or night. For day charts: Ascendant + Moon - Sun. For night charts: Ascendant + Sun - Moon. This is the reverse of the Lot of Spirit formula. The day/night distinction is determined by whether the Sun is above or below the horizon at birth.
What is the difference between Part of Fortune and Lot of Spirit?
The Part of Fortune governs material circumstances, the body, health, and physical conditions. The Lot of Spirit governs the mind, willpower, and conscious decisions. Fortune is the hand you are dealt; Spirit is how you play it. In Hellenistic astrology, Fortune was linked to the Moon and body, Spirit to the Sun and mind.
Do I need an exact birth time for the Part of Fortune?
Yes. The Part of Fortune formula requires the Ascendant, which changes sign roughly every two hours. Even a small error in birth time can shift the Ascendant and the resulting lot to a different sign and house, producing unreliable results.
What does my Part of Fortune sign mean?
The sign your Part of Fortune occupies describes the style in which material luck and favorable circumstances tend to arrive. For example, Fortune in Taurus attracts steady, accumulative prosperity, while Fortune in Sagittarius draws luck through risk, travel, and following conviction.
How is the Part of Fortune used in zodiacal releasing?
Zodiacal releasing from the Lot of Fortune is the primary form of the technique. It divides life into chapters based on the Fortune sign, timing periods of peak activity, visibility, and material change. Vettius Valens used releasing from Fortune for questions about health, livelihood, and bodily circumstances.