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Data Storage Converter – MB, GB, TB, MiB and GiB

Convert bits, bytes, and storage sizes between decimal and binary units.

Storage size

Enter a value and choose the units to compare.

Result

The same data size in decimal and binary units

Converted storage
0.9313225746 GiB

Details

Bytes
1000000000 B
Kilobytes
1000000 kB
Megabytes
1000 MB
Gigabytes
1 GB
Terabytes
0.001 TB
Kibibytes
976562.5 KiB
Mebibytes
953.6743164 MiB
Gibibytes
0.9313225746 GiB
Tebibytes
0.0009094947018 TiB

Analysis & guidance

  • A new drive

    A 1 TB drive contains one trillion bytes. A lower-looking figure usually reflects different units, not missing storage.

  • Files and cloud plans

    Check whether a service uses GB or GiB before comparing quotas and prices.

  • Transfer speed

    100 Mbit/s is at most 12.5 MB/s before protocol overhead and other losses.

Common questions

How many MB are in 1 GB?

In decimal storage, 1 GB is exactly 1,000 MB. In binary units, 1 GiB is exactly 1,024 MiB.

What is the difference between GB and GiB?

GB uses powers of 1,000 and GiB powers of 1,024, making one GiB larger than one GB.

How many bits are in a byte?

One byte is exactly 8 bits. Uppercase B means byte; lowercase b means bit.

Decimal storage

Drive makers use decimal units: 1 GB is one billion bytes and 1 TB is one trillion bytes.

Binary storage

Binary units use steps of 1,024. One GiB is 1,073,741,824 bytes, so a marketed 1 TB drive is about 0.91 TiB.

Bits and bytes

One byte contains 8 bits. Network speed is often measured in bits per second, while file size is measured in bytes.

Data storage: MB, GB, TB, MiB and GiB explained

A drive sold as 1 TB may appear as roughly 931 GiB on a computer. This usually does not mean capacity is missing. The manufacturer and software may simply use different unit systems.

Decimal units

Decimal kB, MB, GB, and TB increase in steps of 1,000. One GB is 1,000,000,000 bytes and one TB is 1,000,000,000,000 bytes. Drive packaging and many cloud services use these definitions.

Binary units

KiB, MiB, GiB, and TiB increase in steps of 1,024. One GiB is 1,073,741,824 bytes and one TiB is 1,099,511,627,776 bytes.

A GiB is larger than a GB, so the same bytes produce a smaller number of GiB. A marketed 1 TB drive is approximately 0.909 TiB or 931.3 GiB.

Ambiguous labels

Some operating systems and programs have historically displayed “GB” while calculating in binary units. When precision matters, inspect both the label and the underlying byte count rather than relying on the abbreviation alone.

Bits and bytes

One byte is exactly 8 bits. Uppercase B means byte and lowercase b means bit. A 100 Mbit/s internet connection therefore has a theoretical maximum of 12.5 MB/s before protocol overhead, wireless conditions, and other losses.

Capacity versus free space

Formatting, file systems, recovery partitions, and installed software use storage. A difference in free space can therefore combine unit conversion with data already occupying the drive.

Cloud plans and backups

Check how a provider defines GB, whether file history counts towards the quota, and whether compression changes the stored size. The converter compares data quantities; it cannot determine a service’s billing rules.

When two systems appear to disagree, compare their byte counts. Bytes are the shared base and remove the decimal-versus-binary ambiguity.

How to read this calculator

These results are meant as guidance. They are based on rules, assumptions, and simplified models that can differ from your exact real-world situation.

Estimate, not a legal decision

Use the result as decision support and planning help. For high-stakes choices, confirm the details with the relevant authority, lender, employer, or adviser.

Methodology

Each calculator uses defined inputs, assumptions, and logic. We explain the broader approach on the methodology page.

Read methodology

Sources and updates

Important calculators should be traceable back to official rules, public guidance, or other clearly stated references.

Read about sources

Common questions

Length and Area Unit Converter

A 1 TB drive contains one trillion bytes. A lower-looking figure usually reflects different units, not missing storage.

Length and area in one straightforward tool

Convert units

Time Converter – seconds, minutes, hours and days

100 Mbit/s is at most 12.5 MB/s before protocol overhead and other losses.

Turn raw seconds into a clear duration

Convert time

Power converter

Use Power converter to compare the next part of the same scenario.

Choose input and output units to get instant, precise power conversions.

Open power converter