File Size Converter
Binary (1024)Decimal (1000)
B
1,000,000,000
KB
1,000,000
MB
1,000
GB
1
TB
0.001
PB
1.00e-6
Storage Planner
How many items fit in a given storage space?
12,800items fit
100.0% used ยท 0 B remaining
Common File Sizes
| Type | Typical Size | In Bytes |
|---|---|---|
| Plain text email | ~20 KB | 20,000 |
| Average photo (JPEG) | ~5 MB | 5,000,000 |
| RAW photo | ~25 MB | 25,000,000 |
| MP3 song (4 min) | ~4 MB | 4,000,000 |
| FLAC song (4 min) | ~30 MB | 30,000,000 |
| HD movie (1080p) | ~4.5 GB | 4,500,000,000 |
| 4K movie | ~20 GB | 20,000,000,000 |
| AAA video game | ~80 GB | 80,000,000,000 |
| macOS install | ~13 GB | 13,000,000,000 |
| Windows 11 ISO | ~5.5 GB | 5,500,000,000 |
Quick Tips
Binary vs Decimal
Hard drive manufacturers use decimal (1 GB = 1,000,000,000 bytes). Operating systems typically use binary (1 GiB = 1,073,741,824 bytes). This is why your 500 GB drive shows ~465 GiB.
Storage Labels
IEC standard uses KiB, MiB, GiB for binary (1024-based) and KB, MB, GB for decimal (1000-based). Most software still uses KB/MB/GB for both, which can be confusing.
Cloud Storage
Free tiers: Google Drive 15 GB, iCloud 5 GB, OneDrive 5 GB, Dropbox 2 GB. Photos and videos are usually the biggest space consumers.
Memory vs Storage
RAM (memory) is measured the same way but is much faster and more expensive. 8 GB RAM is common for laptops; 256 GB-1 TB is typical for storage.