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The Shared cM Project 3.0 tool v4

August 2017

Blaine T. Bettinger

www.thegeneticgenealogist.com

More about this project

CC 4.0 Attribution License

Interactive version v4 by Jonny Perl at DNA Painter

Click here to contribute data to the shared cM project

Shared cM online tool version 4 with probabilities

Last updated 20th April 2018

This is v4.
Other variants of this tool:

v3 with additional relationships
v2 with editable boxes
v1 original

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reset show %
Click here for a shareable link to the cM amount above

Relationship probabilities (based on stats from The DNA Geek)

  • Enter a number above to see probabilities

How to read this chart

  • RelationshipAverageRange
    (low to high)
    (99th percentile)
  • Great-Great-Great-Grandparent
  • GGGG Aunt / Uncle
  • Great-Great-Grandparent
  • GGG Aunt / Uncle
  • Half GG-Aunt / Uncle18712 – 383
  • Great-Grandparent881464 – 1486
  • Great-Great-Aunt / Uncle427191 – 885
  • Other Relationships
  • Half Great-Aunt / Uncle432125 – 765
  • Grandparent17661156 – 2311
  • Great-Aunt / Uncle914251 – 2108
  • 6C210 – 86
  • Half Aunt / Uncle891500 – 1446
  • Parent34873330 – 3720
  • Aunt / Uncle17501349 – 2175
  • 6C1R160 – 72
  • Half 3C610 – 178
  • Half 2C1179 – 397
  • Half 1C457137 – 856
  • Half Sibling17831317 – 2312
  • Sibling26292209 – 3384
  • SELF
  • 1C874553 – 1225
  • 2C23346 – 515
  • 3C740 – 217
  • 4C350 – 127
  • 5C250 – 94
  • 6C2R170 – 75
  • Half 3C1R420 – 165
  • Half 2C1R730 – 341
  • Half 1C1R22657 – 530
  • Half Niece / Nephew891500 – 1446
  • Niece / Nephew17501349 – 2175
  • Child34873330 – 3720
  • 1C1R439141 – 851
  • 2C1R1230 – 316
  • 3C1R480 – 173
  • 4C1R280 – 117
  • 5C1R210 – 79
  • 7C130 – 57
  • Half 3C2R340 – 96
  • Half 2C2R610 – 353
  • Half 1C2R14537 – 360
  • Half Great-Niece / Nephew432125 – 765
  • Great-Niece / Nephew910251 – 2108
  • Grandchild17661156 – 2311
  • 1C2R22943 – 531
  • 2C2R740 – 261
  • 3C2R350 – 116
  • 4C2R220 – 109
  • 5C2R170 – 43
  • 7C1R130 – 53
  • Half 3C3R
  • Half 2C3R
  • Half 1C3R870 – 191
  • Half GG-Niece / Nephew18712 – 383
  • Great-Great-Niece / Nephew427191 – 885
  • Great-Grandchild881464 – 1486
  • 1C3R1230 – 283
  • 2C3R570 – 139
  • 3C3R220 – 69
  • 4C3R290 – 82
  • 5C3R110 – 44
  • 8C120 – 50