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.

Relationship probability

Relationship chart — Shared cM Project 4.0