Data Storage Converter

Understanding Digital Storage Units

Digital storage measures the capacity of memory and storage devices. The byte is the fundamental unit, representing 8 bits. Storage capacity has grown exponentially, from kilobytes in early computers to terabytes and petabytes in modern data centers.

Two systems exist for naming storage units: decimal (SI) prefixes use powers of 1000, while binary prefixes use powers of 1024. Hard drive manufacturers use decimal prefixes, while operating systems often display binary values, causing apparent capacity discrepancies.

Binary vs Decimal Prefixes

The confusion between binary and decimal prefixes led to the creation of binary prefix names (kibi, mebi, gibi) by the International Electrotechnical Commission in 1998:

The 7.4 percent difference between GB and GiB explains why a 500 GB hard drive shows approximately 465 GiB in Windows.

Storage Capacity Examples

What can you store with different capacities?

Estimates assume: photos at 3 MB each (12 MP JPEG), songs at 4 MB each (128 kbps MP3), HD video at 4 GB/hour, 4K video at 20 GB/hour.

Bit vs Byte

Bits and bytes are related but distinct units. One byte equals 8 bits. Storage capacity uses bytes, while data transfer rates typically use bits per second.

Example: A 100 Mbps internet connection transfers data at:

Downloading a 1 GB file would take:

Storage Device Capacities

Typical storage capacities for different device types:

Unit Conversions

Convert between storage units:

• 1 byte = 8 bits
• 1 KB = 1,000 bytes (decimal) or 1,024 bytes (binary/KiB)
• 1 MB = 1,000 KB = 1,000,000 bytes (decimal)
• 1 MB = 1,024 KB = 1,048,576 bytes (binary/MiB)
• 1 GB = 1,000 MB = 1,000,000,000 bytes (decimal)
• 1 GB = 1,024 MB = 1,073,741,824 bytes (binary/GiB)
• 1 TB = 1,000 GB = 10¹² bytes (decimal)
• 1 TB = 1,024 GB = 2⁴⁰ bytes (binary/TiB)
• 1 PB = 1,000 TB = 10¹⁵ bytes
• 1 EB = 1,000 PB = 10¹⁸ bytes
• 1 ZB = 1,000 EB = 10²¹ bytes
• 1 YB = 1,000 ZB = 10²⁴ bytes

Converting between decimal and binary:

• 1 GB = 0.9313 GiB
• 1 GiB = 1.0737 GB
• 1 TB = 0.9095 TiB
• 1 TiB = 1.0995 TB
• 100 GB = 93.13 GiB
• 500 GB = 465.66 GiB
• 1 TB = 931.32 GiB

Data Growth and Storage Trends

• Global data creation reached 120 zettabytes in 2023
• Data volume doubles approximately every 2 to 3 years
• Average smartphone photo is now 3 to 5 MB (vs 1 MB in 2010)
• 4K video requires 4 to 6 times more storage than 1080p
• Cloud storage costs have dropped 90 percent since 2010
• NVMe SSDs now offer 4 to 8 TB in M.2 form factor
• HAMR technology enables 30+ TB hard drives

Applications of Storage Conversion

• Cloud storage plan selection and cost comparison
• Backup capacity planning
• File transfer time estimation
• Storage device purchase decisions
• Data migration planning
• Database capacity management
• Video production storage requirements
• IT infrastructure planning

Frequently Asked Questions