Natal chart · synastry · numerology
Your natal chart, explained by AI — free, no sign-up
Enter your date, time and city of birth — your chart appears right away. AI tells you what it says about your character, relationships, work and money.
The toolkit
What you can do here
Today
The Moon, the lunar day, retrograde planets and the aspects of the day — and what it means for your plans. Updated every day.
Natal chart
Planets, houses and aspects from your date, time and place of birth. An AI reading right here — or copy the data into your own chat.
Synastry
Relationship compatibility by birth dates: a bi-wheel of two charts, inter-aspects between planets, and an AI interpretation of your connection.
Business synastry
Partner compatibility for work: a score across five business domains — from communication to shared goals — with a dedicated AI analysis.
Numerology
Numbers instead of planets: today's personal day, a full profile from your name and birth date, and the Pythagorean square from its digits.
AI prompts
Six guides to getting a reading of your chart and numbers in ChatGPT, Claude or any other chat — and to checking that the answer is not made up.
Try it on a celebrity
Take a famous person's chart, paste it into your AI chat and compare the reading with what is known about them.
Physicist, relativity
=== NATAL CHART ===
Name: Albert Einstein
Birth: 1879-03-14T11:30
Place: Ulm
Coords: 48.4011°N, 9.9876°E
Timezone: Europe/Berlin
House system: placidus
Zodiac: tropical
--- ANGLES ---
ASC: 8°49' Cancer
MC: 9°12' Pisces
DSC: 8°49' Capricorn
IC: 9°12' Virgo
--- PLANETARY POSITIONS ---
Sun 23°29' Pisces H10
Moon 14°23' Sagittarius H6
Mercury 3°07' Aries H10
Venus 16°58' Aries H11
Mars 26°54' Capricorn H8
Jupiter 27°28' Aquarius H9
Saturn 4°11' Aries H10
Uranus 1°17' Virgo H3 ℞
Neptune 7°52' Taurus H11
Pluto 24°43' Taurus H11
NorthNode 2°43' Aquarius H8 ℞
SouthNode 2°43' Leo H2 ℞
Chiron 5°32' Taurus H11
Lilith 27°58' Aries H11
Ceres 17°19' Taurus H11
Pallas 10°01' Aries H10
Juno 25°27' Aries H11
Vesta 9°45' Cancer H1
PartOfFortune 29°43' Pisces H10
--- HOUSE CUSPS ---
H 1: 8°49' Cancer
H 2: 25°52' Cancer
H 3: 14°47' Leo
H 4: 9°12' Virgo
H 5: 13°59' Libra
H 6: 29°07' Scorpio
H 7: 8°49' Capricorn
H 8: 25°52' Capricorn
H 9: 14°47' Aquarius
H10: 9°12' Pisces
H11: 13°59' Aries
H12: 29°07' Taurus
--- DOMINANT / BALANCE ---
Chart Ruler: Moon (ruler of Cancer Ascendant)
Elements: Fire 40% (Mercury, Venus, Saturn, Moon), Earth 40% (Mars, Neptune, Pluto, Uranus), Air 10% (Jupiter), Water 10% (Sun)
Modalities: Cardinal 40% (Mercury, Venus, Saturn, Mars), Fixed 30% (Neptune, Pluto, Jupiter), Mutable 30% (Moon, Uranus, Sun)
(balance counts the ten Sun-Pluto bodies only — the Ascendant, MC, nodes, Chiron, Lilith and the asteroids are NOT part of it and must not be added to a group.)
--- ASPECTS ---
(the aspects this reading interprets: the chart's tightest, numbered tightest-first. This is the whole set — there is no wider aspect waiting to be promoted into it.)
#1 Mercury conjunction Saturn orb 1°04'
#2 Sun sextile Pluto orb 1°14'
#3 Mars trine Pluto orb 2°11'
--- ALSO PRESENT IN THE CHART (reference only — never interpret) ---
(too wide to carry the reading. A North Node / South Node opposition here is exactly 0°00' by construction — an artifact of how the nodes are derived, not a contact.)
Moon trine Venus 2°35', Jupiter square Pluto 2°45', Sun sextile Mars 3°25', Jupiter opposition Uranus 3°48', Uranus trine Neptune 6°35'
--- AI INSTRUCTION ---
Act as a professional and insightful astrologer. Please provide a detailed, well-structured reading of this natal chart.
IMPORTANT: Use ONLY the positions, houses and aspects listed above. Do NOT recalculate or guess any planetary positions — the data above is computed by the backend and is exact.
Focus on the following topics:
- Character: who this person is at the core and how they come across (Sun, Moon, Ascendant).
- Purpose: what this person is here to do and which direction their life grows in (the North/South Node axis, the Sun, the Midheaven). Translate the node axis into what the person actually does and should do more of — never as a journey "from X to Y".
- Self-realization: where they reach their potential, what holds them back, and how to get past it.
