About capacity display in computer :

8GB=approximately 6GB-8GB

16GB=approximately 12GB-14GB

32GB=approximately 28GB-30GB

64GB=approximately 58GB-60GB

128GB=approximately 100GB-119GB

Flash memory vendors are using decimal arithmetic: 1MB = 1000KB, 1G = 1000MB calculated, but the operating system is using binary arithmetic: 1MB = 1024KB, 1GB = 1024MB. So there are some differences between display capacity and nominal capacity of flash memory products. However, this is allowed to exist. Please do not doubt his authenticity. This is calculation difference between manufacturer and our PC; please Google 'Memory card capacity' to get more information.