Kilobytes to Bytes
Convert kilobytes to bytes instantly. 1 KB = 1,000 B. Includes the exact factor, a conversion table of common values and the definition of both units.
How to convert kilobytes to bytes
To convert kilobytes to bytes, multiply by 1,000. The relationship is fixed, so the same factor works for any quantity — there is nothing to look up and nothing that changes with temperature, location or context.
B = KB × 1,000
Kilobytes to Bytes conversion table
The values people look up most often, rounded for reading. Use the calculator above for anything in between.
| Kilobytes | Bytes |
|---|---|
| 1 KB | 1,000 B |
| 2 KB | 2,000 B |
| 3 KB | 3,000 B |
| 5 KB | 5,000 B |
| 10 KB | 10,000 B |
| 20 KB | 20,000 B |
| 25 KB | 25,000 B |
| 50 KB | 50,000 B |
| 100 KB | 100,000 B |
| 500 KB | 500,000 B |
| 1,000 KB | 1,000,000 B |
What is a kilobyte?
A thousand bytes in the SI sense, as used by storage manufacturers.
What is a byte?
Eight bits, the smallest addressable unit in most computers.
The formula
B = KB × 1,000
Every result on this page comes from this formula. Nothing is rounded until the final display, so figures match a spreadsheet to the cent.
How to use the Kilobytes to Bytes
- Type the number of kilobytes you want to convert.
- Read the result in bytes straight away — there is no button to press.
- Check the table below for the values that come up most often, or reverse the conversion with the linked bytes to kilobytes page.
Kilobytes to Bytes — frequently asked questions
How many bytes are in a kilobyte?
One kilobyte equals 1,000 B. B = KB × 1,000
What is the formula to convert kilobytes to bytes?
The formula is B = KB × 1,000. It is an exact definition rather than an approximation, so the conversion never drifts no matter how large the number.
How do I convert bytes back to kilobytes?
Divide instead of multiplying: one byte is 0.001 KB. The reverse converter is linked in the related tools list.
Is this conversion exact?
Yes. Both units are defined against the same base unit by international agreement, so the factor is exact — any rounding you see is only in the display, which you can widen by entering more decimal places.
Is this kilobytes to bytes free to use?
Yes. Every calculator on the site is free, needs no sign-up, and runs entirely in your browser, so your figures never leave your device.
What people search for
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About this calculator
Written and reviewed by The Samsung Calculator editorial team. Every calculator is written against a published formula, reviewed against at least one independent reference implementation, and dated when it changes.
Last reviewed August 19, 2026 · Calculation runs client-side · No data collected · Report an error