Calculator Suite
Digital Storage Converter
Convert between bytes, kilobytes, megabytes, gigabytes and binary units
Popular Digital Storage Converter Conversions
Quick Presets
Base Unit Method
= Value in target unit
= Value in input unit
= Conversion factor to base
= Conversion factor from base
Category-Specific Formula
Decimal vs Binary
Storage manufacturers use decimal (1000-based) units (KB, MB, GB, TB), while operating systems often use binary (1024-based) units (KiB, MiB, GiB, TiB). This causes apparent 'missing' storage space.
Storage Technologies
Different storage devices use various technologies: SSDs use NAND flash, HDDs use magnetic storage, and RAM uses volatile memory. Each has different performance characteristics and storage densities.
File Sizes
Understanding data sizes helps manage storage: text files are typically KB, photos are MB, videos are GB, and large databases or backups can be TB. Compression can significantly reduce file sizes.
Network and Bandwidth
Internet speeds are measured in bits per second (bps), while storage is measured in bytes. Remember: 8 bits = 1 byte. A 100 Mbps connection can transfer about 12.5 MB per second theoretically.
There are two systems: decimal (1000) and binary (1024). Storage manufacturers use decimal (1 GB = 1000 MB), while computers often use binary (1 GiB = 1024 MiB). This is why your "1 TB" drive shows ~931 GB in your OS. 8 bits = 1 byte, so 100 Mbps internet ≈ 12.5 MB/s download speed.
Select Unit Type
Choose decimal (KB, MB, GB) or binary (KiB, MiB, GiB) units.
Enter File Size or Storage
Input the data amount you want to convert.
View Results
See conversions across all related units instantly.
💾 Example: Why Is My 1TB Drive Smaller?
You bought a 1 TB SSD but Windows shows only 931 GB:
Advertised
1 TB (decimal)
Actual Bytes
1,000,000,000,000
In GiB (binary)
931.32 GiB
Status
Normal!
What This Tool Assumes:
- • IEC standard binary prefixes (KiB, MiB, GiB)
- • SI decimal prefixes (KB, MB, GB)
- • 8 bits = 1 byte (standard)
- • No filesystem overhead
What It Does NOT Include:
- • Filesystem formatting overhead (~5-10%)
- • RAID parity storage loss
- • Compression ratios
- • SSD over-provisioning
KB vs KiB?
KB (Kilobyte) is 1000 bytes (decimal/SI), while KiB (Kibibyte) is 1024 bytes (binary/IEC). Storage manufacturers use KB, operating systems often use KiB.
Bits vs Bytes?
There are 8 bits in 1 byte. Internet speed is in bits (Mbps), file size in bytes (MB). 100 Mbps ≈ 12.5 MB/s.
Why does my 1TB drive show less space?
Manufacturers use decimal (1TB = 1000GB), but your OS uses binary (shows ~931 GiB). No storage is missing!
What is the difference between MB and Mb?
MB (capital B) = Megabytes (file size). Mb (lowercase b) = Megabits (network speed). MB = 8 × Mb.
How much is a Petabyte?
1 PB = 1000 TB = 1,000,000 GB. Major data centers store petabytes of data.