Which Houses Are Checked For Mangal Dosha?
One commonly used rule identifies Mars in houses 1, 2, 4, 7, 8 and 12 as potentially relevant to Manglik classification. Another commonly encountered rule excludes the second house and checks 1, 4, 7, 8 and 12. This is why two calculators or astrologers can disagree about the same birth chart without making an arithmetic error.
The first house is traditionally associated with self-expression, the fourth with home and domestic circumstances, and the seventh with partnerships. The eighth and twelfth are also discussed in interpretations of shared life and private matters. The second house is associated with family and resources, which helps explain its inclusion in some traditions.
These associations do not establish that Mars in one of these houses causes conflict. The Mangal Dosha Calculator reports a traditional positional classification only. A result is best understood as a description of how a specific astrological rule treats the chart.