About Capacity:
32GB ≈ 28.5GB-30GB
64GB ≈ 58.5GB-60GB
128GB ≈ 113GB-125GB
256GB ≈ 230GB-236GB
512GB ≈ 456GB-480GB
The capacity of the product is according to: 1MB=1000KB,1G=1000MB.
To calculate, the operating system is a binary algorithm that is 1MB=1024KB, 1G=1024MB.
So please pay attention to the actual capacity is marked capacity of 90%-93%.
This is calculation difference between manufacturer and your PC, please Google 'USB Flash Drive capacity' to get more information.