Whole Sign House System Chart Calculator

Your 1st house is your Ascendant's whole sign, start to finish

In a Whole Sign chart, whichever sign your Ascendant falls in becomes your entire 1st house, all 30 degrees of it, regardless of where in the sign your Ascendant actually sits. The next sign in zodiac order becomes your 2nd house, and so on around the wheel.

This means a planet's house placement depends only on which sign it occupies, never on a calculated cusp degree. If your Ascendant is at 2° Leo, your whole 1st house is Leo, your 2nd is Virgo, and so on, a planet at 29° Leo is still in the 1st house, right alongside a planet at 3° Leo.

No planet is ever split across two houses

Quadrant systems like Placidus, Koch, Campanus, and Regiomontanus calculate cusps that can fall anywhere within a sign, which sometimes puts two planets in the same sign into different houses. Whole Sign removes that possibility entirely, a sign and a house are the same 30-degree block, so a planet's house is fixed the moment you know its sign.

This makes Whole Sign the most stable system when birth time is uncertain: even an hour of error in birth time is unlikely to move a planet into a different sign, so its house rarely changes either, a real difference from Placidus or Koch, where a shift in cusp position can flip a planet from one house to the next.

Whole Sign is older than every quadrant system in use today

Whole Sign is the house system documented in the earliest surviving Hellenistic astrology texts, used continuously since roughly the 1st century BCE. Quadrant systems like Placidus (17th century) and even older ones like Campanus and Porphyry (medieval and late antique) all developed later as alternatives.

Modern traditional and Hellenistic revival astrology, along with most Vedic (jyotish) practice, still uses Whole Sign as the default. It's not a niche or experimental option but the longest continuously used house system in the field.

Reach for Whole Sign for traditional, Hellenistic, or Vedic-style readings

Whole Sign is the standard choice if you're studying or practicing traditional Western astrology, Hellenistic astrology, or Vedic astrology, where it's often assumed as the default rather than a special selection. It's also useful any time you want house placements that are unaffected by small birth-time uncertainty.

How Whole Sign compares to Equal House and Porphyry

Equal House also avoids quadrant math, but it measures twelve 30-degree houses starting from your exact Ascendant degree rather than from the start of its sign, so unlike Whole Sign, an Equal House cusp can fall in the middle of a sign. Porphyry keeps the calculated angles (Ascendant, MC, Descendant, IC) from a quadrant chart and just divides the arcs between them evenly, which is a different starting point entirely.

Against Placidus, Koch, Campanus, and Regiomontanus, which all use trigonometric or time-based cusp calculations, Whole Sign's houses will often show the same planets grouped differently, since those systems can slice a single sign into two houses.