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ListDiff

Find what’s different between two lists

A list difference checker is only useful if you know which result to open—things that disappeared, things that were added, or everything that isn’t shared. Paste both lists below to see the list difference clearly, then pick the tab that matches your question.

Which tab do I need?

  • A only — in A, but not in B (gone from B, or never made it there).
  • B only — in B, but not in A (new on B, or missing from A).
  • Symmetric difference — everything that shows up in just one of the two lists.
  • Intersection — the shared items. Glance here first to confirm the compare worked.

Full definitions are in compare basics. If you only need a simple yes/no check for one item, see list checker vs list diff.

Why two lists look different when they “shouldn’t”

  • A trailing space after a name.
  • Comparing a whole spreadsheet row when you only meant the first column.
  • Blank lines that sneak in from a copy-paste.

Paste your lists here

List A
0 lines
List B
0 lines
Click “Compare lists” to generate results.

FAQ

What counts as a difference?

Anything in one list but not the other. Checking the shared tab helps you spot a bad paste before you act on the results.

Which tab should I look at first?

A only and B only for most jobs. Symmetric difference if you want every one-sided item in one place.

Also see: compare two lists · homepage