Data Size Converter – MB, GB, TB, Binary & Decimal Units

A data size converter instantly transforms digital storage measurements between units (bytes, KB, MB, GB, TB). Essential for file transfers, cloud storage planning, download estimates, and understanding bandwidth. Handles both decimal (base-10: KB/MB/GB) and binary (base-2: KiB/MiB/GiB) standards.

Decimal units follow base-10: 1 KB = 1,000 bytes; 1 MB = 1,000 KB; 1 GB = 1,000 MB; 1 TB = 1,000 GB. These are standard marketing units. Binary units follow base-2: 1 KiB = 1,024 bytes; 1 MiB = 1,024 KiB. Computers often use binary internally, creating apparent storage discrepancies.

KB/MB/GB are decimal units (base-10), while KiB/MiB/GiB are binary units (base-2). 1 KB = 1,000 bytes; 1 KiB = 1,024 bytes. Same with MB/MiB and GB/GiB. This 2.4% difference compounds: 1 TB disk shows as ~931 GiB because manufacturers use decimal, OSes display binary.

Storage manufacturers advertise capacity in decimal units (1 TB = 1,000,000,000,000 bytes). Operating systems display storage using binary interpretation (1 TiB = 1,099,511,627,776 bytes). Converting: 1 TB ≈ 0.91 TiB (~931 GiB). Completely normal; drive not defective—just unit system mismatch.

Decimal: 1 GB = 1,000,000,000 bytes. Binary: 1 GiB = 1,073,741,824 bytes. Choose based on context: network providers & storage brands use GB (decimal). Operating systems & technical documentation use GiB (binary). Always verify the unit system in specs.

Both are correct depending on the system. Decimal (SI standard): 1 MB = 1,000 KB. Binary (computer memory): 1 MiB = 1,024 KiB. Confusion: many websites incorrectly mix systems. High-quality tools should clearly separate MB vs MiB to prevent miscalculations.

Yes. A reliable converter must support both decimal (KB/MB/GB/TB) and binary (KiB/MiB/GiB/TiB) units. Binary is critical for accurate RAM calculations, storage sizing, and technical documentation. Always check converter unit support before trusting results.

1 byte (B) = 8 bits (b). Internet speed measured in bits per second (Mbps/Gbps). File sizes measured in bytes (MB/GB). 100 Mbps internet speed ≈ 12.5 MB/s maximum download rate (100 ÷ 8). This unit confusion is why downloads feel slower than advertised speed.

Internet speeds use bits per second (Mbps), files use bytes (MB). Since 1 byte = 8 bits: MB/s ≈ Mbps ÷ 8. Example: 200 Mbps speed = ~25 MB/s theoretical download. Real speed lower due to network overhead & server limits. Convert using this tool to estimate actual download times.

Divide Mbps by 8 to get MB/s. Example: 160 Mbps = 20 MB/s theoretical. Example: 100 Mbps = 12.5 MB/s. Most users assume 100 Mbps = 100 MB/s—that's incorrect. This conversion explains why your 'fast' internet downloads files slowly.

Decimal (most common): 1 GB = 1,000 MB. Binary (technical accuracy): 1 GiB = 1,024 MiB. Storage manufacturers use decimal; computers display binary. This difference compounds: 1 TB decimal = 1,000 GB, but appears as 931 GiB on disk (1,000 ÷ 1.024).

Decimal: 1 TB = 1,000 GB. Binary: 1 TiB = 1,024 GiB. Cloud providers charge per decimal GB; your computer counts binary GiB. A 1 TB cloud backup shows ~931 GiB locally. Always convert when comparing advertised vs. Actual storage capacity.

Decimal: 1 MB = 1,000,000 bytes. Binary: 1 MiB = 1,048,576 bytes. Difference: ~4.8%. Developers need this conversion for buffer allocation, file uploads/downloads, API payload sizing. Always use converter to verify byte-level calculations.

Yes. Uses internationally standardized decimal (SI: 1000-base) and binary (IEC: 1024-base) conversion ratios. Accurate for cloud storage estimation, file sizing, bandwidth calculations, memory allocations, and download time predictions.

Decimal (KB/MB/GB) for cloud storage plans, internet providers, storage manufacturers. Binary (KiB/MiB/GiB) for OS display, RAM, databases, technical specs. When unclear: storage companies typically mean decimal; computers display binary. Check unit base (1000 vs 1024).

4K video (2160p): 25-100 GB per hour depending on codec & compression. Standard: H.265 codec ≈ 25-35 GB/hr. H.264 ≈ 50-100 GB/hr. Streaming (Netflix 4K) ≈ 15 GB/hr (lower bitrate). Convert using this tool to estimate storage needed for video libraries.

YouTube: max 256 GB per file. Recommended: compress to 5-8 GB for 1-hour video (H.265 codec). TikTok: max 500 MB. Instagram: max 4 GB. Smaller file = faster upload, less bandwidth. Use converter to estimate upload time: File Size (MB) ÷ Upload Speed (MB/s) = Time.