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Convert kilobytes to bytes
Instant, accurate KB → B conversion with a live converter, table and formula.
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1 kilobyte = 1000 bytes
1 byte = 0.001 kilobytes
kilobytes to bytes table
| kilobytes (KB) | bytes (B) |
|---|---|
| 0.5 | 500 |
| 1 | 1000 |
| 2 | 2000 |
| 5 | 5000 |
| 10 | 10000 |
| 20 | 20000 |
| 50 | 50000 |
| 100 | 100000 |
| 500 | 500000 |
| 1000 | 1000000 |
Formula
bytes = kilobytes × 1000.
Example
10 kilobytes = 10000 bytes.
What is a kilobyte?
A kilobyte (KB) is 1,000 bytes.
What is a byte?
A byte (B) is 8 bits, the basic unit of digital information (one character).
Real-world reference points
A photo is a few MB; an MP3 song ~4 MB; an HD movie ~4 GB; a modern phone stores 128+ GB.
| Reference | kilobytes | bytes |
|---|---|---|
| E-mail (text only) | 20 KB | 20,000 B |
| Smartphone photo | 3,000 KB | 3,000,000 B |
| MP3 song | 4,000 KB | 4,000,000 B |
| DVD capacity | 4,700,000 KB | 4,700,000,000 B |
| HD movie stream | 4,000,000 KB | 4,000,000,000 B |
Mistakes to avoid with data conversions
- Megabits vs megabytes: your '100 Mbps' connection downloads at ~12.5 MB/s — ISPs quote bits, files are bytes.
- Decimal vs binary units: drives are sold in decimal GB (10⁹), so a '1 TB' drive shows ~931 'GB' (GiB) in Windows.
- Assuming video size scales with length only — resolution and bitrate matter more than minutes.
Frequently asked questions
How many bytes in a kilobytes?+
1 kilobyte = 1000 bytes.
How do I convert kilobytes to bytes?+
Enter the value in the kilobytes box above and the bytes value appears instantly. You can also type in the bytes box to convert the other way.
Is this KB to B converter free?+
Yes — it is 100% free, needs no sign-up, and runs entirely in your browser.