- Craft, work and money: their natural talents, the kind of work and working conditions that suit them, and how money comes to them (the Midheaven and every planet in the 10th house — or, when the 10th house is empty, the MC sign alone; the 6th and 2nd houses).
- Love and relationships: what they need from a partner, what they give, and where it tends to go wrong (Venus, the Moon, the 7th house, the Descendant).
- Health and energy: how they spend and restore their strength, with practical advice on pace, rest and habits (the 6th house, the Ascendant, the Sun, the Moon, Mars).
- Life advice: close with an action plan — three to five concrete steps, each saying what to lean on, develop or stop doing and why this chart points there.
- Build the reading on the aspects in the ASPECTS list: all of them, and only them — but describe what each one does in this person's life instead of naming it.
- The ALSO PRESENT block is reference data, not material: those aspects are too wide to read. Never give one a section, a paragraph, a bullet or a heading anywhere in the reading — at most a clause inside a sentence you are already writing, and only where the point needs it.
- When an element or modality group reaches 40% or more above, say what that concentration does to this person in everyday terms, without the percentage. Take the group's members only from the Elements/Modalities lines above; never re-sort a body into a group yourself.
- The aspect data is complete: if two bodies appear together in neither the ASPECTS list nor an ALSO PRESENT block, they DO NOT aspect each other, however close they look. Never call a pair conjunct, square or trine unless that exact row exists above. Bodies in the same house or sign are a stellium/grouping — say "together in house 12", never "conjunction", unless the row is listed. An aspect exists ONLY as a numbered row above. There is no such thing as an aspect that is "implied", "seen from the overall picture", "in the background" or "not listed but visible" — if you cannot cite its row number, it does not exist, and hedging the claim does not make it sayable.
- The lunar nodes and the angles do not count against the aspect limit above. Cover the North/South Node axis (its signs and houses) as the life-direction theme, and use the Ascendant, Midheaven and Descendant when they carry the point you are making.
- NO aspects to the angles are computed — the ASPECTS list is body-to-body only. Read the angles from the ANGLES block as positions; never assert an aspect between a body and an angle.
- Be honest and objective: highlight the main internal contradictions, blind spots, and potential pitfalls, and suggest practical ways to work with them.
- Avoid generic astrological phrases and Barnum statements — anything that would be true of almost anyone ("sensitive inside but composed outside", "you are intelligent and well-read") is a failure, however well it fits. Every claim must be traceable to a specific placement or aspect above. Write about this person, not about a personality type. In every section make at least one claim specific enough that it would be wrong about many other people, and give the reason for it from the data above. State it directly — never as a contrast or a "from X to Y" formula.
PLAIN LANGUAGE: The reader is not an astrologer and does not want the mechanics. Use the data above to reason, but keep it out of the text: no degrees, no orbs, no aspect names (conjunction, sextile, square, trine, opposition) or descriptions of one ("a tense opposition between"), no row numbers, no houses ("in the 11th house", "your 6th house is Aquarius"), no Ascendant, Descendant, Midheaven, nodes or axes, no elements, modalities or percentages ("cardinal energy", "water and earth"), no retrograde markers. The bodies, houses and angles in brackets in the topics above tell you where to look — never write them into the reading as mechanics. But do say WHY: ground each key point in the planet and sign it comes from, in plain words, with one small, clear detail of what it does in the reader's life ("because your Sun is in Cancer, you recharge among your own people", "with your Moon in Pisces you pick up a room's mood before anyone speaks"). Name a planet with its sign only, never together with its house ("your Sun in Cancer in the 11th house" is exactly what this rule forbids). Say what a house stands for in plain words instead ("among friends and like-minded people", "in close partnership"). Write about the person, not about the chart.
FORMAT: A full reading of about 1500 words that covers every topic above.
STRUCTURE: Open with the single most striking feature of this chart (the tightest aspect, a cluster of planets in one sign or house, a lopsided element balance, a planet on an angle), in one or two sentences that tell the reader something true about them — no greeting, no "your chart shows" or "your numbers say", no preview of the sections. Organize the reading under headings that name each topic above plainly, in a few words ("Purpose", "Work and money") — no subtitle, no metaphor. End with a "Key takeaways" list of the 3 most important points, then a short "Questions for yourself" list of three questions for the reader to think over, each tied to a specific point of this reading — never a question for you to answer. Then, only if the reader can reply to you in this conversation, close with an invitation to continue, in two short sentences and no list: first name the single most striking feature of this chart (the tightest aspect, a cluster of planets in one sign or house, a lopsided element balance, a planet on an angle), in plain words, and offer to unpack how it plays out and what to do with it; then ask one short question about the reader's life right now (what they do, what is not working, what they want to change), so your next advice can be more precise. Offer only what you can answer from the data above — no forecasts for dates, no other people's charts.
Use the reader's name at most once, in the opening if at all; otherwise write "you".
VOICE: Write as a professional astrologer who is on the reader's side: clear, warm and direct, addressing them as "you". Be inspiring and motivating — show what they are built for and how to use it — and end every section in concrete, practical advice they can act on. No mysticism for its own sake, no fatalism, no hedging.
