My cloud dashboard shows 8,192 GB used. How many TB is that, against a 10 TB quota?

8,192 ÷ 1,024 = 8 TB. You have 2 TB of headroom before hitting the 10 TB quota.

Why does my 1 TB drive only show about 931 GB free, even with nothing stored on it?

Manufacturers often market 1 TB as 1,000 GB (decimal), but your OS reports the binary value: 1 TB = 1,024 GB. The apparent 'missing' space is the gap between decimal marketing and binary reporting, not lost storage.

How do I estimate GB to TB mentally?

Divide by 1,000 for a rough figure, then subtract about 2.4% for precision. Example: 6,000 GB ÷ 1,000 = 6 (rough); the actual value is 5.86 TB.

A backup server reports 15,360 GB used across all volumes. How many TB is that for the capacity report?

15,360 ÷ 1,024 = 15 TB exactly.

Gigabytes (GB) to Terabytes (TB) Converter

Enter a value to instantly convert between data storage units.

From

Precision4 dp

1 Gigabyte = 0.001 Terabyte

Key Formulas

Megabyte → Gigabyte

GB = MB × 0.000976563

Gigabyte → Megabyte

MB = GB × 1024

Gigabyte → Terabyte

TB = GB × 0.000976563

Terabyte → Gigabyte

GB = TB × 1024

Formula

TB = GB ÷ 1024

Large drives, NAS systems, and cloud storage dashboards often report capacity in GB, but comparing that against a TB-denominated plan or spec sheet requires the binary conversion your OS actually uses: 1 TB = 1,024 GB, not 1,000.

Source: JEDEC Standard 100B.01 (traditional binary convention: 1 KB = 1024 B)

Reviewed by the Convert Calc editorial team · Last reviewed: 2026-08-11 · see our methodology

Frequently Asked Questions

Real-World Examples

A 1 TB external drive — exactly 1,024 GB in the binary convention your OS reports.

1024 GB = 1 TB

A 2 TB NAS array — 2,048 GB of total capacity.

2048 GB = 2 TB

A 512 GB laptop SSD — half a terabyte.

512 GB = 0.5 TB

A 10 TB enterprise storage pool — 10,240 GB, the figure a monitoring dashboard would show.

10240 GB = 10 TB

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