Free Egyptian Bounds Calculator

The Egyptian bounds are a Hellenistic subdivision of each zodiac sign into five unequal segments, each ruled by one of the five non-luminary planets: Mercury, Venus, Mars, Jupiter, or Saturn. The segments are not equal in width. Jupiter's bound in Aries runs from 0 to 6 degrees; Venus picks up at 6 and runs to 12; Mercury, Mars, and Saturn each take a slice after that. The pattern changes sign by sign.

A planet falling inside its own bound gains +2 essential dignity in the classical scoring stack. A planet falling inside another planet's bound takes coloring from that bound ruler. Vettius Valens treats the bound ruler as the planet's supervisor within the sign, capable of supporting or undermining the planet's natural significations.

The keyword overlap causes constant confusion. Egyptian bounds are a zodiacal subdivision in longitude, used in Hellenistic dignity scoring. Out-of-bounds planets refers to declination measured perpendicular to the celestial equator: a planet whose declination exceeds plus or minus 23 degrees 26 minutes is "out of bounds." The two concepts share a word and nothing else.

The out-of-bounds technique is a 20th-century development credited to Donna Cunningham and Kt Boehrer. Egyptian bounds are over 2,000 years old. If you came here looking for the declination concept, use the out-of-bounds planets calculator instead.

The report shows what each planet is doing inside the sign it occupies. Sign tells you the costume; the bound ruler tells you who is directing the scene. A few practical cues:

Planet in its own bound. A small but real strengthening. Most planets will not be in their own bounds. When they are, the placement gains weight and is flagged in gold in the table.

Planet in a friendly bound. Jupiter in Venus's bound, Venus in Jupiter's bound, Mercury in Jupiter's bound: the bound ruler agrees with the planet's natural temperament, and the placement runs smoothly.

Planet in a contrary bound. Venus in Saturn's bound delays affection or marries it to duty. Jupiter in Mars's bound makes generosity sharp. Mercury in Saturn's bound thinks slowly and seriously, often very precisely. None of these are bad. They are flavored.

Angular placements amplify the bound ruler. A planet on the Ascendant, IC, Descendant, or MC carries its bound ruler's signature into the most visible compartments of life. Bound ruler analysis is most actionable for the Ascendant degree itself, the Sun, the Moon, and the Lot of Fortune.

Three bound systems survive from antiquity. They disagree on widths, rulers, and provenance.

Egyptian. The standard system. Independently attested in Valens, Dorotheus, Hephaistio, Firmicus, Paul of Alexandria, and recovered Greek horoscope papyri from the 1st century BCE forward. Recent Babylonian cuneiform research suggests the table predates its Greek transmission, dating to Mesopotamian sources from the 4th to 5th century BCE.

Ptolemaic. Ptolemy claimed in Tetrabiblos 1.21 to have found a corrected table in an old manuscript. The reasoning is post-hoc and clean in a way that aroused suspicion in his own century. Few practicing Hellenistic astrologers adopted it.

Chaldean. A simpler scheme using triplicity-based ruler order, used in some Persian-medieval streams. Beautifully symmetric but historically marginal compared to the Egyptian table.

If you are doing Hellenistic work, use Egyptian. The calculator above defaults to it for that reason.

The classical dignity scoring (per Lilly, with roots in Dorotheus and Valens) ranks the five essential dignities:

• Domicile (+5): the planet ruling the sign
• Exaltation (+4): the planet exalted in the sign
• Triplicity (+3): the elemental ruler by sect
• Bound (+2): the segment lord we calculated above
• Decan or face (+1): the 10-degree subdivision lord

Bounds sit fourth in the stack, which means a planet in its own bound but outside its own sign is still meaningfully strengthened. The full dignity stack is what the almuten figuris calculator computes for the five hylegiacal points. Bounds are one column of that score.

The bounds are not just a static lookup. They drive a predictive technique called distributions through the bounds, sometimes circumambulations of the hyleg.

The technique works by directing a chart point (most often the hyleg or the Ascendant degree) forward through the zodiac at a fixed rate, typically one degree per year. As the directed point crosses each bound boundary, the bound ruler changes, and life enters a new chapter governed by the new bound lord. Persian astrologers (Abu Ma'shar, Masha'allah) elaborated the technique into a layered system of major and minor distributors that's still the most precise time-lord method in the Hellenistic tradition.

The calculator above gives you the static bounds you need to start that work. For full time-lord pacing, the timing report integrates distributions with profections, zodiacal releasing, and firdaria across nine sources.

Bound widths: Vettius Valens, Anthology, Book 1, Chapter 3 (Mark Riley translation, Project Hindsight edition). Cross-checked against Dorotheus, Carmen Astrologicum Book 1, and Hephaistio, Apotelesmatika Book 1.

Computational defaults: planetary positions computed from JPL DE-440 ephemerides via NASA's ANISE toolkit, with arc-second precision through 2050. Bound ruler assignments are deterministic from longitude: no orb, no interpretation layer between the position and the ruler. For the full essential dignity stack, see the essential dignities calculator.

Modern reception: Chris Brennan Hellenistic Astrology (2017), Robert Hand Night and Day, and the broader Hellenistic revival via Project Hindsight translations.