Free Lot of Death Calculator

The Lot of Death, also called the Part of Death or Pars Mortis, is a calculated point that marks where the themes of the eighth place gather in a chart: endings, transformation, inheritance, shared resources, and the private depths of a life. It is built from the Ascendant, the cusp of the 8th house, and the Moon, and it reads death as a significator of a topic, the way the eighth house governs shared money and depth, rather than as a forecast.

One thing to settle first: this is a symbol, not a clock. The Lot of Death does not tell you when you or anyone else will die, and no chart can. Read it for theme and emphasis and it earns its place. Treat it as a prediction and it becomes superstition. It belongs to the wider family of Arabic parts (lots), sensitive points derived from three positions in the chart, and you can compute it next to the rest with the Arabic Parts Calculator.

Search the open web and you will find more than one formula presented under one name. The version we use, the Ascendant plus the cusp of the 8th house minus the Moon, is the one recorded by Rhetorius and Theophilus of Edessa, and it matches most modern Part of Death lists and astro.com. The older Dorothean and Arabic tradition (Dorotheus, Abu Ma'shar, al-Biruni, and Bonatti) takes the same arc from the Moon to the 8th cusp but casts it from Saturn rather than the Ascendant, which lands the point elsewhere. We standardize on the Ascendant-cast form. Unlike the Lot of Fortune and the Lot of Spirit, it is not reversed for night charts: the same formula holds day and night.

Two other versions circulate. Some sources give a Saturn and Mars construction that flips by sect; it is not the mainstream Part of Death, so we do not use it. A separate Vedic calculation (the eighth cusp minus the triplicity ruler plus Saturn, in the sidereal zodiac) belongs to Jyotisha and answers a different question in a different system. Because the formula uses the 8th cusp, the result follows your house system, and this is the one lot where that choice really moves the point. This calculator works in whole-sign houses, the Hellenistic default, so the cusp is the start of the 8th sign from your rising sign. astro.com and most quadrant-house calculators use the Placidus 8th cusp, which usually sits well inside that sign rather than at its start, so their Lot of Death can land many degrees away and sometimes in the neighboring sign. Both are valid; they run the same formula in different house frames.

Start with the house, which is the load-bearing part. It tells you which arena of life carries the eighth-place themes of ending, depth, and what is shared or handed over. Then read the sign for the style of the theme, and the ruler of the lot for how the story tends to move. Its closest sibling is the Saturn-keyed Lot of Nemesis, the point of loss, limit, and concealment, and the two read well together when you are studying the harder, more private threads in a chart.

The Lot of Death sits inside a larger traditional method, and seeing it in context is what keeps it honest. Hellenistic and medieval astrologers studied longevity through the hyleg, the life-giving point, the alcocoden, the planet that yields the traditional planetary-year bands, and the anareta, the so-called destroyer point. The lot names the topic while those techniques handle the timing. We frame all of them with modern safety language: the planetary-year numbers are historical symbolism, not actuarial figures, and the lot is one input among many in a careful timing practice, never a verdict on its own.