Byte / Data Size Converter
Type a size with or without a unit ("1.5 GiB", "700 MB", "12 Mbit") and see it in bits, bytes and every prefix from kilo to yotta with SI (×1000) and binary (×1024) values next to each other, plus nibbles and words. A transfer-time calculator turns any rate — Mbit/s, MB/s, Gbit/s, presets from 56k to NVMe — into hours, minutes and seconds with optional protocol overhead, and reference points (floppy, CD, DVD, Blu-ray, an hour of 4K) put the number in context.
| Prefix | SI (×1000) | Binary (×1024) | ||
|---|---|---|---|---|
| byte | 1,610,612,736 B | 1,610,612,736 B | ||
| k / Ki | 1,610,612.736 kB | 1,572,864 KiB | ||
| M / Mi | 1,610.6127 MB | 1,536 MiB | ||
| G / Gi | 1.6106 GB | 1.5 GiB | ||
| T / Ti | 0.0016106 TB | 0.0014648 TiB | ||
| P / Pi | 0.0000016106 PB | 0.0000014305 PiB | ||
| E / Ei | 0.000000001611 EB | 0.000000001397 EiB | ||
| Z / Zi | 1.6106e-12 ZB | 1.3642e-12 ZiB | ||
| Y / Yi | 1.6106e-15 YB | 1.3323e-15 YiB |
| 3.5" floppy | 1.44 MB | 1,092 × |
| MP3 song | ~4 MB at 128 kbps | 403 × |
| RAW photo | ~25 MB, 24 MP | 64.42 × |
| CD-ROM | 700 MiB | 2.19 × |
| 1080p hour | ~3 GB at 6.5 Mbps | 53.69% |
| DVD | 4.7 GB single layer | 34.27% |
| 4K hour | ~20 GB at 45 Mbps HEVC | 8.05% |
| Blu-ray | 25 GB single layer | 6.44% |
| BD-XL | 100 GB | 1.61% |
| LTO-9 tape | 18 TB native | 0.01% |
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How to use Byte / Data Size Converter
- 1Enter a size, with a unit in the text or from the dropdown.
- 2Read the SI and binary columns side by side (toggle bits if you need them).
- 3Set a transfer rate or pick a preset to get the transfer time.
- 4Adjust decimal places in Options and copy everything at once.
About Byte / Data Size Converter
Type a size with or without a unit ("1.5 GiB", "700 MB", "12 Mbit") and see it in bits, bytes and every prefix from kilo to yotta with SI (×1000) and binary (×1024) values next to each other, plus nibbles and words. A transfer-time calculator turns any rate — Mbit/s, MB/s, Gbit/s, presets from 56k to NVMe — into hours, minutes and seconds with optional protocol overhead, and reference points (floppy, CD, DVD, Blu-ray, an hour of 4K) put the number in context.
Byte / Data Size Converter is part of FizzKit — a collection of focused developer and ad-tech tools. Because everything runs locally, it works offline once loaded and never exposes your data to a remote server.