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Relationship probability

Enter shared cM (and optionally the segment count and both birth years). You are the white SELF block in the centre; boxes light up when the cM fits them. Ranges overlap — treat this as a ranked shortlist, not a verdict.

Relationship chart — Shared cM Project 4.0
  • Great-Great-Great-Grandparent
  • GGGG Aunt / Uncle
  • Great-Great-Grandparent
  • GGG Aunt / Uncle
  • Half GG-Aunt / Uncle208103 – 284
  • Great-Grandparent887485 – 1486
  • Great-Great-Aunt / Uncle420186 – 713
  • 1C3R11725 – 238
  • 2C3R510 – 154
  • Other Relationships
  • Half 1C2R12516 – 269
  • Half Great-Aunt / Uncle431184 – 668
  • Grandparent1754984 – 2462
  • Great-Aunt / Uncle850330 – 1467
  • 1C2R22133 – 471
  • 2C2R710 – 244
  • 3C2R360 – 166
  • 6C180 – 71
  • Half 2C1R660 – 190
  • Half 1C1R22462 – 469
  • Half Aunt / Uncle871492 – 1315
  • Parent34852376 – 3720
  • Aunt / Uncle17411201 – 2282
  • 1C1R433102 – 980
  • 2C1R12214 – 353
  • 3C1R480 – 192
  • 4C1R280 – 126
  • 6C1R150 – 56
  • Half 3C480 – 168
  • Half 2C12010 – 325
  • Half 1C449156 – 979
  • Half Sibling17591160 – 2436
  • Sibling26131613 – 3488
  • SELF
  • 1C866396 – 1397
  • 2C22941 – 592
  • 3C730 – 234
  • 4C350 – 139
  • 5C250 – 117
  • 6C2R130 – 45
  • Half 3C1R370 – 139
  • Half 2C1R660 – 190
  • Half 1C1R22462 – 469
  • Half Niece / Nephew871492 – 1315
  • Niece / Nephew17401201 – 2282
  • Child34872376 – 3720
  • 1C1R433102 – 980
  • 2C1R12214 – 353
  • 3C1R480 – 192
  • 4C1R280 – 126
  • 5C1R210 – 80
  • 7C140 – 57
  • Half 3C2R270 – 78
  • Half 2C2R480 – 144
  • Half 1C2R12516 – 269
  • Half Great-Niece / Nephew431184 – 668
  • Great-Niece / Nephew850330 – 1467
  • Grandchild1754984 – 2462
  • 1C2R22133 – 471
  • 2C2R710 – 244
  • 3C2R360 – 166
  • 4C2R220 – 93
  • 5C2R180 – 65
  • 7C1R120 – 50
  • Half 3C3R
  • Half 2C3R
  • Half 1C3R600 – 120
  • Half GG-Niece / Nephew208103 – 284
  • Great-Great-Niece / Nephew420186 – 713
  • Great-Grandchild887485 – 1486
  • 1C3R11725 – 238
  • 2C3R510 – 154
  • 3C3R270 – 98
  • 4C3R190 – 60
  • 5C3R130 – 30
  • 8C110 – 42

most likely 2nd 3rd fits the cM descendants siblings grandparent level great-grandparent level great-great level 2nd/3rd cousin level distant

Chart is the Shared cM Project 4.0 (March 2020, Blaine T. Bettinger, CC 4.0 attribution) in the DNA Painter layout. Probabilities are a Gaussian fit to the site's shared-cM table, optionally joint with the segment count and pruned by the age gap (~25 years/generation) — estimates for ranking, not clinical probabilities. DNA Painter's tool for a second opinion.