GB to MB Converter
Convert gigabytes (GB) to megabytes (MB). Choose decimal or binary interpretation to match how storage is labeled or displayed.
Enter GB, then choose decimal vs binary to match your context.
| Unit | Value |
|---|
Privacy: runs locally in your browser. No inputs are stored or transmitted.
How it works
Decimal: MB = GB × 1000
Binary: MiB = GiB × 1024
If your GB value is a decimal-labeled size but you want an OS-style binary display,
convert GB → bytes (×1,000,000,000) then bytes → MiB (÷1,048,576).
Examples
- 1.5 GB → 1500 MB (decimal)
- 1.5 GB → 1536 MiB (binary GiB→MiB)
- 0.25 GB → 250 MB (decimal)
When to use this tool
This tool is designed for quick, practical tasks such as everyday calculations, data formatting, or simple conversions. It is best used when you need fast results without installing software or using complex tools.
When to use
- Quick checks or one-time calculations
- Validating or converting data before using it elsewhere
- Simple tasks that do not require advanced software
When not to use
- Critical financial, legal, or medical decisions
- Large-scale or automated processing
- Situations requiring guaranteed precision beyond basic validation
Always review results before using them in important contexts.
About this tool
This tool helps you perform quick utility operations directly in your browser. It runs entirely in your browser without sending data to a server.
You can use this tool when handling simple tasks without installing additional software. The results should be interpreted as a processed output based on your input data.
FAQ
- Is 1 GB equal to 1000 MB or 1024 MB?
Both are used. Decimal units use 1 GB = 1000 MB. Binary units use 1 GiB = 1024 MiB. This tool can show both, depending on your selection.
- Which option matches what my computer shows?
Many operating systems display storage using binary units (GiB/MiB) even when labeling them as GB/MB. If you are matching an OS display, try the binary-equivalent option.
- Can I enter decimals (e.g., 1.25 GB)?
Yes. Decimals are supported.
- Are my inputs stored?
No. This converter runs locally in your browser.