Digital Metrology Cockpit • SI vs IEC Standards
データ容量換算ツール - 10進法（MB, GB, TB）と2進法（MiB, GiB, TiB）の相互変換
HDD/SSDの公称10進法容量（SI単位系）とOS認識の2進法実容量（IEC単位系: GiB, TiB）の差分を即時換算。データ転送所要時間シミュレーター搭載。
Technical Metrology Standard: Storage capacity calculations comply with NIST SP 800-88, IEEE 1541-2008, and IEC 60027-2 standards. Apparent capacity variance between retail drive packaging and operating system file managers results from Base-10 (decimal 1,000) versus Base-2 (binary 1,024) addressing conventions and partition metadata overhead, not media corruption.
パラメータと入力設定
Base SITB
10¹² Bytes
Common Hardware Capacities:
Decimals:2
0246
Standard Filter:
Exact Byte Count:1,000,000,000,000 BScientific: 1.0000e+12 B
Operating System File System
WindowsSelect your target OS file system to simulate the real formatted partition space available to the user.
Windows Explorer Usable:916.75 GiB
macOS Finder Display:994.80 GB
Unformatted Binary Gap:-6.87% (68.68 GB)
SI Decimal1000.00 GB1000³ Base-10
IEC Binary931.32 GiB1024³ Base-2
Terabytes1.000 TB0.909 TiB
Windows Gap-6.87%68.7 GB less
Side-by-Side Reality: Commercial Advertised vs Windows OS Formatted1000^n vs 1024^n
Advertised Commercial Capacity (SI Decimal):1000.00 GB (100.0%)
Reported by Windows OS (IEC Binary GiB):931.32 GiB (93.1%)
Advertised Decimal (1000³)Windows Formatted (1024³)Base-2 Delta (Missing Space)
Gap: -68.68 GBShowing 12 of 12 units
| Unit Name | Symbol | Standard | Exact Multiplier | Value in Unit | Action |
|---|---|---|---|---|---|
Bit Fundamental unit of binary data (1/8 of a Byte) | b | BASE | 1/8 Byte | 8,000,000,000,000 8.0000e+12 | |
Byte Standard 8-bit character unit (encodes 1 ASCII character) | B | BASE | 1 Byte | 1,000,000,000,000 1.0000e+12 | |
Kilobyte (SI) Decimal 1,000 Bytes (10³). Commercial storage & networking standard | KB | SI | 10³ Bytes | 1,000,000,000 1.0000e+9 | |
Kibibyte (IEC) Binary 1,024 Bytes (2¹⁰). IEC 60027-2 computing memory standard | KiB | IEC | 2¹⁰ Bytes | 976,562,500 9.7656e+8 | |
Megabyte (SI) Decimal 1,000,000 Bytes (10⁶). Digital audio, photos, and file sizes | MB | SI | 10⁶ Bytes | 1,000,000 1.0000e+6 | |
Mebibyte (IEC) Binary 1,048,576 Bytes (2²⁰). Linux RAM, kernel heap allocations | MiB | IEC | 2²⁰ Bytes | 953,674.32 9.5367e+5 | |
Gigabyte (SI) Decimal 1,000,000,000 Bytes (10⁹). Retail drives, USB sticks, AWS S3 | GB | SI | 10⁹ Bytes | 1,000 1.0000e+3 | |
Gibibyte (IEC) Binary 1,073,741,824 Bytes (2³⁰). Windows OS reported size, RAM modules | GiB | IEC | 2³⁰ Bytes | 931.32 9.3132e+2 | |
Terabyte (SI)SOURCE Decimal 10¹² Bytes. Commercial NVMe SSDs, mechanical HDDs | TB | SI | 10¹² Bytes | 1 1.0000e+0 | |
Tebibyte (IEC) Binary 2⁴⁰ Bytes. Enterprise SAN/NAS, ZFS storage pools, Linux LVM | TiB | IEC | 2⁴⁰ Bytes | 0.91 9.0949e-1 | |
Petabyte (SI) Decimal 10¹⁵ Bytes. Hyperscale cloud data centers, tape libraries | PB | SI | 10¹⁵ Bytes | 0 1.0000e-3 | |
Pebibyte (IEC) Binary 2⁵⁰ Bytes. Supercomputing clusters, scientific datasets | PiB | IEC | 2⁵⁰ Bytes | 0 8.8818e-4 |
Real-World Media EquivalentsCapacity: 1 TB
4K UHD Blu-ray Movies (~20 GB)
50.0movies
1080p FHD Movie Streams (~4 GB)
250.0movies
24MP RAW Digital Photos (~15 MB)
66,667photos
Lossless High-Res FLAC (~10 MB)
100,000tracks
AAA Blockbuster PC Games (~90 GB)
11.1games
Full English Wikipedia Dumps (~22 GB)
45.5copies
Smartphone 4K 60fps Video (~400 MB/min)
2,500mins
Standard Business PDFs (~2 MB)
500,000documents
厳密なバイト実値 (B)1,000,000,000,000 Bytes8,000,000,000,000 bits (Base-1 Binary Primitive)
SI十進数規格 (KB, MB, GB: 1000進)916.75 GiBNTFS (Windows 11 / 10) (~91.7% user accessible)
IEC二進数規格 (KiB, MiB, GiB: 1024進)-6.87% Gap-68.68 GB unaddressed in Windows
ゼロナレッジ・完全ローカル実行
すべてのデータ処理、解析、計算はお使いのブラウザ内部メモリで完結します。外部サーバーへの送信はゼロです。
超高速・即時リアクティブ演算
最適化されたクライアント側解析パイプラインにより、キーストロークと同時に遅延なくリアルタイムで結果を生成します。
公式仕様準拠・高信頼アーキテクチャ
公式業界仕様に厳格に準拠し、エッジケースの安全な処理とメモリリークのない堅牢な実行を保証します。
