Astrology calculators
Every tool here runs the same ephemeris and the same house mathematics, in your browser. Pick the question you actually have.
Birth chart
The chart itself: the wheel, the angles and the Big Three.
Birth Chart CalculatorThe full wheel: every degree, house cusp and aspect, with nothing paywalled.Rising Sign CalculatorThe exact degree climbing over the horizon at your birth, and why the minute matters.Moon Sign CalculatorWhere the Moon actually was, including the days it changes sign mid-afternoon.Big Three CalculatorSun, Moon and rising in one pass, with a card you can save and post.Midheaven CalculatorThe top of the chart: standing rather than self.Natal Chart CalculatorThe same full chart, framed for people who already read one.Sidereal Birth Chart CalculatorThe same birth data measured against the fixed stars instead of the equinox.Draconic Chart CalculatorThe zodiac re-zeroed on the north node, with every aspect intact.Vedic Birth Chart CalculatorSidereal rashis, whole sign houses and the nakshatra your Moon fell in.
Signs & placements
Where one body sits, and what that position governs.
Sun Sign CalculatorYour sun sign taken from the real solar position, not a fixed date range.Mercury Sign CalculatorHow you think and argue, including whether Mercury was retrograde.Venus Sign CalculatorWhat attracts you and how you show affection, placed to the arc minute.Mars Sign CalculatorDrive, temper and appetite: where the planet of action landed.Jupiter Sign CalculatorWhere growth comes easily, and where you tend to overreach.Saturn Sign CalculatorThe department of life that asks for patience and repeated effort.Uranus Sign CalculatorA seven-year generational marker, made personal by its house.Neptune Sign CalculatorFourteen years to a sign: where the collective blurs and idealises.Pluto Sign CalculatorThe slowest marker of all, and the house it aims its pressure at.Chiron CalculatorThe wound you keep meeting, and the skill it eventually built.Black Moon Lilith CalculatorThe mean lunar apogee: appetite that refuses to be managed.North Node CalculatorThe direction of travel, shown together with what you are leaving.South Node CalculatorWhat already comes easily, and why leaning on it stops working.Part of Fortune CalculatorAn Arabic part built from the Sun, Moon and horizon, day formula included.Vertex CalculatorThe western point some astrologers treat as a meeting place.Juno CalculatorThe asteroid read for what you look for in a committed partner.Ceres CalculatorHow you nurture and how you want to be looked after.Pallas CalculatorPattern recognition and strategy, read from Pallas Athena.Vesta CalculatorWhat you protect, and what you are willing to be single-minded about.
Love & compatibility
Two charts compared, overlaid and merged.
Synastry Chart CalculatorTwo charts laid over each other: every cross-aspect, both house overlays, one score.Astrology Compatibility CalculatorA weighted score with the whole contact list underneath it.Composite Chart CalculatorThe midpoint chart: the relationship as an entity with its own wheel.Soulmate Astrology CalculatorNode, vertex and luminary contacts, with the orbs left visible.Twin Flame Astrology CalculatorThe same contacts the twin flame idea rests on, measured rather than asserted.Marriage Astrology CalculatorSaturn, Juno and the seventh house: what holds rather than what sparks.Venus Mars Compatibility CalculatorPull rather than durability, isolated from everything else.
Timing & forecasts
Transits, returns and progressions against the natal chart.
Astrology Transit CalculatorToday's sky measured against your birth chart, orb by orb.Saturn Return CalculatorEvery pass, not just the first, including the three-crossing years.Jupiter Return CalculatorRoughly every twelve years, with the exact crossing dates.Solar Return Chart CalculatorThe chart for the exact minute the Sun comes home each year.Progressed Chart CalculatorA day for a year: the slow internal clock rather than the sky outside.Solar Arc Direction CalculatorEvery natal degree pushed forward by the progressed Sun's travel.
Houses & patterns
House systems, dominants, stelliums and aspect figures.
Astrology House CalculatorAll twelve cusps, what each house covers, and which bodies sit where.Placidus Chart CalculatorThe default in most modern software, and where it breaks down.Whole Sign House CalculatorThe oldest system: one sign, one house, no uneven cusps.Equal House CalculatorThirty degrees each, measured from the exact ascendant degree.Dominant Planet CalculatorWhich planet the chart keeps deferring to, and the scoring behind it.Dominant Element CalculatorFire, earth, air and water weighed, including anything missing.Dominant Modality CalculatorCardinal, fixed and mutable: whether you start, hold or adapt.Dominant Sign CalculatorThe sign your chart leans on hardest, which is often not your sun sign.Stellium CalculatorThree or more bodies piled into one sign or house.Aspect Pattern CalculatorGrand trines, T-squares, yods, kites and grand crosses, checked leg by leg.Chart Ruler CalculatorThe planet governing your rising sign, and where it reports from.Career Astrology CalculatorMidheaven, tenth, sixth and second houses, plus Saturn, read together.Past Life Astrology CalculatorSouth node, twelfth house and Saturn: the material that arrived pre-formed.
Location astrology
Where on the map each planetary line falls.
Astrocartography CalculatorEvery planetary line drawn on a world map you can filter.Relocation Chart CalculatorThe same birth moment read from somewhere else on Earth.
Adjacent systems
Decans, the Chinese zodiac and numerology, done properly.
Chinese zodiacYour animal and element, dated from the lunisolar new year.Life path numberYour number, reduced the way the system actually specifies.Decan calculatorWhich ten-degree band your Sun falls in, with both rulers.Rising sign, no birth timeEvery rising sign your birth date allows, and the ones it rules out.How much birth time mattersShift your birth time and watch exactly which placements move.