GB to KB Converter (Gigabytes to Kilobytes)
1 GB = 1,048,576 KB. Multiply gigabytes by 1,048,576 to get kilobytes. Inverse: GB = KB ÷ 1,048,576. Use the live tool above for precise batch conversions.
Formula
- KB = GB × 1,048,576
- GB = KB ÷ 1,048,576
- 1,048,576 = 1024 × 1024 (220) — two binary steps (GB→MB→KB).
Quick Reference
0.25 GB = 262,144 KB
0.5 GB = 524,288 KB
1 GB = 1,048,576 KB
2 GB = 2,097,152 KB
4 GB = 4,194,304 KB
8 GB = 8,388,608 KB
How to Convert (3‑Step)
- Take the GB value.
- Multiply by 1,048,576.
- Result = KB.
Example: 3 GB × 1,048,576 = 3,145,728 KB.
Use Cases
- Scripting legacy systems expecting KB inputs.
- Low-level memory profiling or log file rollovers.
- Comparing small configuration or metadata footprints.
- Capacity planning for embedded devices.
Accuracy & Tips
- Binary (base‑2) is standard for OS/file size reporting.
- Decimal (1 GB = 1,000,000 KB) is marketing only—avoid unless specified.
- Round to nearest thousand KB for quick estimates.
- Leave 3–5% headroom for filesystem overhead.
Worked Examples
- 1.5 GB = 1.5 × 1,048,576 = 1,572,864 KB
- 6 GB = 6 × 1,048,576 = 6,291,456 KB
- 524,288 KB ÷ 1,048,576 = 0.5 GB
FAQ
Why 1,048,576? It is 1024 × 1024 (two binary multipliers) moving from GB down past MB to KB.
Why is reported space smaller? Manufacturers may label using decimal, OS shows binary.
Mental shortcut: First convert GB → MB (×1024) then MB → KB (×1024) if you forget 1,048,576.
Need the reverse? Enter KB and switch the units above.