Free Online Data Storage Converter
Use our free online data storage converter tool to convert between storage units like bits, bytes, kilobytes, and more, while also calculating transfer times, estimating capacity, and comparing sizes, all with support for both decimal (SI) and binary (IEC) standards—ideal for IT professionals, photographers, and anyone managing digital storage.
Conversion Result
Enter valid values to see conversion result
| Gigabytes (GB) | Terabytes (TB) - Decimal | Tebibytes (TiB) - Binary |
|---|
Key Insights
- 1000 GB = 1 TB (decimal) = 0.909 TiB (binary)
- The difference between TB and TiB grows with larger values
- This explains why a 1TB drive shows as ~931GB in Windows
When converting data storage units, it's crucial to understand the difference between decimal (SI) and binary (IEC) systems. This distinction explains why your 1TB hard drive shows as 931GB in Windows.
Decimal System (SI Units)
- 1 KB (Kilobyte) = 1,000 bytes
- 1 MB (Megabyte) = 1,000,000 bytes
- 1 GB (Gigabyte) = 1,000,000,000 bytes
- Used by: Storage manufacturers, network speeds, most consumer applications
Binary System (IEC Units)
- 1 KiB (Kibibyte) = 1,024 bytes
- 1 MiB (Mebibyte) = 1,048,576 bytes
- 1 GiB (Gibibyte) = 1,073,741,824 bytes
- Used by: Operating systems, memory (RAM), technical computing
Why This Matters:
A 1TB hard drive (1,000,000,000,000 bytes) equals approximately 931GiB when calculated in binary system, which is why your operating system shows less capacity than advertised.
Binary & Decimal Conversion
Accurate conversions between binary (base-2) and decimal (base-10) storage units
Transfer Time Calculations
Calculate how long it will take to transfer files at different connection speeds
Storage Capacity Estimation
See how many photos, videos, or files will fit in your storage device
Visual Charts & Tables
Understand storage relationships with clear GB to TB conversion charts
- Alex T., Cloud Architect“This data storage converter is incredibly accurate for cloud storage planning. The GB to TB visualization helps clients understand their needs better.”
Number Base Converter
Convert numbers between binary, decimal, hexadecimal, and octal systems
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Convert between seconds, minutes, hours, days, and other time units
Try Time Converter →Swim Time Converter
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Try Swim Time Converter →Always check if your OS uses binary or decimal when planning storage
Consider transfer speeds when moving large amounts of data
Account for 10-15% overhead for file system formatting
Use the comparison tool to understand relative storage sizes