GB to Bytes Converter

Convert gigabytes to bytes instantly. Free GB to bytes converter with binary (1024) and decimal (1000) standards for storage and programming.

1 KB = 1,024 bytes — used by OS, RAM, file sizes

1 GB =

1,073,741,824B

Standard: Binary (1 KB = 1,024 B)

All Units

1 GB in every unit (binary)

Binary vs Decimal

Why your hard drive shows less space

1024
Binary (OS Reports)
1,073,741,824 bytes
1000
Decimal (Manufacturer)
1,000,000,000 bytes

Difference: 6.9% — this is why a "1 TB" drive shows ~931 GB in your OS

Transfer Time

Estimated time to transfer 1 GB

4G LTE (50 Mbps)2.7 min
5G (500 Mbps)16.0 sec
Wi-Fi 5 (400 Mbps)20.0 sec
Wi-Fi 6 (1 Gbps)8.0 sec
100 Mbps Broadband1.3 min
Gigabit Ethernet8.0 sec
USB 2.0 (480 Mbps)16.7 sec
USB 3.0 (5 Gbps)1.6 sec

How to Convert Gigabyte to Byte

Formula with a worked example (binary (1024))

To convert gigabyte (GB) to byte (B), use this formula:

Bytes = GB × 1,073,741,824 (binary) or GB × 1,000,000,000 (decimal)

Example: Convert 1 GB to B (binary (1024))

1 GB = 1,073,741,824 B

To convert back, use: GB = Bytes ÷ 1,073,741,824 (binary) or Bytes ÷ 1,000,000,000 (decimal)

Gigabyte to Byte Conversion Table

Quick reference (binary (1024))

GBB
0.001 GB1,073,741.82 B
0.01 GB10,737,418.24 B
0.1 GB107,374,182.4 B
0.5 GB536,870,912 B
1 GB1,073,741,824 B
2 GB2,147,483,648 B
5 GB5,368,709,120 B
10 GB10,737,418,240 B
50 GB53,687,091,200 B
100 GB107,374,182,400 B

Binary vs Decimal: Which Standard?

Why 1 GB can have two different values in B

There are two ways to define how many byte are in a gigabyte:

Binary (1024-based)

1 GB = 1,073,741,824 B

Used by: OS, RAM, file sizes

Decimal (1000-based)

1 GB = 1,000,000,000 B

Used by: HDD/SSD manufacturers, networks

When Do You Need GB to B?

Common scenarios where this conversion comes in handy

1

disk partition sizing

2

database capacity planning

3

memory requirements

4

big data calculations

Frequently Asked Questions

Common questions about converting gigabyte to byte

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Last updated Mar 24, 2026