Digital Storage Conversions — MB to GB, GB to MB, TB to GB, KB to MB, MB to KB, GB to TB
Quick digital storage conversions commonly used for files, hard drives, memory cards, and data transfer. Convert
MB to GB, GB to MB, TB to GB,
KB to MB, MB to KB, GB to TB and more.
💡 Decimal vs Binary: Storage manufacturers use decimal (1 GB = 1,000 MB) while operating systems
use binary (1 GiB = 1,024 MiB). Toggle the checkbox in the converter to switch between systems.
Unit descriptions
BByte (B)
Basic unit of digital information. 1 byte = 8 bits. Represents a single character in most text encoding systems.
KBKilobyte (KB)
1 KB = 1,000 bytes (decimal) or 1,024 bytes (binary). A simple text document is typically 10-100 KB.
MBMegabyte (MB)
1 MB = 1,000 KB (decimal) or 1,024 KB (binary). A typical MP3 song is 3-5 MB. A high-quality photo is 2-5 MB.
GBGigabyte (GB)
1 GB = 1,000 MB (decimal) or 1,024 MB (binary). A DVD movie is 4-8 GB. Smartphones typically have 64-256 GB storage.
TBTerabyte (TB)
1 TB = 1,000 GB (decimal) or 1,024 GB (binary). Modern hard drives are 1-8 TB. Large video collections require terabytes.
Browse Digital Storage Conversions
Digital Storage Conversion Tables
Decimal System (SI)
1 KB = 1,000 B · 1 MB = 1,000 KB · 1 GB = 1,000 MB · 1 TB = 1,000 GB
Binary System (IEC)
1 KiB = 1,024 B · 1 MiB = 1,024 KiB · 1 GiB = 1,024 MiB · 1 TiB = 1,024 GiB
1 Byte
= 8 bits · = 0.001 KB (decimal) · = 0.0009765625 KiB
1 Kilobyte (KB)
= 1,000 B · = 0.001 MB · = 0.0009765625 MiB
1 Megabyte (MB)
= 1,000 KB · = 0.001 GB · = 0.0009765625 GiB
1 Gigabyte (GB)
= 1,000 MB · = 0.001 TB · = 0.0009765625 TiB
1 Terabyte (TB)
= 1,000 GB · = 0.001 PB · = 0.0009765625 PiB
Common Digital Storage Conversions
MP3 Song (4 MB)
= 0.004 GB · = 4,000 KB · = 4,096 KiB
HD Photo (5 MB)
= 0.005 GB · = 5,000 KB · = 4.88 MiB
Movie (HD, 2 GB)
= 2,000 MB · = 0.002 TB · = 1.86 GiB
Smartphone (64 GB)
= 64,000 MB · = 0.064 TB · = 59.6 GiB
Laptop SSD (512 GB)
= 512,000 MB · = 0.512 TB · = 476.8 GiB
External HDD (2 TB)
= 2,000 GB · = 2,000,000 MB · = 1.82 TiB
Storage Capacity Examples
Floppy Disk (1.44 MB)
Could store ~700 pages of text · Obsolete since 2000s
CD (700 MB)
~80 minutes audio · ~150 typical photos
DVD (4.7 GB)
~2 hour movie · ~1,000 high-res photos
Blu-ray (25 GB)
~4 hour HD movie · ~5,000 high-res photos
iPhone 15 (128 GB)
~30,000 photos · ~32,000 songs · ~40 HD movies
YouTube (monthly)
~500 PB of video uploaded · = 500,000 TB
⚠️ The Storage Confusion: When you buy a 1 TB hard drive, it has 1,000,000,000,000 bytes
(decimal). Your computer shows it as ~931 GB because it uses binary (1,024-based) calculations. This is
why you "lose" about 7% of advertised capacity.
Data Transfer Speed Context
USB 2.0 Speed
480 Mbps = 60 MB/s · 1 GB file = ~17 seconds
USB 3.0 Speed
5 Gbps = 625 MB/s · 1 GB file = ~1.6 seconds
Home Internet (100 Mbps)
12.5 MB/s · 1 GB file = ~80 seconds
5G Mobile (1 Gbps)
125 MB/s · 1 GB file = ~8 seconds
NVMe SSD Read
3,500 MB/s · 1 GB file = ~0.29 seconds
Future Storage Units
Petabyte (PB)
1,000 TB · Used by large data centers and cloud providers
Exabyte (EB)
1,000 PB · Global internet traffic per day is ~1 EB
Zettabyte (ZB)
1,000 EB · Total global data is measured in zettabytes
Yottabyte (YB)
1,000 ZB · Theoretical future storage unit
Remember: 1 byte = 8 bits. Data transfer speeds are usually measured in bits per second (bps),
while storage capacity is measured in bytes. When comparing, divide bps by 8 to get bytes per second.