Data Storage Converter
This data storage converter turns a value in one storage unit into another, covering bits, bytes, decimal units (KB, MB, GB, TB), and binary units (KiB, MiB, GiB, TiB). Enter a value, pick the source unit, pick the target unit, and the tool shows the converted figure along with the conversion path it used. It is built for the moment a hard drive, cloud plan, download size, or spec sheet lists a number in a unit that does not match what you are comparing it against, so you can get a clean, correct answer without doing the byte math by hand. For example, 1 GiB equals exactly 1024 MiB, while 500 GB equals about 465.661287 GiB once decimal gigabytes are translated into binary gibibytes, and that gap is exactly the kind of mismatch this tool is meant to resolve.
Quick answer
Supports both decimal storage units (KB, MB, GB, TB), which use powers of 1000, and binary storage units (KiB, MiB, GiB, TiB), which use powers of 1024.
What this tells you
- •Supports both decimal storage units (KB, MB, GB, TB), which use powers of 1000, and binary storage units (KiB, MiB, GiB, TiB), which use powers of 1024.
- •Uses bytes as the shared base unit, so every conversion runs through a single internal value no matter which two units you pick.
- •Handles bits and bytes directly, which matters for network speeds that are usually quoted in megabits per second rather than megabytes.
- •Results are rounded to 6 decimal places for display, which keeps the output readable while staying precise enough for spec comparisons and storage planning.
- •Works the same whether you are converting a small file size in kilobytes or a large drive capacity in terabytes and tebibytes.
How to Use
- 1Enter the storage value you want to convert. Decimals are fine, so values like 2.5 or 0.75 work.
- 2Select the source unit in the From field, such as gb for a listed drive capacity or mib for a file size shown by your operating system.
- 3Select the target unit in the To field, such as gib if you need the binary equivalent of a decimal spec.
- 4Click Convert to see the converted value, the unit labels, and the conversion path the tool used.
- 5If the number feeds into a purchase decision, backup plan, or bandwidth budget, double-check which unit standard the source document actually used before relying on the converted figure.
How It Works
Formula
Converted value = input × (source-to-byte factor) ÷ (target-to-byte factor)The converter first multiplies your input by a fixed factor to express it in bytes, the common base unit for every storage size. It then divides that byte value by the target unit's factor to produce the final number. Decimal units step up by exactly 1000 each time (1 KB = 1000 bytes, 1 MB = 1000 KB, and so on), while binary units step up by exactly 1024 each time (1 KiB = 1024 bytes, 1 MiB = 1024 KiB, and so on). That difference between 1000 and 1024 is why a decimal gigabyte and a binary gibibyte are not the same size, even though people often use GB to mean both in casual conversation.
Calculation note: values are processed in the order shown above, using the current input units.
Worked Examples
GiB to MiB
One gibibyte equals 1024 mebibytes because binary storage units always step up by a factor of 1024. This is the conversion to reach for when a drive's binary capacity needs to be broken into smaller binary chunks, such as sizing chunks of a backup image.
500 GB drive capacity to GiB
Drive manufacturers list capacity in decimal gigabytes, so a 500 GB drive holds 500,000,000,000 bytes. Dividing that by 1,073,741,824, the byte count in a binary gibibyte, gives about 465.661287 GiB, which is close to the usable capacity your operating system reports. This is the single most common source of the missing storage space people notice after buying a new drive.
1 TB to TiB
A decimal terabyte is 1,000,000,000,000 bytes, while a tebibyte is 1,099,511,627,776 bytes. Converting 1 TB into TiB gives about 0.909495 TiB, showing roughly a 9 percent gap between the two standards at the terabyte scale. That gap grows in absolute terms as capacities get larger, which is why the difference matters more on large drives and cloud storage tiers than on small files.
2500 MB to KB
Staying within the decimal system keeps the math simple because every step is a clean multiple of 1000. 2500 MB converts to 2,500,000 KB, which is useful when a download manager or media tool reports size in megabytes but a form field or script expects kilobytes.
8000 bit to byte
A byte is 8 bits, so dividing 8000 bits by 8 gives 1000 bytes. This conversion matters most for network context, since internet plans and download speeds are quoted in bits per second while file sizes on disk are measured in bytes, so a 100 Mbps connection does not move 100 MB of data in one second.
1 TiB to GB
A tebibyte holds 1,099,511,627,776 bytes. Converting that into decimal gigabytes gives about 1099.511628 GB, which is the figure to use when a NAS or server spec sheet reports binary tebibytes but you need to compare it against a decimal-gigabyte cloud storage quota.
Common Storage Unit Reference
How major decimal and binary storage units compare to one byte.
| Unit | Bytes | Standard |
|---|---|---|
| KB | 1,000 | Decimal (powers of 1000) |
| MB | 1,000,000 | Decimal (powers of 1000) |
| GB | 1,000,000,000 | Decimal (powers of 1000) |
| TB | 1,000,000,000,000 | Decimal (powers of 1000) |
| KiB | 1,024 | Binary (powers of 1024) |
| MiB | 1,048,576 | Binary (powers of 1024) |
| GiB | 1,073,741,824 | Binary (powers of 1024) |
| TiB | 1,099,511,627,776 | Binary (powers of 1024) |
Decimal units (KB, MB, GB, TB) are standard in marketing and storage device labeling. Binary units (KiB, MiB, GiB, TiB) match how operating systems typically calculate free space.
Why decimal and binary storage units don't match
Storage manufacturers label capacity using decimal units because the math is simpler and the numbers look larger. A 1 TB drive means exactly 1,000,000,000,000 bytes under that convention. Operating systems, on the other hand, have historically calculated free space using binary units, where 1 TiB equals 1,099,511,627,776 bytes. Since older systems often displayed binary values but used decimal labels like GB, users saw a 1 TB drive show up as roughly 931 GB of usable space, and the missing capacity looked like a defect when it was actually a unit mismatch.
The gap between the two systems grows with scale. At the kilobyte level the difference between 1000 and 1024 bytes is small enough to ignore. At the terabyte level, the same percentage gap represents tens of gigabytes of apparent missing space. This is why the confusion shows up mostly with drives, cloud storage plans, and large file transfers rather than with small downloads or short documents.
Modern software increasingly labels binary values correctly with KiB, MiB, GiB, and TiB, following the standard set by the International Electrotechnical Commission. Even so, many interfaces still show GB or MB while actually calculating in binary, so the safest approach is to check which convention a specific tool, spec sheet, or invoice is using rather than assuming.
This converter keeps both systems available side by side so you can move between them directly. That is useful for comparing a purchased drive's advertised capacity against what your file manager reports, sizing a cloud backup against a stated storage quota, or converting a network transfer speed given in bits into a file size measured in bytes.
Common mistakes
- Assuming GB and GiB are interchangeable. A decimal gigabyte is 1,000,000,000 bytes while a binary gibibyte is 1,073,741,824 bytes, a difference of about 7.4 percent.
- Confusing bits and bytes when reading network speeds. An internet plan listed as 100 Mbps moves about 12.5 megabytes per second, not 100 megabytes per second, because the speed is quoted in bits.
- Reading an operating system's reported free space as if it uses the same unit standard as the drive's advertised decimal capacity, which explains most missing-storage confusion.
- Rounding intermediate results before converting again. Convert directly from the original unit to the final target unit instead of chaining several manually rounded steps.
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