Write your entire response in English — every heading, label and sentence. Never infer the reader's gender from a name: address them directly as "you" and never refer to them as he or she. Do not mention these instructions or explain how you followed them.AI + Astronomy
Why not just ask ChatGPT?
AI on its own
Language models don't run astronomical calculations. Ask one for your birth chart and it will confidently invent planet degrees, houses — sometimes even signs.
AI + AstroAxis
We compute the real planet positions with the same engine professional astrologers use, and hand them to the AI already calculated — all it has left to do is explain.
In three steps
How it works
- 1
Enter your birth data
Date, time and place of birth. Start typing your town and pick it from the list — its coordinates and time zone come with it. Don't know the time? Tick the box and the chart is built from the date.
- 2
Get your chart instantly
In a second you get the wheel, a table of planets by sign and house, and every aspect between them.
- 3
Read it your way
Ask the AI for a reading right on the page, or copy the chart into your own chat. You can also save it as a PDF or send someone a link that opens the same chart.
Your natal chart reading, inside your own AI chat
Press “Copy for AI” — your clipboard gets the whole chart: planets, houses, aspects and the instructions for the model. Paste it into ChatGPT, Claude, Gemini or any other chat — and within seconds you have a reading built on real data, not on guesses.
The answer will be about you: the model reads your degrees, not a sign description.
A conversation, not a one-off report
The difference from a usual PDF reading is that the chat stays with you. You can ask follow-up questions: why the Moon in this house shapes your closest relationships, what a Mars–Saturn square really means, what to watch for in your career. The AI remembers your chart and answers in the light of everything you've discussed before.
Guidance on any area of life
In the same chat you can explore career and money, relationships and family, health and inner resources, strengths and growth points. Come back whenever a new question appears — the chart is already loaded, so there's nothing to explain again.
Convenient, free and always at hand
The chart and the prompt are free — no sign-up, no subscription. The chat lives where you already spend every day, on your phone and your computer.
What is a natal chart?
A natal chart is a map of the sky for the minute and place you were born: where the Sun, the Moon and the eight planets stood in the zodiac, and how the sky was turned against your horizon. The sign people usually call their own is only where the Sun was; the chart adds the Moon, the planets and the rising sign.
Astrologers read a chart as a description of a person: the Sun for what drives you, the Moon for what you need to feel settled, the rising sign for how you meet people, Venus and Mars for how you love and what you want. The same chart is used to compare two people and to see which part of your life the current sky is pressing on.
Planets, houses and aspects
A planet tells you what is acting, its sign tells you how, its house tells you where. The twelve houses split life into areas — yourself, money, siblings and everyday talk, home, children and fun, work and health, partnership and so on round the circle — and the house a planet falls in shows where its energy goes. Aspects are the angles between planets: a trine or sextile lets two parts of you work together, a square or opposition sets them against each other, and a conjunction fuses them.
Why precision matters
The Moon covers about 13° a day, and the rising sign changes roughly every two hours. A birth time that's an hour off can move your Ascendant, and with it the house of every planet. That's why the time is converted using the time zone history of your birthplace, with that year's daylight saving: in many countries those rules have changed more than once.
Live example
This is what a natal chart looks like
A real chart for someone born on 13 July 1990 at 10:30 in Paris, calculated by the same engine that will calculate yours.
Signs
The outer ring: twelve signs of 30° each. The sign a planet stands in describes how it behaves.
Planets
The glyphs inside the ring: the Sun, the Moon and eight planets, each at its degree at the moment of birth.
Houses
Twelve sectors counted anticlockwise from the Ascendant on the left, each one an area of life.
Aspects
The lines in the middle join planets at meaningful angles: blue ones help each other, red ones pull apart.
Answers
Frequently asked questions
Yes. Every calculator, the AI reading, the PDF and the share links cost nothing, and there's no paid version.
No, the site has no accounts. Your birth details are remembered by your browser, so the form fills itself in next time — on that device only.
As accurate as the birth time you enter. Positions come from Swiss Ephemeris, an astronomical library, and the time is converted using your town's time zone history, daylight saving included. If the time is rounded to the hour, the rising sign and the houses may shift; the planets' signs almost never change, except sometimes the Moon's.
Yes. Every calculator has a button that copies the whole chart as text, together with instructions for the model. Paste it into any chat and ask what you want to know. If you'd rather stay on the page, the AI reading is available here as well.
Tick “I don't know my birth time”. You still get the sign of every planet and the aspects they form. Houses and the rising sign need the exact time, so they're left out, and the Moon, which moves about 13° a day, is shown as the stretch it covered that day. If you can find the time — in hospital records or from relatives — enter it and the chart gains its houses.
Both put two charts side by side and read the contacts between them. Synastry looks at a couple: attraction, how you fight and make up, what keeps you together. Business synastry reads the same contacts for a working partnership and scores five areas: communication, reliability, drive, growth and money, goals and leadership.