Numarly

Data Storage Converter (All-in-One)

Convert between Bytes, KB, MB, GB, TB (Decimal & Binary)

Converted Values

Bytes (B): 1000000.00

Kilobyte (KB): 1000.00

Megabyte (MB): 1.00

Gigabyte (GB): 0.00

Terabyte (TB): 0.00

Formula

Decimal: 1 KB = 1000 Bytes

Binary: 1 KB = 1024 Bytes

What is it?

This data storage converter converts between bytes, kilobytes, megabytes, gigabytes, and terabytes, supporting both the decimal (base 1000) and binary (base 1024) standards.

Formula

  • Decimal: 1 KB = 1000 Bytes
  • Binary: 1 KB = 1024 Bytes

Formula Explanation

Storage manufacturers typically use the decimal standard (each unit is 1000× the previous), while operating systems and memory hardware often use the binary standard (each unit is 1024× the previous, since computers work in powers of 2). Selecting the right standard matters for getting an accurate conversion.

Example Calculation

Using the binary standard, 1 GB equals 1024³ = 1,073,741,824 bytes, while the decimal standard treats 1 GB as exactly 1,000,000,000 bytes.

How to Use

  1. Enter a value.
  2. Select the unit.
  3. Choose Decimal (1000) or Binary (1024) standard.
  4. View the converted result across all supported units instantly.

Benefits

  • Supports both decimal and binary standards in one tool.
  • Converts across five common storage units at once.
  • Helps explain why advertised and actual storage sizes differ.

Use Cases

  • Understanding why a "1 TB" drive shows less space in your operating system.
  • Converting file sizes for upload limits or storage planning.
  • Comparing storage specs between different vendors' listings.

What Your Result Means

The converted values show the same amount of data expressed in different units, using whichever standard (decimal or binary) you selected. Switching the standard changes the numeric results even though the underlying data amount stays the same.

Tips

  • Use the binary standard when working with RAM, since memory is always addressed in powers of 2.
  • Use the decimal standard when comparing to manufacturer-advertised drive capacities.
  • Remember that operating systems sometimes report binary values but label them with decimal unit names.

Common Mistakes

  • Assuming a "1 TB" drive will show exactly 1,000 GB in your operating system, when binary reporting typically shows less.
  • Mixing decimal and binary figures when comparing storage specs from different sources.
  • Confusing MB (megabyte, storage) with Mb (megabit, network speed) — an 8x difference.

FAQs

What is the difference between MB and MiB?

MB (megabyte) traditionally uses base 1000, while MiB (mebibyte) explicitly uses base 1024 — this calculator lets you choose either standard.

Why do storage sizes sometimes look smaller than expected?

Manufacturers typically advertise storage using the decimal (1000-based) standard, while operating systems often report it using the binary (1024-based) standard, causing an apparent difference.

Which standard should I use for RAM?

RAM is always addressed in binary (powers of 2), so use the Binary (1024) standard for memory-related conversions.

Is a megabit the same as a megabyte?

No — a byte is 8 bits, so a megabit (Mb, often used for internet speeds) is one-eighth the size of a megabyte (MB, used for file sizes).

How many gigabytes are in a terabyte?

Using the decimal standard, 1 TB = 1000 GB; using the binary standard, 1 TB = 1024 GB.

Why does my 1TB drive show around 931 GB in Windows?

The drive is manufactured using the decimal (1000-based) TB definition, but Windows reports capacity using binary (1024-based) GiB labeled as GB, which results in a smaller displayed number.

Storage capacity conventions vary by manufacturer and operating system.

Last updated: July 25, 2026