Enter your gigabyte (GB) value into the input field on UntangleTools Data Storage Converter, select GB as the source unit, and all outputs — including megabytes (MB) — appear instantly. For binary conversion (used by operating systems): 1 GB = 1,024 MB. For decimal (SI standard, used by hard drive manufacturers): 1 GB = 1,000 MB. Copy the MB result in one click.

In binary (base-2) — the standard used by Windows, macOS, and Linux for file sizes — 1 GB = 1,024 MB (technically 1 GiB = 1,024 MiB). In decimal (base-10, SI) — the standard used by storage manufacturers and most cloud providers — 1 GB = 1,000 MB. So 2 GB = 2,048 MB (binary) or 2,000 MB (decimal). The tool supports both modes.

Select TB as your source unit. The converter instantly shows: 1 TB = 1,024 GB (binary) or 1 TB = 1,000 GB (decimal), and 1 TB = 1,048,576 MB (binary) or 1 TB = 1,000,000 MB (decimal). For terabyte to megabyte (tb to mb) conversions, binary is typically correct for file-system planning; decimal is correct for matching manufacturer specs.

In binary: 1 MB = 1,024 KB (equivalently, 1 MiB = 1,024 KiB). In decimal: 1 MB = 1,000 KB. The kb to mb direction works in reverse: 1 KB = 0.000977 MB (binary) or 0.001 MB (decimal). The tool handles both kilobytes (KB) and kibibytes (KiB) as distinct selectable units.

Enter the byte count and select Bytes (B) as the source. Conversions: 1,048,576 bytes = 1 MB (binary) or 1,000,000 bytes = 1 MB (decimal). For gigabytes: 1,073,741,824 bytes = 1 GB (binary). This is useful for interpreting file sizes returned from APIs, databases, or operating system calls where raw byte counts are reported.

In binary: 1 TB = 1,024 GB (or 1 TiB = 1,024 GiB to be precise). In decimal: 1 TB = 1,000 GB. This explains why a 1 TB hard drive shows as ~931 GB in Windows — the drive uses decimal TB while the OS reports in binary GiB. The difference: 1,000 GB vs 1,024 GB ≈ 7.4% gap.

In binary: 1 PB = 1,024 TB (or 1 PiB = 1,024 TiB). In decimal: 1 PB = 1,000 TB. In reverse, 1 TB = 0.000977 PB (binary). Petabytes (PB) and petabits (Pb) are common in cloud-scale storage, data warehouses, and hyperscaler infrastructure planning. The converter covers PB, TiB, PiB and all related units.

This tool converts across the full hierarchy: bits (b) → bytes (B) → kilobytes (KB) / kibibytes (KiB) → megabytes (MB) / mebibytes (MiB) → gigabytes (GB) / gibibytes (GiB) → terabytes (TB) / tebibytes (TiB) → petabytes (PB) / pebibytes (PiB) → exabytes (EB). Enter any value, select any unit, and all conversions appear simultaneously — no repeated inputs needed.

Four steps: (1) Type or paste your number into the input field. (2) Select the source unit from the dropdown (bits, bytes, KB, MB, GB, TB, PB, or their IEC binary equivalents like KiB, MiB, GiB). (3) All output units update instantly — no button to press. (4) Click the Copy icon next to any result to copy it to your clipboard for immediate use.

Yes. The tool fully supports IEC binary prefix units: kibibyte (KiB = 1,024 bytes), mebibyte (MiB = 1,048,576 bytes), gibibyte (GiB = 1,073,741,824 bytes), tebibyte (TiB), and pebibyte (PiB). These are the technically correct units for binary-based storage measurements and are distinct from the decimal KB, MB, GB used by manufacturers. Both sets are selectable from the unit dropdown.

Both. The tool clearly separates SI decimal units (KB = 1,000 bytes, MB = 1,000,000 bytes — used by hard drive makers and cloud providers) from IEC binary units (KiB = 1,024 bytes, MiB = 1,048,576 bytes — used by operating systems for file sizes). Select the appropriate unit from the dropdown and the correct base is applied automatically.

Yes. Bits (b) and bytes (B) are both available as base units, and all their multiples — megabits (Mb), megabytes (MB), gigabits (Gb), gigabytes (GB) — are supported. 1 byte = 8 bits always. This is essential for networking calculations: internet speeds are in megabits per second (Mbps) while file sizes are in megabytes (MB). The tool handles both systems and their cross-conversion cleanly.

For computer science assignments, use binary conversion: multiply the gigabyte (GB or GiB) value by 1,024 to get megabytes (MB or MiB). Example: 4 GB = 4 × 1,024 = 4,096 MB. Use decimal (×1,000) only if the question explicitly specifies SI units or manufacturer-stated capacity. When in doubt, binary is the standard for OS and file system questions.

In binary: 2 GB = 2 × 1,024 = 2,048 MB. In decimal: 2 GB = 2 × 1,000 = 2,000 MB. For a 2 GB mobile data plan or file, your phone and OS will typically show it as 2,048 MB in binary. For matching what a storage card manufacturer quotes, use 2,000 MB (decimal). The difference is 48 MB — small but significant in precise calculations.

Multiply total gigabytes by 1,024 (binary) or 1,000 (decimal) to get megabytes. Example: 50 files averaging 0.2 GB each = 10 GB total = 10,240 MB (binary). Use this to check if a device with a stated capacity in MB has enough space. Remember: always apply the same base (binary or decimal) consistently across both the source size and target capacity to avoid errors.

UntangleTools Data Storage Converter is designed for accuracy and speed across all skill levels. For students: instant GB→MB, TB→MB, KB→bytes answers with worked logic. For engineers and developers: full IEC binary support (KiB, MiB, GiB, TiB, PiB), bits-to-bytes conversion, high-precision output, and one-click copy for pasting into code or reports. No login, works on mobile and desktop.

Three key differences: (1) All-unit simultaneous output — enter once and see bits, bytes, KB/KiB, MB/MiB, GB/GiB, TB/TiB, PB/PiB together, not one at a time. (2) Binary AND decimal — both IEC (×1,024) and SI (×1,000) standards are clearly supported, not conflated. (3) One-click copy per result row — designed for fast paste-into-work use, not just read-and-type.

Yes — completely free. No account, no subscription, no paywall. All units (bits, bytes, KB, MB, GB, TB, PB, and IEC binary equivalents) and all features (instant conversion, copy button, binary/decimal modes) are available at no cost on untangletools.com/unit/category/datastorage.

Yes. The converter is fully responsive and works on smartphones, tablets, and desktops. No app download required — open untangletools.com/unit/category/datastorage in any mobile browser (Chrome, Safari, Firefox). The layout adapts to small screens with tap-friendly Copy buttons. Paste values directly from other apps on mobile too.

Results are calculated using full JavaScript floating-point precision (64-bit IEEE 754), sufficient for any practical data storage conversion. The tool strictly separates decimal SI units (KB = 10³ bytes) from binary IEC units (KiB = 2¹⁰ bytes), so you get mathematically correct answers rather than the rounded approximations that conflate the two standards. For values up to exabyte (EB) scale, precision is maintained throughout.