Data Storage converter
Kilobytes to Megabytes
Kilobytes and Megabytes measure the same quantity in different unit systems. The relationship is 1 KB = 0.001 MB, which gives 0.001 MB per KB. Below you can convert any value, check a worked example and read the full chart.
Formula 1 KB = 0.001 MB
Need the other direction? Megabytes to Kilobytes.
How to convert Kilobytes to Megabytes
A decimal kilobyte is 1,000 bytes; a kibibyte is 1,024 bytes. A decimal megabyte is 10^6 bytes; a mebibyte is 2^20 bytes.
To convert Kilobytes to Megabytes, multiply the value in KB by 0.001. For example, 10 KB × 0.001 = 0.01 MB. This works because the ratio between the two units is constant for every value in data storage.
Worked examples
| KB | MB |
|---|---|
| 1 KB | 0.001 MB |
| 2.5 KB | 0.0025 MB |
| 5 KB | 0.005 MB |
| 10 KB | 0.01 MB |
| 25 KB | 0.025 MB |
| 50 KB | 0.05 MB |
| 100 KB | 0.1 MB |
Reverse conversion
| MB | KB |
|---|---|
| 1 MB | 1,000 KB |
| 5 MB | 5,000 KB |
| 10 MB | 10,000 KB |
| 25 MB | 25,000 KB |
| 50 MB | 50,000 KB |
| 100 MB | 100,000 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 1 MB.
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 MB 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) | Megabytes (MB) |
|---|---|
| 1 KB | 0.001 MB |
| 2 KB | 0.002 MB |
| 3 KB | 0.003 MB |
| 4 KB | 0.004 MB |
| 5 KB | 0.005 MB |
| 6 KB | 0.006 MB |
| 7 KB | 0.007 MB |
| 8 KB | 0.008 MB |
| 9 KB | 0.009 MB |
| 10 KB | 0.01 MB |
| 11 KB | 0.011 MB |
| 12 KB | 0.012 MB |
| 13 KB | 0.013 MB |
| 14 KB | 0.014 MB |
| 15 KB | 0.015 MB |
| 16 KB | 0.016 MB |
| 17 KB | 0.017 MB |
| 18 KB | 0.018 MB |
| 19 KB | 0.019 MB |
| 20 KB | 0.02 MB |
| 21 KB | 0.021 MB |
| 22 KB | 0.022 MB |
| 23 KB | 0.023 MB |
| 24 KB | 0.024 MB |
| 25 KB | 0.025 MB |
| 26 KB | 0.026 MB |
| 27 KB | 0.027 MB |
| 28 KB | 0.028 MB |
| 29 KB | 0.029 MB |
| 30 KB | 0.03 MB |
| 31 KB | 0.031 MB |
| 32 KB | 0.032 MB |
| 33 KB | 0.033 MB |
| 34 KB | 0.034 MB |
| 35 KB | 0.035 MB |
| 36 KB | 0.036 MB |
| 37 KB | 0.037 MB |
| 38 KB | 0.038 MB |
| 39 KB | 0.039 MB |
| 40 KB | 0.04 MB |
| 41 KB | 0.041 MB |
| 42 KB | 0.042 MB |
| 43 KB | 0.043 MB |
| 44 KB | 0.044 MB |
| 45 KB | 0.045 MB |
| 46 KB | 0.046 MB |
| 47 KB | 0.047 MB |
| 48 KB | 0.048 MB |
| 49 KB | 0.049 MB |
| 50 KB | 0.05 MB |
| 60 KB | 0.06 MB |
| 70 KB | 0.07 MB |
| 80 KB | 0.08 MB |
| 90 KB | 0.09 MB |
| 100 KB | 0.1 MB |
Frequently asked questions
How many Megabytes are in 1 Kilobytes?
1 KB equals 0.001 MB.
How do I convert Kilobytes to Megabytes?
Multiply the KB value by 0.001. Example: 25 KB = 0.025 MB.
What is 2.5 KB in MB?
2.5 KB = 0.0025 MB.
Is the KB to MB 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.