Birth chart calculator: your full sky map, free
Sun, Moon, rising sign, ten planets, and twelve houses — calculated on the Swiss Ephemeris, explained without jargon.
Your free birth chart
Sun, Moon, rising sign, and all ten planets — calculated in seconds from the Swiss Ephemeris.
How to read your result
Start with your "big three": the Sun — your essence, what moves you; the Moon — your emotions, what you need to feel safe; the rising sign — your first impression, the door the world meets you through. Three different signs, usually — and that's precisely what explains your complexity.
Then each planet tells one domain: Mercury — how you think and speak, Venus — how you love and enjoy, Mars — how you act and want. The housesshow where, in which life area, those energies play out most. A retrograde planet isn't "broken": its theme simply runs more inward, that's all.
What the chart doesn't give: guaranteed dates, fated outcomes, diagnoses. The stars show tendencies and windows of opportunity — the decisions stay yours. That's our reading rule, on every page of this site.
What each planet tells you
Your chart places ten bodies in the zodiac. Each governs one precise domain of your personality:
And the twelve houses?
If planets say what and signs say how, the houses say where: in which sphere of life each energy expresses itself most. The 1st house is you and your image; the 2nd, money and resources; the 3rd, communication and siblings; the 4th, home and roots; the 5th, creativity and romance; the 6th, daily work and health; the 7th, partnership; the 8th, crises and transformations; the 9th, travel and meaning; the 10th, career and calling; the 11th, friendships and projects; the 12th, the inner life and what stays hidden.
A planet takes the color of its house: the same Mars pushes entrepreneurship in the 10th and defends the family in the 4th. The house grid depends on your birth time — it's what makes your chart genuinely personal.
Natal chart, solar return, transits: what's the difference?
The natal chart — the one you calculate here — is your photograph of the sky at birth: it never changes and is calculated once. The solar returnis a chart drawn each year for the exact moment the Sun returns to its natal position, around your birthday: astrologers read it for the year's tone. And transitscompare today's sky to your natal chart — astrology's weather report. Everything starts from the natal chart: without it, neither solar returns nor transits mean anything. It's the first stone, and here it's free.
Birth chart: fate or free will?
Our answer is the same across this site: the chart isn't a script, it's a terrain map. It shows your natural slopes — the talents that run downhill on their own, the zones that will always be a climb — and the seasons when the terrain shifts. What you do with it stays your business: two people with neighboring charts live very different lives, precisely because the map never held the wheel. A good birth chart doesn't tell you who to be; it helps you stop fighting your own landscape.
Frequently asked questions
Is the birth chart calculation really free?
Yes — the full calculation (Sun, Moon, rising sign, ten planets, houses) is free and requires no sign-up. What costs money, if you want it afterwards, is the personal reading: the detailed interpretation of your chart against your question.
What information do I need?
Date, time, and city of birth. The time is decisive for the rising sign and the houses — it shifts about every two hours. Without an exact time the calculation runs for noon and says so honestly: the Sun and planets stay reliable, the rising sign and houses become approximate.
What's the difference between a birth chart and a horoscope?
A daily horoscope speaks to one-twelfth of humanity at a time. A birth chart is your personal photograph of the sky: the position of every planet at your moment of birth. It's the basis of all serious astrology — the horoscope is just its weather report.
What calculation system do you use?
Tropical zodiac, Placidus houses, positions computed from the Swiss Ephemeris — the astronomical reference behind professional software. The same settings most Western astrologers use.
See also: all about the rising sign · the Moon today · who runs these calculations