Data Storage converter
Kilobytes to Bits
Converting Kilobytes to Bits is a single multiplication when you know the factor. One KB equals 8,000 bit, so multiply the value in KB by 8,000. The calculator below works in both directions and accepts decimals.
Formula 1 KB = 8,000 bit
Need the other direction? Bits to Kilobytes.
How to convert Kilobytes to Bits
A decimal kilobyte is 1,000 bytes; a kibibyte is 1,024 bytes. A bit is one binary digit; eight bits make one byte.
To convert Kilobytes to Bits, multiply the value in KB by 8,000. For example, 10 KB × 8,000 = 80,000 bit. This works because the ratio between the two units is constant for every value in data storage.
Worked examples
| KB | bit |
|---|---|
| 1 KB | 8,000 bit |
| 2.5 KB | 20,000 bit |
| 5 KB | 40,000 bit |
| 10 KB | 80,000 bit |
| 25 KB | 200,000 bit |
| 50 KB | 400,000 bit |
| 100 KB | 800,000 bit |
Reverse conversion
| bit | KB |
|---|---|
| 1 bit | 1.2500e-04 KB |
| 5 bit | 6.2500e-04 KB |
| 10 bit | 0.00125 KB |
| 25 bit | 0.003125 KB |
| 50 bit | 0.00625 KB |
| 100 bit | 0.0125 KB |
When this conversion is useful
This is the calculation you need when you are sizing a backup, a download or a storage plan and the units are mixed. Because the factor is fixed, you can use the same number for a single measurement or for a batch: 1,000 KB is 8,000,000 bit.
Is the conversion exact?
It depends on the definition. This converter uses decimal units (1 kB = 1,000 bytes) and a bit-based base; binary units such as KiB and GiB are separate units in the list.
Reference: BIPM SI Brochure and NIST SP 811. Last reviewed: 2026-11-01.
KB to bit conversion chart
The chart lists the most requested values. For a value that is not here, use the converter at the top of the page.
| Kilobytes (KB) | Bits (bit) |
|---|---|
| 1 KB | 8,000 bit |
| 2 KB | 16,000 bit |
| 3 KB | 24,000 bit |
| 4 KB | 32,000 bit |
| 5 KB | 40,000 bit |
| 6 KB | 48,000 bit |
| 7 KB | 56,000 bit |
| 8 KB | 64,000 bit |
| 9 KB | 72,000 bit |
| 10 KB | 80,000 bit |
| 11 KB | 88,000 bit |
| 12 KB | 96,000 bit |
| 13 KB | 104,000 bit |
| 14 KB | 112,000 bit |
| 15 KB | 120,000 bit |
| 16 KB | 128,000 bit |
| 17 KB | 136,000 bit |
| 18 KB | 144,000 bit |
| 19 KB | 152,000 bit |
| 20 KB | 160,000 bit |
| 21 KB | 168,000 bit |
| 22 KB | 176,000 bit |
| 23 KB | 184,000 bit |
| 24 KB | 192,000 bit |
| 25 KB | 200,000 bit |
| 26 KB | 208,000 bit |
| 27 KB | 216,000 bit |
| 28 KB | 224,000 bit |
| 29 KB | 232,000 bit |
| 30 KB | 240,000 bit |
| 31 KB | 248,000 bit |
| 32 KB | 256,000 bit |
| 33 KB | 264,000 bit |
| 34 KB | 272,000 bit |
| 35 KB | 280,000 bit |
| 36 KB | 288,000 bit |
| 37 KB | 296,000 bit |
| 38 KB | 304,000 bit |
| 39 KB | 312,000 bit |
| 40 KB | 320,000 bit |
| 41 KB | 328,000 bit |
| 42 KB | 336,000 bit |
| 43 KB | 344,000 bit |
| 44 KB | 352,000 bit |
| 45 KB | 360,000 bit |
| 46 KB | 368,000 bit |
| 47 KB | 376,000 bit |
| 48 KB | 384,000 bit |
| 49 KB | 392,000 bit |
| 50 KB | 400,000 bit |
| 60 KB | 480,000 bit |
| 70 KB | 560,000 bit |
| 80 KB | 640,000 bit |
| 90 KB | 720,000 bit |
| 100 KB | 800,000 bit |
Frequently asked questions
How many Bits are in 1 Kilobytes?
1 KB equals 8,000 bit.
How do I convert Kilobytes to Bits?
Multiply the KB value by 8,000. Example: 25 KB = 200,000 bit.
What is 2.5 KB in bit?
2.5 KB = 20,000 bit.
Is the KB to bit conversion exact?
It depends on the definition. This converter uses decimal units (1 kB = 1,000 bytes) and a bit-based base; binary units such as KiB and GiB are separate units in the list.
Does the calculator work offline?
Yes. The conversion runs in your browser with JavaScript, so it works after the page has loaded, even without a connection.