File size converter
10 MB to KB
10 MB equals 10,000 KB using the SI decimal definition. For binary-style comparison, 10 MiB equals 10,240 KiB.
Convert units
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1 MB = 1,000 KB. Decimal is the default; binary units have distinct names.
This changes the size representation, not the file. Need a smaller upload? Open file compression tools.
10 MB = 10,000 KB
Calculation working
- Result = input × source factor ÷ target factor
- 10 × 8,000,000 ÷ 8,000 = 10,000 KB
- Factors refer to the same base quantity. Rounding is applied to the display, not intermediate calculations.
Display: 10 significant digits. More digits do not make the original measurement more accurate.
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Batch conversion
One value per line, up to 200. Uses the selected MB → KB units and decimal basis. Invalid rows stay visible in the results and CSV.
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MB to KB conversion table
| MB | KB (decimal) | Separate binary comparison (MiB → KiB) | GB |
|---|---|---|---|
| 1 MB | 1,000 KB | 1 MiB = 1,024 KiB | 0.001 GB |
| 2 MB | 2,000 KB | 2 MiB = 2,048 KiB | 0.002 GB |
| 5 MB | 5,000 KB | 5 MiB = 5,120 KiB | 0.005 GB |
| 10 MB | 10,000 KB | 10 MiB = 10,240 KiB | 0.01 GB |
| 20 MB | 20,000 KB | 20 MiB = 20,480 KiB | 0.02 GB |
| 50 MB | 50,000 KB | 50 MiB = 51,200 KiB | 0.05 GB |
| 100 MB | 100,000 KB | 100 MiB = 102,400 KiB | 0.1 GB |
Definitions: NIST decimal and binary prefixes. Converting units changes the displayed size, not the file itself.
Is 1 MB 1,000 KB or 1,024 KB?
In SI decimal units, 1 MB is exactly 1,000 KB. The 1,024 relationship belongs to binary units: 1 MiB equals 1,024 KiB. Older software often displayed binary quantities while labeling them MB or KB, which is why both numbers still appear online.
Why can file sizes look different across devices?
Storage vendors normally advertise decimal capacity, while some operating systems and utilities historically reported binary-sized quantities with decimal labels. A drive can therefore show a smaller-looking number after formatting even though no physical capacity disappeared. File-system overhead can reduce usable space further.
MB, GB, Mbps and MB/s are not the same
MB and GB measure data size. Mbps measures megabits per second, while MB/s measures megabytes per second. Because one byte contains eight bits, an ideal 80 Mbps connection corresponds to 10 MB/s before protocol overhead and real-world losses.
Frequently asked questions
How many KB are in 1 MB?
1 MB = 1,000 KB in the SI decimal system.
How many MB are in 1 GB?
1 GB = 1,000 MB in decimal units. In binary units, 1 GiB = 1,024 MiB.
What is bigger, MB or GB?
GB is larger. One decimal gigabyte contains 1,000 megabytes.
How many bits are in a byte?
One byte contains 8 bits.