The Part of Fortune, also called Pars Fortuna or the Lot of Fortune, is the most celebrated of the Arabic Parts in astrology. It is a mathematical point calculated from the positions of your Sun, Moon, and Ascendant — the three most important elements of any birth chart. Where it falls by sign and house reveals where you naturally attract joy, luck, and worldly success.
Unlike planets, the Part of Fortune is not a celestial body — it is a sensitive point derived from the relationship between your conscious self (Sun), emotional self (Moon), and the way the world meets you (Ascendant). When these three are in harmony, fortune flows. The Part of Fortune marks exactly where that harmony concentrates in your life.
The Part of Fortune is the most famous member of a broader family known as the Arabic Lots(originally the Hellenistic Lots — the Arabic name came later). Classical astrologers catalogued roughly a hundred of them, each calculated from a specific combination of planets and chart angles. Alongside the Lot of Spirit (the solar counterpart this calculator also returns), practitioners have historically tracked the Lot of Eros (desire), Lot of Necessity (constraint), Lot of Marriage, Lot of Exaltation, and many more. Of all of them, the Lot of Fortune endures as the one almost every tradition — Hellenistic, Arabic, Medieval, and modern — still uses.
What Your Part of Fortune Reveals
Natural Luck: The area of life where good fortune finds you with the least effort
Joy & Fulfilment: What genuinely makes you happy, beyond what society expects
Worldly Success: The style and domain of your material prosperity
Health & Vitality: In traditional astrology, the Part of Fortune also relates to physical wellbeing
“The Lot of Fortune signifies everything that concerns the body, and what one does through the course of life. It becomes the support of other Lots.”
— Vettius Valens, Anthology, Book II (2nd century CE)
How the Part of Fortune Is Calculated
The formula depends on whether you were born during the day or night:
Day Chart (Sun above horizon)
Ascendant + Moon − Sun
Night Chart (Sun below horizon)
Ascendant + Sun − Moon
Our calculator automatically detectswhether you have a day or night chart based on the Sun's position relative to the horizon at your birth time and location — and shows you the formula with your actual degree numbers so you can verify the result yourself.
“The Part of Fortune represents the integration of the three most personal points in the chart. Where the Sun is your spirit, the Moon your soul, and the Ascendant your body, the Part of Fortune is where all three come together.”
— Robert Hand, Night & Day: Planetary Sect in Astrology
“Think of your Part of Fortune as the intersection where your conscious purpose, emotional instincts, and worldly presence all point in the same direction. When you live from that place, effort decreases and fulfilment increases — that's fortune in its truest sense.”
— Taro's Tarot, tarostarot.com
Part of Fortune in Every Sign
♈
Fortune in Aries
Embrace risk, be first, and channel your restless energy into projects where your individuality is an asset. Your luck follows decisive action.
Tarot: The Emperor
♉
Fortune in Taurus
Invest in what endures — relationships, property, skills. Avoid shortcuts. Your luck grows like compound interest: slowly, then all at once.
Tarot: The Hierophant
♊
Fortune in Gemini
Follow your curiosity fearlessly. Write, teach, connect people. Your luck multiplies every time you share what you know.
Tarot: The Lovers
♋
Fortune in Cancer
Build something that shelters others — a family, a community, a home. Your luck is tied to emotional authenticity and the bonds you nurture.
Tarot: The Chariot
♌
Fortune in Leo
Step into the spotlight — not for ego, but because your full expression lifts everyone around you. Your luck follows your willingness to be visible.
Tarot: Strength
♍
Fortune in Virgo
Master a craft. Be useful. Your luck appears when you focus on making something — a skill, a process, a body of work — as excellent as it can possibly be.
Tarot: The Hermit
♎
Fortune in Libra
Partner wisely — in love and business. Surround yourself with beauty. Your luck is amplified by the quality of your relationships.
Tarot: Justice
♏
Fortune in Scorpio
Don't fear the dark — your treasure is buried in it. Invest in deep intimacy, shared ventures, and anything that requires you to be completely honest.
Tarot: Death
♐
Fortune in Sagittarius
Say yes to the journey. Travel, study, teach, publish. Your luck expands in direct proportion to the breadth of your world.
Tarot: Temperance
♑
Fortune in Capricorn
Choose a mountain and climb it. Don't rush, don't compare. Your luck rewards the work nobody else is willing to do.
Tarot: The Devil
♒
Fortune in Aquarius
Be the outsider. Build for the future, not the present. Your luck follows your willingness to be different in service of something bigger.
Tarot: The Star
♓
Fortune in Pisces
Let go of control. Your luck flows through dreams, art, healing, and acts of selfless devotion. The less you grip, the more comes to you.
Tarot: The Moon
Part of Fortune in Every House
1
The Self
Self-development, personal branding, physical vitality, and the courage to put yourself first.
