Data Storage Converter
Convert data sizes between bits, bytes, decimal units, and binary units.
Converter guide
About Data Storage Converter
The Data Storage Converter changes quantities between bits, bytes, and decimal or binary storage units. It is useful for comparing file sizes, memory capacity, and product labels, where unit prefixes can use different bases and cause apparent mismatches.
How to use this converter
- 1Enter the data amount and select its current unit.
- 2Choose the target unit. Check whether the prefix is decimal, such as MB, or binary, such as MiB.
- 3Read the converted value and compare like with like when checking a drive, file, memory module, or transfer estimate.
Conversion method and technical details
A byte contains eight bits. Decimal prefixes use powers of 1,000, so 1 MB is 1,000,000 bytes. Binary prefixes use powers of 1,024, so 1 MiB is 1,048,576 bytes. The converter uses the selected unit definitions rather than assuming MB and MiB are interchangeable.
Worked real-world example
One gigabyte in decimal units is 1,000 MB, while one gibibyte is 1,024 MiB. The two figures describe different quantities even though people sometimes use the names loosely.
Common scenarios and use cases
Translate storage labels, compare file sizes across operating systems, and convert byte counts for documentation or estimates.
For a dependable comparison, confirm both unit labels, keep the original measurement with the converted value, and use the precision required by the task. The converter changes the representation of a value; it does not measure the item or decide which standard your project requires.
Important details and limitations
Operating systems, manufacturers, and software may display different conventions or reserve capacity for formatting. This converter does not measure available space or explain filesystem overhead. Confirm the exact unit symbol shown in the source.
Check the output unit as well as the number. If the result will be reused in another calculation, retain full precision where possible and round only at the end. For measurements governed by a technical specification, use the standard and tolerance required by that document.
Frequently asked questions
How many bits are in a byte?
One byte is eight bits.
Why is a drive advertised at a different size than my computer shows?
The manufacturer may use decimal units while the operating system displays binary-based units.
Are MB and MiB the same?
No. MB is decimal; MiB is binary.
Why can the converted number look much larger or smaller?
Different units use different scales. A measurement can have a larger number in a smaller unit and still describe the same quantity. Check the source and target unit labels before comparing values.
How many decimal places should I keep?
Keep enough precision for the job and avoid rounding values between steps. Round the final displayed answer to match the specification, document, or measuring tool you are using.