Convert Gigabytes to Bytes
One gigabyte equals 1,073,741,824 bytes. Type any value to convert gigabytes to bytes instantly — with a full reference table below.
Convert Gigabytes to Bytes
Converted in your browser — nothing you enter is sent anywhere.
How to convert Gigabytes to Bytes
To convert gigabytes to bytes, multiply by 1,073,741,824. One gigabyte equals 1,073,741,824 B, and one byte equals 9.31323 × 10⁻¹⁰ GB.
- Take the value in gigabytes — for example 3 GB.
- Multiply by 1,073,741,824 (the number of bytes in one gigabyte).
- 3 × 1,073,741,824 = 3,221,225,472 B.
Gigabytes to Bytes conversion table
| Gigabytes | Bytes |
|---|---|
| 1 GB | 1,073,741,824 B |
| 2 GB | 2,147,483,648 B |
| 4 GB | 4,294,967,296 B |
| 5 GB | 5,368,709,120 B |
| 8 GB | 8,589,934,592 B |
| 10 GB | 10,737,418,240 B |
| 16 GB | 17,179,869,184 B |
| 20 GB | 21,474,836,480 B |
| 32 GB | 34,359,738,368 B |
| 50 GB | 53,687,091,200 B |
| 64 GB | 68,719,476,736 B |
| 100 GB | 107,374,182,400 B |
| 128 GB | 137,438,953,472 B |
| 256 GB | 274,877,906,944 B |
| 512 GB | 549,755,813,888 B |
| 1,024 GB | 1,099,511,627,776 B |
| Bytes | Gigabytes |
|---|---|
| 1 B | 9.31323 × 10⁻¹⁰ GB |
| 2 B | 1.86265 × 10⁻⁹ GB |
| 4 B | 3.72529 × 10⁻⁹ GB |
| 5 B | 4.65661 × 10⁻⁹ GB |
| 8 B | 7.45058 × 10⁻⁹ GB |
| 10 B | 9.31323 × 10⁻⁹ GB |
| 16 B | 1.49012 × 10⁻⁸ GB |
| 20 B | 1.86265 × 10⁻⁸ GB |
| 32 B | 2.98023 × 10⁻⁸ GB |
| 50 B | 4.65661 × 10⁻⁸ GB |
| 64 B | 5.96046 × 10⁻⁸ GB |
| 100 B | 9.31323 × 10⁻⁸ GB |
| 128 B | 1.19209 × 10⁻⁷ GB |
| 256 B | 2.38419 × 10⁻⁷ GB |
| 512 B | 4.76837 × 10⁻⁷ GB |
| 1,024 B | 9.53674 × 10⁻⁷ GB |
About converting Gigabytes to Bytes
Gigabytes (GB) and Bytes (B) are both units of data storage. The exact factor is 1 GB = 1,073,741,824 B, so multiply by 1,073,741,824 to go from gigabytes to bytes (or divide to go back).
The conversion runs entirely in your browser. Need the reverse? Use the Bytes to Gigabytes converter, or the full unit converter for every unit at once.
Binary vs decimal: why your drive looks smaller
Windows and RAM reports count in powers of 1,024 (binary, sometimes written KiB/MiB/GiB); drive makers, macOS and mobile carriers count in powers of 1,000 (decimal). Same bytes, two answers:
| Gigabytes | Bytes (binary · Windows) | Bytes (decimal · on the box) |
|---|---|---|
| 1 GB | 1,073,741,824 B | 1,000,000,000 B |
| 2 GB | 2,147,483,648 B | 2,000,000,000 B |
| 4 GB | 4,294,967,296 B | 4,000,000,000 B |
| 5 GB | 5,368,709,120 B | 5,000,000,000 B |
| 8 GB | 8,589,934,592 B | 8,000,000,000 B |
| 10 GB | 10,737,418,240 B | 10,000,000,000 B |
| 16 GB | 17,179,869,184 B | 16,000,000,000 B |
| 20 GB | 21,474,836,480 B | 20,000,000,000 B |
| 32 GB | 34,359,738,368 B | 32,000,000,000 B |
| 50 GB | 53,687,091,200 B | 50,000,000,000 B |
Example: a “1 TB” drive holds 10¹² bytes, which Windows shows as about 931 GB.
Real-world data storage in gigabytes and bytes
| Example | Gigabytes | Bytes |
|---|---|---|
| A page of plain text | ≈ 0.0000018626 GB | ≈ 2,000 B |
| A 4-minute MP3 at 128 kbps | 0.00357628 GB | 3,840,000 B |
| A CD | 0.683594 GB | 734,003,200 B |
| A single-layer DVD (4.7 GB) | 4.377216 GB | 4,700,000,000 B |
| A 50 GB dual-layer Blu-ray | 46.56613 GB | 50,000,000,000 B |
“≈” marks typical values; the rest are defined or measured figures.
The units
Here, 1,024 MB = 1,073,741,824 bytes (GiB). Decimal gigabyte = 1,000,000,000 bytes.
Used for: Phone storage, mobile data, RAM.
8 bits — enough to store one Latin character.
Used for: File sizes.
This page uses binary units (1 KB = 1,024 bytes), which is how Windows and most RAM reports count. Storage makers and macOS use decimal units (1 kB = 1,000 bytes), so both are shown below.