| Millennium: | 1st millennium |
| Centuries: | 6th century – 7th century – 8th century |
| Decades: | 610s 620s 630s – 640s – 650s 660s 670s |
| Years: | 640 641 642 643 644 645 646 647 648 649 |
| Categories: | Births – Deaths – Architecture Establishments – Disestablishments |
The 640s decade ran from January 1, 640, to December 31, 649.
Events and trends
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