It essentially means that something is the same thing. The two things you're talking about are really similar.
Tom: "Hey we can either rent a Ford Taurus, or a Mercury Sable."

Eric: "well 6 of 1, half dozen of another."
by quebert September 14, 2007
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A shortened form of "six in one-half dozen in the other".

Used to represent or describe the same outcome of two circumstances.
50/50.
You could take the highway, or take city roads. It doesn't really matter, they both take 10 minutes, it's six in one-half dozen.
by Blackout_ July 1, 2019
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A situation which could go either way. Maybe good or bad. 50/50. See: the English phrase rice and chips.
It was six of one, half dozen of the other, so what could I do?
by Dash2 June 5, 2010
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"Jeff, which chair do you like better?"

"They're six of one, half a dozen of the other"

"...?"
by ajax6719 March 8, 2012
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