Data Size Converter - DigiKitApp
Convert between byte, KB, MB, GB and TB units.
When should you use this?
Use this when you need to quickly convert a file size between units like MB, GB, KB, for instance to work out whether a storage plan is enough.
When shouldn't you use this?
The tool treats 1 GB as 1024 MB (binary). Elsewhere 1 GB = 1000 MB (decimal) is also used, which is why a manufacturer's stated storage and what your operating system shows can differ.
Step-by-step
- Enter the number you want to convert in the Value field. For decimals, use a dot, as in 1.5.
- Choose the unit you're starting from in From unit: b, kb, mb, gb or tb.
- Choose the unit you want the answer in from To unit.
- Click Run and read the result. To try another target unit, just change the list and run it again.
Example
You have a 1.5 GB video on your phone and your email service limits attachments in MB. Enter 1.5, set From to gb and To to mb, and run it. The tool multiplies by 1024, so the answer is 1536 (multiplying by 1000 would give 1500). Either way the file is far over a typical attachment limit, so a cloud sharing link is the way to send it.
The same approach gives a rough idea of how many photos fit on a USB stick. Find the average photo size in MB, convert the stick's capacity to MB, and divide.
Conversion factors and examples
The tool first converts the value to bytes, then divides by the target unit. The factors it uses: 1 KB = 1,024 bytes, 1 MB = 1,048,576 bytes, 1 GB = 1,073,741,824 bytes, 1 TB = 1,099,511,627,776 bytes. Examples: 1 GB = 1,024 MB; 2,048 KB = 2 MB; 1,536 B = 1.5 KB; 4.7 GB = 4,812.8 MB; 1 TB = 1,024 GB. The result is shown rounded to two decimal places: even though 500 MB is exactly 0.48828125 GB, the screen shows 0.49.
When reading the result
- Drive makers count 1 GB as 1,000 MB while this tool counts 1,024, which is why the capacity on a drive's box differs from what the system shows.
- The unit list is limited to B, KB, MB, GB and TB; there is no KiB/MiB notation.
- You can enter decimals; very small results can show as 0.00 because of the two-decimal rounding.
- The calculation runs in your browser.
Things to keep in mind
- Internet speeds are usually quoted in bits (Mbps), file sizes in bytes. One byte is 8 bits, so a 100 Mbps connection moves at most 12.5 MB per second.
- In this tool “b” means byte, not bit, and there are no bit units (like Mbps). For speed calculations, first divide the value by 8 to get bytes.
- A file's size and the space it takes on disk aren't always the same. File systems store data in blocks, so lots of tiny files use more room than their sizes add up to.
- The tool only uses base 1024. If you pass a result on, say so; the other side (a storage maker, for example) may assume base 1000.
Frequently asked questions
Is my data stored?
No, none of the data you enter is sent to a server or stored.
Is this tool free?
Yes, completely free and no account required.
How long does it take to get a result?
Most operations complete instantly; larger files may take a few seconds.