Convert Kilobytes to Kibibytes
Convert Kilobytes (KB) to Kibibytes (KiB) instantly and accurately.
Conversion Formula
KiB = KB × 0.9765625
About Kilobytes
A kilobyte (KB) = 1,000 bytes (SI). Used by all storage manufacturers (HDD, SSD, USB, SD) and endorsed by the IEC and FTC. Typical sizes: plain-text email 2-5 KB; HTML page 10-100 KB; Word document 10-30 KB. Ethernet MTU = 1,500 bytes ≈ 1.5 KB; jumbo frames 9 KB. MP3 at 128 kbit/s = 16 KB/s of audio. 1 KB = 1,000 bytes = 8,000 bits.
About Kibibytes
A kibibyte (KiB) = 2¹⁰ = 1,024 bytes (IEC 80000-13) - the binary kilobyte used by OS memory management. Linux/Windows page size = 4 KiB (4,096 bytes); default NTFS/ext4/APFS cluster size = 4 KiB. CPU L1-D cache: 16-64 KiB. Arduino AVR flash: 2-32 KiB. Windows labels KiB as 'KB'. 1 KiB = 1,024 bytes = 8,192 bits.
Quick Reference Table
| Kilobytes (KB) | Kibibytes (KiB) |
|---|---|
| 1 KB | 0.976563 KiB |
| 2 KB | 1.95313 KiB |
| 5 KB | 4.88281 KiB |
| 10 KB | 9.76563 KiB |
| 25 KB | 24.4141 KiB |
| 50 KB | 48.8281 KiB |
| 100 KB | 97.6563 KiB |