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Storage Size Converter
Use this storage size converter to switch between bit and byte units across SI and IEC systems used in networking, files, memory specs, backups, and cloud capacity planning. Convert bit, byte, kilobit, megabit, gigabit, kibibit, mebibit, kilobyte, megabyte, gigabyte, kibibyte, mebibyte, gibibyte, and higher units up to exa scale. For related tools, visit Data Storage Converters.
Convert data storage units.
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Why Storage Size Conversion Is Error-Prone in Real Workflows
Storage values often mix bits and bytes, and also mix decimal SI prefixes (kilo, mega, giga) with binary IEC prefixes (kibi, mebi, gibi). A small label mismatch can lead to major planning errors in transfer estimates, backup retention, and capacity forecasting. A storage size converter prevents unit confusion by normalizing all values in one place before comparison.
Full Unit Coverage: bits, bytes, SI, IEC, and exa-scale values
This converter supports base units (bit, byte), SI bits/bytes (Kb to Eb, KB to EB), and IEC bits/bytes (Kib to Eib, KiB to EiB). It is useful for conversions like MB to Mb, GB to GiB, KiB to KB, and terabyte-scale to petabyte-scale normalization. The same table can be used for quick checks and for precise engineering calculations.
How the Storage Size Converter Works Step by Step
The tool converts each input through a byte-based baseline, then applies the factor of every target unit. Bit units use an 8-to-1 relationship with bytes, while SI and IEC prefixes use different multipliers (1000 vs 1024). If you are searching how to convert bits to bytes, MB to MiB, or GB to GiB step by step, this model applies consistently in both directions.
Where This Converter Is Used
Developers and system admins use it when reading logs and storage telemetry. Network and infrastructure teams use it when comparing bit-based transfer specs with byte-based file sizes. Cloud users apply it to align billed capacity, provisioned storage, and reported usage across tools that do not use the same unit family.
Accuracy Rules for Storage Unit Results
Always include the symbol with each value because Mb and MB are different units. Keep fewer decimals for dashboards and user-facing summaries, but keep higher precision for planning and automation. For stakeholder communication, showing both SI and IEC values side by side helps reduce misunderstanding.
Step-by-Step Storage Size Conversion Examples
Example 1: Convert 768 MB to MiB
This is a common small-to-mid scale conversion when app output is decimal MB but memory tooling reports binary MiB.
Given
$$768\,MB$$
Step-by-step
$$1\,MB = 10^6\,bytes$$ $$bytes = 768 \times 10^6 = 768{,}000{,}000\,bytes$$ $$MiB = \frac{768{,}000{,}000}{1024^2} = 732.421875\,MiB$$
Result
$$768\,MB \approx 732.421875\,MiB$$
Example 2: Convert 90 GiB to GB
This example is useful when binary system usage must be reported in decimal GB for dashboards or billing exports.
Given
$$90\,GiB$$
Step-by-step
$$1\,GiB = 1024^3\,bytes$$ $$bytes = 90 \times 1024^3 = 96{,}636{,}764{,}160\,bytes$$ $$GB = \frac{96{,}636{,}764{,}160}{10^9} = 96.63676416\,GB$$
Result
$$90\,GiB \approx 96.636764\,GB$$
Example 3: Convert 12.5 petabit to TiB
This scenario appears in high-volume network planning when line-rate capacity must be mapped to binary storage provisioning.
Given
$$12.5\,Pb$$
Step-by-step
$$1\,Pb = 10^{15}\,bits$$ $$bits = 12.5 \times 10^{15}\,bits$$ $$bytes = \frac{12.5 \times 10^{15}}{8} = 1.5625 \times 10^{15}\,bytes$$ $$TiB = \frac{1.5625 \times 10^{15}}{1024^4} = 1421.0854715202\,TiB$$
Result
$$12.5\,Pb \approx 1{,}421.085472\,TiB$$
Need a Storage Unit Added?
If your workflow uses a storage unit that is not currently available, you can request it to expand UtilityKits conversion coverage.
Suggest a Storage UnitFor more tools in this category, go to Data Storage Converters. You can also browse the full Converters collection.
Questions About Storage Size Conversion
Practical answers for converting bit, byte, SI, and IEC storage units correctly.
A bit is the smallest data unit, while a byte equals 8 bits. Many transfer rates use bits, while file sizes are often shown in bytes.
MB means megabyte and Mb means megabit. Because 1 byte = 8 bits, 1 MB equals 8 Mb.
Multiply by 8. For example, 100 MB equals 800 Mb.
Use GiB = GB × (1000^3 / 1024^3). For example, 1 GB is about 0.931323 GiB.
Use SI units (KB, MB, GB) for many product labels and decimal reporting. Use IEC units (KiB, MiB, GiB) when matching binary-based system and memory outputs.
Yes. It supports units up to exabit/exabyte and exbibit/exbibyte for large-scale planning and reporting.