Chore Rotation Calculator

About this calculator

A fair chore schedule rotates every task through every person over time rather than assigning the same job permanently to one member of a household — this calculator generates that rotation using modular arithmetic, shifting the chore-to-person assignment by one position each week so that, given enough weeks, everyone cycles through every chore an equal number of times.

The method is popular with families, shared houses, and college roommates setting up a recurring cleaning or task schedule, since it removes the need to manually reassign duties and avoids the perception that any one person is stuck with the least pleasant job. Entering a week number instantly shows who's assigned to what, making it easy to print a schedule months in advance or settle a dispute over whose turn it is.