Data Storage converter
Bits to Kilobytes
If you need to know how many Kilobytes one Bits contains, the answer is 1.2500e-04. The conversion is linear, so 10 bit is 0.00125 KB and 100 bit is 0.0125 KB. Use the converter for any other value.
Formula 1 bit = 1.2500e-04 KB
Need the other direction? Kilobytes to Bits.
How to convert Bits to Kilobytes
A bit is one binary digit; eight bits make one byte. A decimal kilobyte is 1,000 bytes; a kibibyte is 1,024 bytes.
To convert Bits to Kilobytes, multiply the value in bit by 1.2500e-04. For example, 10 bit × 1.2500e-04 = 0.00125 KB. This works because the ratio between the two units is constant for every value in data storage.
Worked examples
| bit | KB |
|---|---|
| 1 bit | 1.2500e-04 KB |
| 2.5 bit | 3.1250e-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 |
Reverse conversion
| KB | bit |
|---|---|
| 1 KB | 8,000 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 |
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 bit is 0.125 KB.
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.
bit to KB 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.
| Bits (bit) | Kilobytes (KB) |
|---|---|
| 1 bit | 1.2500e-04 KB |
| 2 bit | 2.5000e-04 KB |
| 3 bit | 3.7500e-04 KB |
| 4 bit | 5.0000e-04 KB |
| 5 bit | 6.2500e-04 KB |
| 6 bit | 7.5000e-04 KB |
| 7 bit | 8.7500e-04 KB |
| 8 bit | 0.001 KB |
| 9 bit | 0.001125 KB |
| 10 bit | 0.00125 KB |
| 11 bit | 0.001375 KB |
| 12 bit | 0.0015 KB |
| 13 bit | 0.001625 KB |
| 14 bit | 0.00175 KB |
| 15 bit | 0.001875 KB |
| 16 bit | 0.002 KB |
| 17 bit | 0.002125 KB |
| 18 bit | 0.00225 KB |
| 19 bit | 0.002375 KB |
| 20 bit | 0.0025 KB |
| 21 bit | 0.002625 KB |
| 22 bit | 0.00275 KB |
| 23 bit | 0.002875 KB |
| 24 bit | 0.003 KB |
| 25 bit | 0.003125 KB |
| 26 bit | 0.00325 KB |
| 27 bit | 0.003375 KB |
| 28 bit | 0.0035 KB |
| 29 bit | 0.003625 KB |
| 30 bit | 0.00375 KB |
| 31 bit | 0.003875 KB |
| 32 bit | 0.004 KB |
| 33 bit | 0.004125 KB |
| 34 bit | 0.00425 KB |
| 35 bit | 0.004375 KB |
| 36 bit | 0.0045 KB |
| 37 bit | 0.004625 KB |
| 38 bit | 0.00475 KB |
| 39 bit | 0.004875 KB |
| 40 bit | 0.005 KB |
| 41 bit | 0.005125 KB |
| 42 bit | 0.00525 KB |
| 43 bit | 0.005375 KB |
| 44 bit | 0.0055 KB |
| 45 bit | 0.005625 KB |
| 46 bit | 0.00575 KB |
| 47 bit | 0.005875 KB |
| 48 bit | 0.006 KB |
| 49 bit | 0.006125 KB |
| 50 bit | 0.00625 KB |
| 60 bit | 0.0075 KB |
| 70 bit | 0.00875 KB |
| 80 bit | 0.01 KB |
| 90 bit | 0.01125 KB |
| 100 bit | 0.0125 KB |
Frequently asked questions
How many Kilobytes are in 1 Bits?
1 bit equals 1.2500e-04 KB.
How do I convert Bits to Kilobytes?
Multiply the bit value by 1.2500e-04. Example: 25 bit = 0.003125 KB.
What is 2.5 bit in KB?
2.5 bit = 3.1250e-04 KB.
Is the bit to KB 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.