The gigabyte
The gigabyte (GB) equals 1,000,000,000 bytes. The difference between GB (decimal) and GiB (binary, 1,073,741,824 B) is the reason a '1 TB' drive shows as ~931 GB in Windows.
Gigabytes to Kilobytes Converter
1 GB = 1000000 kB
1 gigabyte equals 1000000 kilobytes. To convert gigabytes to kilobytes, multiply the gigabyte value by 1000000. For quick reference: 1 GB = 1000000 kB, 5 GB = 5000000 kB, 10 GB = 10000000 kB, 100 GB = 100000000 kB.
Formula
Kilobytes = Gigabytes × 1000000Quick
How to convert gigabytes to kilobytes
Take your value
Start with your value in gigabytes.
Multiply by 1000000
Multiply the gigabyte value by 1000000. This is the exact conversion factor from gigabytes to kilobytes.
Read the result
The product is your value in kilobytes. For example, 5 GB × 1000000 = 5000000 kB.
Conversion formula
The exact factor from gigabytes to kilobytes is 1000000.
Kilobytes = Gigabytes × 1000000
Gigabytes to Kilobytes conversion table
Fifty common reference values, hand-picked for skim utility. Use the calculator above for any value not listed.
| Gigabytes (GB) | Kilobytes (kB) |
|---|---|
| 1 GB | 1000000 kB |
| 8 GB | 8000000 kB |
| 16 GB | 16000000 kB |
| 64 GB | 64000000 kB |
| 100 GB | 100000000 kB |
| 256 GB | 256000000 kB |
| 500 GB | 500000000 kB |
| 512 GB | 512000000 kB |
| 1000 GB | 1000000000 kB |
| 1024 GB | 1024000000 kB |
| 2000 GB | 2000000000 kB |
| 2048 GB | 2048000000 kB |
| 4096 GB | 4096000000 kB |
| 5000 GB | 5000000000 kB |
| 8192 GB | 8192000000 kB |
| 10000 GB | 10000000000 kB |
| 16384 GB | 16384000000 kB |
| 25000 GB | 25000000000 kB |
| 32768 GB | 32768000000 kB |
| 50000 GB | 50000000000 kB |
| 65536 GB | 65536000000 kB |
| 100000 GB | 100000000000 kB |
| 131072 GB | 131072000000 kB |
| 250000 GB | 250000000000 kB |
| 500000 GB | 500000000000 kB |
| 524288 GB | 524288000000 kB |
| 1000000 GB | 1000000000000 kB |
| 1048576 GB | 1048576000000 kB |
| 2000000 GB | 2000000000000 kB |
| 5000000 GB | 5000000000000 kB |
| 10000000 GB | 10000000000000 kB |
| 50000000 GB | 50000000000000 kB |
| 100000000 GB | 100000000000000 kB |
| 500000000 GB | 500000000000000 kB |
| 1000000000 GB | 1.0000 × 10^15 kB |
| 2000000000 GB | 2.0000 × 10^15 kB |
| 5000000000 GB | 5.0000 × 10^15 kB |
| 10000000000 GB | 1.0000 × 10^16 kB |
| 50000000000 GB | 5.0000 × 10^16 kB |
| 100000000000 GB | 1.0000 × 10^17 kB |
| 500000000000 GB | 5.0000 × 10^17 kB |
| 1000000000000 GB | 1.0000 × 10^18 kB |
| 2000000000000 GB | 2.0000 × 10^18 kB |
| 5000000000000 GB | 5.0000 × 10^18 kB |
| 10000000000000 GB | 1.0000 × 10^19 kB |
| 100000000000000 GB | 1.0000 × 10^20 kB |
| 1000000000000000 GB | 1.0000 × 10^21 kB |
| 10000000000000000 GB | 1.0000 × 10^22 kB |
| 100000000000000000 GB | 1.0000 × 10^23 kB |
| 1000000000000000000 GB | 1.0000 × 10^24 kB |
Real-world reference
A standard-definition movie is around 1–2 GB. Phones and laptops typically ship with 128 GB to 2 TB of storage. In kilobytes, that gives you: 1 GB = 1000000 kB, 10 GB = 10000000 kB, 100 GB = 100000000 kB.
Frequently asked questions
- How many kilobytes are in 1 gigabyte?
- 1 gigabyte equals 1000000 kilobytes.
- How do I convert gigabytes to kilobytes?
- Multiply the gigabyte value by 1000000. So x GB × 1000000 = the equivalent in kB.
- What is 5 gigabytes in kilobytes?
- 5 gigabytes equals 5000000 kilobytes.
- What is 10 gigabytes in kilobytes?
- 10 gigabytes equals 10000000 kilobytes.
- What is 100 gigabytes in kilobytes?
- 100 gigabytes equals 100000000 kilobytes.
- How do I convert back from kilobytes to gigabytes?
- Multiply the kilobyte value by 1.0000 × 10^−6. For example, 1 kB = 1.0000 × 10^−6 GB.
- Is the gigabyte bigger than the kilobyte?
- Yes. 1 gigabyte is larger than 1 kilobyte — specifically 1000000 times larger.
- Are these conversion factors exact?
- Yes. The factor of 1000000 is derived directly from the SI definitions of gigabyte and kilobyte.
About the gigabyte and the kilobyte
The kilobyte
The kilobyte (kB) equals exactly 1,000 bytes in the SI/IEC decimal convention. Most modern OS file managers and storage-vendor marketing use this definition. Older operating systems (Windows up to Vista) used 1 kB = 1,024 B — that value is now strictly called the kibibyte (KiB).