2
Resources & Values
Income, savings, material comfort, personal values, and the things you own that own you back.
3
Communication & Learning
Short trips, siblings, neighbours, early education, and any form of daily communication.
4
Home & Roots
Real estate, ancestry, parents, inner emotional life, and the place you call home.
5
Creativity & Joy
Creative projects, romance, children, hobbies, performance, and anything that brings pure joy.
6
Service & Health
Daily habits, wellness, employment, pets, routines, and the dignity of useful work.
7
Partnership
Marriage, contracts, legal matters, open enemies, and learning to balance your needs with another's.
8
Transformation & Shared Resources
Other people's money, insurance, taxes, inheritance, sexuality, and psychological rebirth.
9
Expansion & Wisdom
Universities, long-distance travel, religion, philosophy, law, and the search for meaning.
10
Career & Public Standing
Professional status, achievements, your boss, government, and the mark you leave on the world.
11
Community & Vision
Friends, social circles, humanitarian causes, technology, and long-term hopes and wishes.
12
Spirituality & Surrender
Isolation, hospitals, prisons, dreams, secrets, karma, and the dissolution of ego.
Part of Fortune vs Part of Spirit
Part of Fortune
Where luck, joy, and material success find you. What you receive from the world when you align with your nature. Tied to the Moon — your instinctive, receptive self.
Part of Spirit
Where you create meaning through conscious effort. What you give to the world by living your purpose. Tied to the Sun — your active, creative self.
The Arabic Lots: Classical Formulas
The Lot of Fortune is the most famous of a broader family. Classical astrologers — Hellenistic, then Arabic, then Medieval European — catalogued dozens of Arabic Lots (also called the Hellenistic Lots; in the Hermetic tradition they are the Hermetic Lots). Each follows the same pattern: Ascendant + one point − another, with day and night formulas reversed. Below are six of the most enduring.
Lot of Spirit
Day: Ascendant + Sun − Moon Night:Ascendant + Moon − Sun
Your conscious purpose — what you are meant to give. The active counterpart to Fortune. Returned alongside Fortune by this calculator.
Natural point of glory. Where your reputation shines and your honour is most visible to the world.
Of all the Lots, Fortune remained central across every tradition. The others drifted in and out of use — valuable for specific questions (when will I marry? where does courage meet me?) but rarely given the weight of Fortune and Spirit. That is why this calculator returns both: the pair the entire tradition agreed mattered most.
Frequently Asked Questions
What is the Part of Fortune in astrology?
The Part of Fortune (Pars Fortuna or Lot of Fortune) is a calculated point in your birth chart that represents where you naturally find joy, luck, and worldly success. It combines your Sun, Moon, and Ascendant — the three most important points in your chart — into a single placement.
How is the Part of Fortune calculated?
For day charts (Sun above the horizon): Ascendant + Moon − Sun. For night charts (Sun below the horizon): Ascendant + Sun − Moon. The result gives you the zodiac sign and degree of your Part of Fortune.
Why are there two formulas — day and night?
The ancient astrologers who developed the Arabic Parts recognised that the relationship between the Sun and Moon shifts depending on whether you were born during the day or night. In day charts the Moon is the "light of the sect in favor," and in night charts the Sun is. The formula adjusts to honour this.
Do I need my exact birth time?
Yes. The Part of Fortune depends on the Ascendant, which changes zodiac sign approximately every two hours. Without an accurate birth time, the Ascendant — and therefore the Part of Fortune — could be in the wrong sign entirely.
What is the difference between Part of Fortune and Part of Spirit?
The Part of Fortune (Lot of Fortune) shows where luck, joy, and material success find you — what you receive. The Part of Spirit (Lot of Spirit) uses the inverted formula and shows your soul's purpose — what you are meant to give. Together they reveal the balance between receiving and creating.
What does my Part of Fortune house mean?
The house placement shows the area of life where your fortune concentrates. For example, Part of Fortune in the 7th house suggests luck through partnerships and marriage, while in the 10th house it points to career success and public recognition.
Can the Part of Fortune predict when I will get lucky?
The Part of Fortune shows where your potential for luck and joy exists, not when it will activate. However, transits to your Part of Fortune — especially from Jupiter or the Sun — can signal periods when that potential is more likely to manifest.
Is the Part of Fortune the same as the Lot of Fortune?
Yes. "Lot of Fortune" is the original Hellenistic Greek name, while "Part of Fortune" became common in medieval Arabic and later Western astrology. They refer to the same calculation and the same point in the chart.
How important is the Part of Fortune compared to planets?
The Part of Fortune is not a planet — it is a mathematical point. Most astrologers consider it a secondary factor after the major planets, but it is the most significant of the Arabic Parts and can add valuable nuance to a chart interpretation, especially regarding career and material wellbeing.