Data Converter

The Data Size Converter converts between digital data storage units: Bytes (B), Kilobytes (KB), Megabytes (MB), Gigabytes (GB), and Terabytes (TB). It uses binary conversion (1024-based), which is the standard used by operating systems and memory manufacturers. In the binary system, each unit is 1,024 times the previous one: 1 KB = 1,024 bytes, 1 MB = 1,024 KB, and so on. This is based on powers of 2 (2^10 = 1,024), which aligns with how computers actually process and store data. There is an important distinction between binary (1024-based) and decimal (1000-based) measurements. Hard drive manufacturers and network speeds often use decimal units (1 GB = 1,000,000,000 bytes), while operating systems use binary units (1 GB = 1,073,741,824 bytes). This is why a '500 GB' hard drive shows only about 465 GB in your operating system. This converter is essential for understanding storage capacity, file sizes, download times, cloud storage limits, and data plans. Whether you're comparing cloud storage plans, estimating backup sizes, or calculating download times, accurate unit conversion helps you make informed decisions about your digital storage needs.

1. Enter a value in any unit field. Type a number in the B, KB, MB, GB, or TB field. 2. All other fields update automatically. Entering a value in one field instantly converts to all other units. Common Examples: • Text email: ~10 KB = 10,240 bytes • High-res photo: ~5 MB = 5,120 KB • MP3 song (4 min): ~4 MB = 4,096 KB • HD movie (2 hrs): ~4 GB = 4,096 MB • 4K movie: ~20 GB = 20,480 MB • iPhone storage: 128 GB = 131,072 MB • External HDD: 1 TB = 1,024 GB Note: This converter uses binary (1024-based) calculations, matching how your computer's operating system reports storage. If you need decimal (1000-based) conversions (as used by hard drive manufacturers), multiply the binary result by approximately 1.074 for GB or 1.1 for TB.

■ Binary Conversion (1024-based, used in this converter) 1 KB = 1,024 B (2^10) 1 MB = 1,024 KB = 1,048,576 B (2^20) 1 GB = 1,024 MB = 1,073,741,824 B (2^30) 1 TB = 1,024 GB = 1,099,511,627,776 B (2^40) ■ Conversion Formulas KB = B ÷ 1,024 MB = KB ÷ 1,024 = B ÷ 1,048,576 GB = MB ÷ 1,024 = B ÷ 1,073,741,824 TB = GB ÷ 1,024 = B ÷ 1,099,511,627,776 ■ Examples 5,368,709,120 bytes: ÷ 1,024 = 5,242,880 KB ÷ 1,024 = 5,120 MB ÷ 1,024 = 5 GB 1.5 TB: × 1,024 = 1,536 GB × 1,024 = 1,572,864 MB × 1,024 = 1,610,612,736 KB ■ Decimal vs Binary Comparison Decimal (SI) Binary (IEC) 1 KB = 1,000 B 1,024 B 1 MB = 1,000,000 B 1,048,576 B 1 GB = 1,000,000,000 B 1,073,741,824 B 1 TB = 10^12 B 1,099,511,627,776 B ■ IEC Prefixes (official binary names) KiB (kibibyte) = 1,024 B MiB (mebibyte) = 1,024 KiB GiB (gibibyte) = 1,024 MiB TiB (tebibyte) = 1,024 GiB

■ Why Your Hard Drive Shows Less Space A '1 TB' hard drive has 1,000,000,000,000 bytes (decimal), but your OS shows it as 931 GB (binary: ÷1,073,741,824). The 'missing' 69 GB isn't lost — it's the difference between decimal and binary counting. Common examples: • 256 GB SSD → shows ~238 GB • 512 GB SSD → shows ~477 GB • 1 TB HDD → shows ~931 GB • 2 TB HDD → shows ~1.82 TB ■ File Size Estimates • 1 page of text: ~2 KB • Email (no attachments): ~10-50 KB • Smartphone photo: 3-8 MB • DSLR RAW photo: 25-50 MB • 1 hour MP3 music: ~60 MB • 1 hour HD video (1080p): ~1.5-4 GB • 1 hour 4K video: ~7-15 GB • PC game: 30-150 GB • Full OS installation: 20-60 GB ■ Internet Speed vs File Size Internet speeds are measured in bits (Mbps), not bytes. 1 byte = 8 bits. • 100 Mbps internet = 12.5 MB/s actual download speed • 1 Gbps internet = 125 MB/s • Time to download 1 GB at 100 Mbps: ~82 seconds ■ Cloud Storage Comparison • Google Drive: 15 GB free • iCloud: 5 GB free • OneDrive: 5 GB free • Dropbox: 2 GB free ■ Data Plan Usage • 1 GB mobile data ≈ 3-4 hours web browsing, or 1 hour SD video streaming, or ~8 hours music streaming