Data Unit Converter
Convert data storage units between Decimal (SI: KB, MB, GB), Binary (IEC: KiB, MiB, GiB), and Bits, plus calculate download and transfer durations.
Drive label: 1 GB (1,000,000,000 Bytes)
Windows capacity: 0.93 GiB (What Windows reports)
0.07 GiB difference due to 1000 vs 1024 base calculation
Complete Unit Conversion Matrix
Exact equivalent of 1 GB across all computing standards.
| Standard | Unit Name | Symbol | Value | Action |
|---|---|---|---|---|
| Bits | Bit | b | 8,000,000,000 | |
| Bits | Kilobit | Kb | 8,000,000 | |
| Bits | Megabit | Mb | 8,000 | |
| Bits | Gigabit | Gb | 8 | |
| Bits | Terabit | Tb | 0.008 | |
| Decimal (SI) | Byte | B | 1,000,000,000 | |
| Decimal (SI) | Kilobyte (Decimal) | KB | 1,000,000 | |
| Decimal (SI) | Megabyte (Decimal) | MB | 1,000 | |
| Decimal (SI) | Gigabyte (Decimal) | GB | 1 | |
| Decimal (SI) | Terabyte (Decimal) | TB | 0.001 | |
| Decimal (SI) | Petabyte (Decimal) | PB | 0 | |
| Binary (IEC) | Kibibyte (Binary) | KiB | 976,562.5 | |
| Binary (IEC) | Mebibyte (Binary) | MiB | 953.6743 | |
| Binary (IEC) | Gibibyte (Binary) | GiB | 0.9313 | |
| Binary (IEC) | Tebibyte (Binary) | TiB | 0.0009 | |
| Binary (IEC) | Pebibyte (Binary) | PiB | 8.8818e-7 |
How it works?
Enter Data Amount
Input any positive number and choose your starting unit (e.g. Gigabytes, Megabytes, Terabytes, or Kibibytes).
Select Target Unit
Pick any target unit from Decimal SI (1000-based), Binary IEC (1024-based), or network bits (Mbps/Gbps).
Inspect Storage & Speed
View the exact converted output, discover why Windows storage differs from disk labels, and review estimated download times.
1-Click Copy Across Matrix
Copy any converted value directly to your clipboard from the interactive unit matrix table.
Tips & Best Practices
- •Why does my 1 TB drive only show 931 GB in Windows?: Hard drive manufacturers measure storage using decimal SI units (1 TB = 1,000,000,000,000 Bytes). Windows measures storage using binary IEC units (1,024^4 Bytes), which equals approximately 931.32 GiB. No storage is actually missing!
- •Megabits (Mb) vs Megabytes (MB): Internet service providers quote speeds in Megabits per second (Mbps with a lowercase 'b'), while file sizes are measured in Megabytes (MB with an uppercase 'B'). 1 Byte = 8 bits, so an 80 Mbps connection downloads roughly 10 MB per second.
- •macOS vs Windows File Sizing: Starting in Mac OS X Snow Leopard, Apple switched macOS file displays to decimal (1000-based, where 1 GB = 1000 MB), whereas Windows continues to use binary (1024-based, where 1 GiB = 1024 MiB).
- •100% Client-Side Privacy: All unit conversions, mathematical bit shifts, and download estimations execute entirely in your browser with zero server tracking.
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