Does Year Difference upload my file or text to Tool-You servers?

No. Year Difference runs in this browser tab. Files stay on the device. Limit note: Local YMD. Absolute flips the sign of years and days.

Should I use Month Difference instead of Year Difference?

Use Year Difference when you need Completed years and day span; optional absolute. Use Month Difference when you need Month and day span; optional absolute. They share a category (Date & time) but not the same job.

Year Difference

Completed years and day span; optional absolute.

Completed anniversary years plus day count. Optional absolute values. Unlike Month Diff this is years, not months. Invalid dates fail.

What Year Difference does

Completed anniversary years plus day count. Optional absolute values. Unlike Month Diff this is years, not months. Invalid dates fail.

This URL is only for Year Difference (datetime · year diff). Completed years and day span; optional absolute. Other Date & time tools on Tool-You look similar in the chrome, so the job definition below is the part that belongs to Year Difference alone: Completed anniversary years plus day count. Optional absolute values. Unlike Month Diff this is years, not months. Invalid dates fail.

How to use Year Difference

Confirm you need Year Difference, not Month Difference (Month and day span; optional absolute.). Address: /datetime/year-diff.
Enter the numbers or dates Year Difference uses. Completed years and day span; optional absolute.
Read the result as Year Difference defines it — not as Date Difference (Count days, weeks, and calendar span between dates.). Completed anniversary years plus day count. Optional absolute values. Unlike Month Diff this is years, not months. Invalid dates fail.
Year Difference is an estimate in the browser, not professional advice. Local YMD. Absolute flips the sign of years and days.
Need a different formula? Try Date Difference (Count days, weeks, and calendar span between dates.) instead of stretching Year Difference.

When not to use Year Difference

Skip Year Difference when a neighbor tool matches better — start with Month Difference or Date Difference — or when the description already warns the job will fail. In the tool’s own words: Completed anniversary years plus day count. Optional absolute values. Unlike Month Diff this is years, not months. Invalid dates fail.

Questions about Year Difference

What does Year Difference do that other Date & time pages on this site do not?: Completed anniversary years plus day count. Optional absolute values. Unlike Month Diff this is years, not months. Invalid dates fail. Short version: Completed years and day span; optional absolute.
Does Year Difference upload my file or text to Tool-You servers?: No. Year Difference runs in this browser tab. Files stay on the device. Limit note: Local YMD. Absolute flips the sign of years and days.
Should I use Month Difference instead of Year Difference?: Use Year Difference when you need Completed years and day span; optional absolute. Use Month Difference when you need Month and day span; optional absolute. They share a category (Date & time) but not the same job.
What are the limits of Year Difference?: Local YMD. Absolute flips the sign of years and days. Also: Completed anniversary years plus day count. Optional absolute values. Unlike Month Diff this is years, not months. Invalid dates fail.