Free birth chart · No account
Free birth chart calculator — computed, not guessed.
Your Sun, Moon, Rising and every planet, computed from a real ephemeris — the same engine our mentor uses. Then ask the Architect one question about your chart, before any account. Free, and your chart stays in this browser unless you sign up.
Your birth chart
Ask the Architect what your chart means for you
You asked
You’ve had your free answer in this browser. Create your free account to keep talking with your mentor; your chart comes with you.
Create your free account to answer. Your mentor keeps your chart and this conversation.
Your question and answer stay in this browser until you create your account; then they move into your encrypted journal.
Ask your mentor what this means for you
Create a free account and your mentor will have this chart in hand — ask what it might mean in your own life.
Next you’ll create a free account. Your chart and your question wait in this browser for 30 minutes while you do.
What you get
Your big three — Sun, Moon and Rising — each to the degree and minute. All eight planets from Mercury to Pluto with sign and degree; with a birth time, your Midheaven and every body’s whole-sign house too. A note when the birth time is missing and your Moon sits near the edge of a sign, so you know how far to trust it. The time zone the calculation used, with daylight time where it applied on that date.
Everything in a plain table you can hold against any other calculator. No wheel to decode, no interpretation written for everyone born in your month. What the placements mean for you is the question you ask next, and the Architect answers it from this chart, not from a template.
How it’s computed
Positions come from a real ephemeris: an open-source astronomy library that gives where the Sun, Moon and planets actually were, seen from Earth, at your moment of birth. Tropical zodiac, the one Western astrology uses. Your birth time is read in your birthplace’s own time zone with the rules in force on that date — daylight time, and the zone changes a country made over the years — and turned into one exact instant.
Your Rising sign and Midheaven come from that instant and your birthplace’s coordinates. Houses are whole-sign: your Rising sign is your first house and each sign after it is the next. Without a birth time we calculate for noon: the Sun and planets hold, the Moon may sit near a boundary (we tell you when), and Rising, Midheaven and houses are left out rather than guessed.
Place search runs on GeoNames data, about 170,000 towns and cities. A chatbot predicts likely text; this page calculates.
Then ask the Architect
Once your chart is on screen, ask one question: tap one of three, or type your own. The Architect — the mentor inside Architect — reads your actual placements and answers in a few short paragraphs: the placements that matter for your question, what they say together, one small thing to try this week, and one question back. That first answer is free, in this browser, no account.
To reply, create a free account; your chart and this exchange come with you as your first entry, and the mentor keeps your chart in hand when it’s relevant to what you write. Your journal is encrypted where it’s stored, the key stays with you, and we can’t read it. Astrology here is a lens you chose for looking at your own life: a language for reflection, not a forecast.
Your big three
Sun
Your Sun sign is the one you already know: the sign the Sun occupied on your birthday, which is why it only needs a date. In astrology it stands for the core of you — what you’re building toward, where your energy wants to go, what “being yourself” feels like from the inside. On this page you also see its degree, which matters when you were born on a cusp day: a Sun at 29° Leo and one at 0° Virgo are a day apart and a sign apart.
Moon
Your Moon sign changes about every two and a half days, so it depends on your date and, near a boundary, on your time. Astrologers read it as your inner weather: what you need to feel safe, how you react before you’ve had time to think, what home means to you. Without a birth time we calculate for noon and warn you when the Moon is close to an edge, so a placement you build on is one you can trust.
Rising
Your Rising sign — the Ascendant — is the sign that was coming up over the eastern horizon where you were born, at the minute you were born. It shifts about every two hours, which is why it needs your time and place. Astrology reads it as the way you meet the world and how the world first reads you. It also sets your houses: in the whole-sign system used here, your Rising sign is your first house, and the rest follow in order.
Questions
Why do chatbots get birth charts wrong?
A chatbot predicts likely text. Unless it’s connected to an ephemeris — the data that gives where each planet was on any date — it isn’t calculating; it writes something that sounds like a chart, and signs and degrees can be off with no warning. We tested it: 49 of 50 free-ChatGPT charts had at least one placement in the wrong sign; the Rising was wrong 83% of the time when a birth time was given. This page calculates every position from what you enter.
Do I need my birth time?
Not for your Sun and planets. Without a time we calculate for noon, so a placement at the edge of a sign can land in the neighboring one — most often the Moon, which moves about 13° a day; we flag it when that’s possible. Your Rising sign, Midheaven and houses depend on the exact time (the Rising sign changes about every two hours), so they appear only when you give one. A birth certificate is the best source; if your time is approximate, treat those placements as approximate too.
Which house system does this use?
Whole-sign houses. Your Rising sign is your first house, the next sign is the second, and so on around the wheel. It’s one of the oldest systems and one of the simplest to read, and it’s the one the mentor uses when your chart comes up. Other systems, such as Placidus, divide the sky differently, so a planet near a boundary can sit in a different house there. The sign stays the same; only the house number moves.
Why is my Rising different on another site?
Your Rising sign changes about every two hours, so a time rounded to the hour, or one within minutes of a sign change, can tip it. The other causes are the time zone — we apply the daylight-saving and zone rules in force at your birthplace on that date — a birthplace matched in the wrong country, or a sidereal (Vedic) zodiac, which sits about 24° from the tropical zodiac used here. House systems never change the Rising sign, only the house numbers.
What’s the difference from a horoscope?
A horoscope is a forecast written for everyone with the same Sun sign, for a day or a week. A birth chart is a map of the whole sky at the minute you were born — ten bodies, twelve signs, twelve houses — and it doesn’t change. It isn’t a prediction but a detailed picture of one moment, which astrology uses as a language for looking at yourself. The mentor works with it that way: as a lens you chose, not as a schedule for your life.
Does it work for any year and place?
Dates from 1900 to 2030. Time-zone history is reliable from about 1900 onward, which is why we start there. Birthplaces come from GeoNames: about 170,000 towns and cities worldwide, matched as you type; add a region or country after a comma when a name is shared (“Paris, Texas”). Spelling without accents works. If a small village isn’t listed, the nearest town works: the planets are the same, and the Rising only changes if it sits right at the edge of a sign. Both hemispheres are handled.
What does the mentor do with my chart?
If you take your chart to your mentor, it uses it when it’s relevant to what you’re writing about, not as a daily horoscope. It names a placement when that helps you see the situation in front of you, and leaves it alone when it doesn’t. It doesn’t predict anything: astrology here is one language for reflecting on your own life, and you decide what fits. The mentor also remembers what you wrote, so the chart is read next to your life, not instead of it.
Is it free?
The chart is free, and you don’t need an account. Your one question to the Architect is free too, in this browser. To keep talking, create a free account: writing is free forever, no card; your first 11 mentor responses come at full power, then the free plan keeps the mentor replying once a week. The full mentor — a reply to every entry, a voice you design yourself, photos, voice notes — is $9.99 a week, $33 a month or $299 a year.