Amazon Simple Storage Service
Developer Guide (API Version 2006-03-01)

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Amazon S3 Multipart Upload Limits

The following table provides multipart upload core specifications. For more information, see Multipart Upload Overview.

Item Specification
Maximum object size 5 TB
Maximum number of parts per upload 10,000
Part numbers 1 to 10,000 (inclusive)
Part size 5 MB to 5 GB, last part can be < 5 MB
Maximum number of parts returned for a list parts request 1000
Maximum number of multipart uploads returned in a list multipart uploads request 1000