MRCA Calculator

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MRCA Calculator

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Graph

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Calc

Text

Graph

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MRCA Calculator

Remix

MRCA Calculator

R1

a=21.9 // cM, Shared DNA

cM, Shared DNA

+

R2

b = 1979 // Year when your born

Year when your born

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R3

c = 1989 // Year when your march born

Year when your march born

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R4

d=27 // Years per generation

Years per generation

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R5

L=ln(3585/a)/ln(2)

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R6

g=L/2+1 // Generations

Generations

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R7

m=round(2*b-c-d*(L-1)) // Year when MRCA couple born (full relative)

Year when MRCA couple born (full relative)

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R8

h=m+d // Year when a MRCA born (half relative)

Year when a MRCA born (half relative)

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