Byte Unit Converter

How to Use

Enter a numeric value, select the input unit (B, KB, MB, GB, TB, PB), and choose between binary (1024-based) or decimal (1000-based) standard. All conversions are displayed instantly. Click copy next to any result.

Binary vs Decimal

Binary units (KiB, MiB, GiB) use 1024 as the conversion factor, matching how computers address memory. Decimal units (KB, MB, GB) use 1000, matching how storage manufacturers label drives. A 500 GB drive (decimal) is approximately 465 GiB (binary). The IEC standard recommends KiB/MiB/GiB for binary and KB/MB/GB for decimal to avoid confusion.

Use Cases

• Cloud storage pricing: AWS S3 and GCS charge per GB — convert total file sizes to TB or PB for cost estimation
• Bandwidth calculation: convert monthly transfer from Mbps to GB/month to choose the right CDN or server plan
• File size estimation: sum up image assets or log files to plan disk capacity for your application
• Memory spec comparison: accurately compare RAM sizes (GiB vs GB) when evaluating hardware purchases

Common Real-World Sizes

• One smartphone photo: approximately 3-5 MB (HEIF format: 1-2 MB)
• One MP3 song (4 min): approximately 4-8 MB (128-256 kbps bitrate)
• One hour of HD video: approximately 3-5 GB (1080p, H.264)
• One hour of 4K video: approximately 20-30 GB (2160p, H.265)
• A typical web page: approximately 2-5 MB (including images, JS, and CSS)

Privacy

All conversions happen entirely in your browser. No data is sent to a server, stored, or logged.