Why multiply by 1,099,511,627,776?

1 TB = 1024 GB × 1024 MB × 1024 KB × 1024 bytes = 1,099,511,627,776 bytes using binary prefixes.

Why does my 4 TB drive show 3.64 TB?

Manufacturer uses decimal (4 TB = 4,000,000,000,000 bytes). OS uses binary (4 TB = 4,398,046,511,104 bytes).

Convert 2 TB to bytes

2 TB = 2,199,023,255,552 bytes.

What's the difference between TB and TiB?

TiB (tebibyte) = 1,099,511,627,776 bytes explicitly binary. TB often means decimal (10¹²) in marketing.

Terabytes (TB) to Bytes Converter

Enter a value to instantly convert between data storage units.

From

Precision4 dp

1 Terabyte = 1.0995e+12 Byte

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

bytes = TB × 1099511627776

A terabyte is 1024 GB or 1,099,511,627,776 bytes. Consumer hard drives are marketed in decimal TB (1 trillion bytes), while operating systems report binary TB (1.099 trillion). This ~9.5% difference explains why a 4 TB drive shows ~3.64 TB in Windows. Enterprise storage arrays, backup systems, and data lakes commonly hold tens or hundreds of TB.

Source: JEDEC Standard 100B.01

Frequently Asked Questions

Real-World Examples

A storage architect confirming 1 TB = 1,099,511,627,776 bytes for array capacity planning.

1 TB = 1099511627776 B

A user checking why their 4 TB drive shows 3.64 TB in Windows — marketing vs OS units.

4 TB = 4398046511104 B

An enterprise IT manager calculating 10 TB backup repository in bytes for deduplication ratio.

10 TB = 10995116277760 B

A data protection specialist estimating 100 TB DR site in bytes for bandwidth calculation.

100 TB = 109951162777600 B

mb to gb gb to mb gb to tb tb to gb kb to mb mb to kb

Terabytes (TB) to Bytes Converter

Key Formulas

Formula

Frequently Asked Questions

Real-World Examples

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