Free tool
Shift Compatibility Calculator
Pick your shift, pick theirs, and see how well your schedules line up.
Compatibility score
40
Needs Effort
Your overlap is thinner. Intentional date days and clear comms make the difference.
How the score works
We compare shift patterns on three axes: cycle length, proportion of days off, and whether each pattern rotates between days and nights. Patterns with aligned cycles, matching rotation behavior, and similar off-day ratios score higher — because that's what actually determines whether two people can see each other.
This is the same principle Swing Shift uses to match users by schedule. If you like what you see, sign up and get real matches — not just a score.