Data Storage Converter
Type any value — all units update instantly
What is data storage conversion?
Data storage units measure digital information. The base unit is the bit. Larger units — bytes, kilobytes, megabytes, gigabytes, terabytes — are used for file sizes and storage capacity. There are two standards: binary (1024-based, used by OS) and decimal (1000-based, used by manufacturers).
Formula used
Binary (OS standard):
1 KiB = 1,024 B | 1 MiB = 1,048,576 B | 1 GiB = 1,073,741,824 B
Decimal (manufacturer standard):
1 KB = 1,000 B | 1 MB = 1,000,000 B | 1 GB = 1,000,000,000 B
This is why a '256 GB' phone shows only ~238 GB in Settings.
How to use this calculator
- Type any value into any field
- All other units update instantly
Example
Common file sizes:
| File type | Typical size |
|---|---|
| WhatsApp photo | 100–500 KB |
| MP3 song (4 min) | 4–8 MB |
| HD movie (2 hrs) | 4–8 GB |
| Full phone backup (128 GB phone) | ~119 GB (OS view) |
Frequently asked questions
Manufacturers use 1 GB = 1 billion bytes. Your phone's OS uses 1 GiB = 1,073,741,824 bytes. 256 × (1B ÷ 1.0737B) ≈ 238 GB displayed.
Mb = megabit (lowercase b = bit). MB = megabyte (uppercase B = byte). 1 MB = 8 Mb. Internet speeds are in Mbps; file sizes are in MB.
4 GB = 32 Gb. At 100 Mbps: 32,000 Mb ÷ 100 = 320 seconds ≈ 5.3 minutes (theoretical max; real speeds vary).