While working on a small side project, I had to align some image-related specs with a third-party document.
The specs listed dimensions in millimeters. My internal notes were already in centimeters. The mismatch wasn’t a bug — just friction.
This wasn’t something I wanted to automate or normalize globally. I just needed to confirm a few values so I could move on with the task.
I handled it outside the project by doing a quick conversion in the browser, using a page like https://mmtocm.net
, then closed the tab and continued.
It never became part of the project history, which felt appropriate for such a one-off problem.
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