Free astrology calculators
Real charts from precision Swiss Ephemeris data — the same engine behind the full AstroNoir app. Calculate, download a branded chart, and ask our AI. No account needed.
- Swiss Ephemeris precisionReal astronomical positions to the arc-second — not sun-sign tables.
- No account, no cardEvery calculator is free. Your details are never shared with anyone.
- In your languageEnglish, Srpski, Deutsch, Français, Italiano, Español and Português.
Your Birth Chart
Your full birth chart — planets, houses, Ascendant & aspects — drawn as a downloadable wheel, plus 3 free AI questions.
Open tool →Don't know your birth time? Answer a few questions and our engine estimates your most likely time and rising sign.
Open tool →Find your Moon sign and what it reveals about your inner emotional world.
Open tool →Calculate your rising sign — the mask you wear and how others first read you.
Open tool →Your true Sun sign from exact birth data, not just your calendar month.
Open tool →Where Lilith sits in your chart — your raw, untamed edge.
Open tool →Relationships
Compare two charts and see exactly where you click and where you clash.
Open tool →Your love compatibility from both birth charts — attraction, feelings, desire, and the year ahead for the two of you.
Open tool →The chart of the relationship itself — your shared midpoint story.
Open tool →Cycles & Timing
The Sky Right Now
What AstroNoir Tools are
AstroNoir Tools is a set of free astrology calculators. Each one casts a real chart from a birth date, time and place — the actual positions of the Sun, Moon and planets at that moment, computed with the Swiss Ephemeris, the astronomical data professional astrologers rely on. Charts use the tropical zodiac and Placidus houses. No account is needed and nothing is shared.
What each tool does
Your birth chart. The natal chart calculator draws the whole chart — planets, houses, Ascendant, Midheaven and every aspect with its orb. The Moon sign, rising sign, Sun sign and Black Moon Lilith calculators each answer one question exactly. The Birth Time Finder estimates a likely birth time and rising sign for people who do not know theirs.
Relationships. Synastry lays two birth charts over each other and measures every contact between them; the composite chart builds one chart for the relationship itself.
Cycles and timing. The solar return casts the chart of your year from birthday to birthday; the Saturn return finds every pass of Saturn over its birth degree and the phases of the cycle around it.
The sky right now. Current planetary positions, the planets that are retrograde and when they turn direct, and today’s Moon phase.
How the readings are made
The engine does the math; the words are written only from what it computed — the signs, houses, aspects and dates of one specific chart, never a template. After a chart is cast, an AI astrologer answers three free questions about it. For the natal chart, synastry, the solar return and the Saturn return there is also an optional book written around your own chart — about 50 to 90 pages, in your language, sent as a PDF. The charts themselves stay free.
Frequently asked
Are the astrology calculators really free?
Yes. Every chart and every calculator on this page is free and needs no account. The only paid things are the optional books, and they are never required to see your chart.
Do I need my exact birth time?
For the Ascendant and the houses, yes — they change every few minutes. Without a time, a chart can still be cast for noon and read without them. If you do not know your time, the Birth Time Finder estimates a likely window from a few questions.
Which zodiac and house system do you use?
The tropical zodiac and Placidus houses, with positions from the Swiss Ephemeris.
What happens to my birth data?
It is used to compute your chart and is never shared with anyone. Each chart opens on its own private page that you can come back to or delete.