The Clever Lab · Born Between 2 Generals

Fair Split

Splitting evenly can be deeply unequal when incomes differ. See both ways at once and choose with eyes open. Fair isn't always equal.

Start from an example

Shared cost

The total you're dividing — rent, a trip, a group gift.

People & monthly income

Name of person 1$Monthly income of person 1/mo
Name of person 2$Monthly income of person 2/mo
Name of person 3$Monthly income of person 3/mo

How fair to leanFully proportional

EqualProportional

Drag to choose where your group lands. The Chosen column updates live.

Equal, each

$800

Proportional

by income

Your blend

100%

Equal versus proportional split per person, with the chosen blended amount
Person	Income share	Equal	Proportional	Chosen	vs equal
Avery	55%	$800	$1,309	$1,309	+$509
Blair	27%	$800	$655	$655	−$145
Casey	18%	$800	$436	$436	−$364

Split evenly, that's $800 each. Weighed by income, Avery pays $1,309 and Casey pays $436 — a $873 difference that tracks what each can carry. Fair isn't always equal; your group decides.

The share link carries the names and amounts you typed — only send it to your own group. Nothing is uploaded; the link is built right here in your browser.

fair-split.verify

$ fair-split verify
cost ............ $2,400
people ......... 3
blend .......... 100% proportional
proportional sum $2,400  == cost ✓
scenario sha256  computing…
note: computed locally · nothing stored on a server or sent

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AI can be wrong. Not medical, legal, or financial advice.