How do you count upload units?
We count upload units instead of single file uploads. A small file up to 100 MB is counted as one upload unit. Files bigger than 100 MB will consume one upload unit per 100 MB chunk.
For example, uploading a video file of a size of 1 GB (1024 MB) consumes 11 upload units.
On the billing page of the dashboard, you can find how many upload units have been used in the current billing cycle.
Note that if you delete files, the upload units counter won't be decreased.