GB ↔ MB Converter
Convert between gigabytes and megabytes instantly
Enter gigabytes value to convert to megabytes
Enter megabytes value to convert to gigabytes
Conversion Result
1 GB = 1,024 MB
1 GB • 1,024 MB • 0.001 TB
📚 GB ↔ MB Conversion Details
GB to MB Formula
megabytes = gigabytes × 1024
To convert gigabytes to megabytes, multiply the GB by 1024.
MB to GB Formula
gigabytes = megabytes ÷ 1024
To convert megabytes to gigabytes, divide the MB by 1024.
Bidirectional Conversion
This converter works both ways simultaneously:
- Type in GB → MB updates automatically
- Type in MB → GB updates automatically
- No buttons to click - works as you type
Common Uses
- File size conversion
- Storage device capacity
- Data transfer calculations
- Mobile data plans
💾 How This Converter Works
This is a bidirectional converter that works in real-time:
- GB → MB: When you type in the GB field, the MB field automatically updates
- MB → GB: When you type in the MB field, the GB field automatically updates
- No swapping needed: Both conversions happen simultaneously
- Real-time: Updates happen as you type, no button clicks required
// Bidirectional Conversion Logic:
megabytes = gigabytes × 1024
gigabytes = megabytes ÷ 1024
// Example 1: Type "2" in GB
megabytes = 2 × 1024 = 2048 MB
// Example 2: Type "5120" in MB
gigabytes = 5120 ÷ 1024 = 5 GB
megabytes = gigabytes × 1024
gigabytes = megabytes ÷ 1024
// Example 1: Type "2" in GB
megabytes = 2 × 1024 = 2048 MB
// Example 2: Type "5120" in MB
gigabytes = 5120 ÷ 1024 = 5 GB
📊 Conversion Table
| Gigabytes (GB) | Megabytes (MB) | Common Usage |
|---|---|---|
| 0.5 GB | 512 MB | Mobile app size |
| 1 GB | 1,024 MB | Basic mobile data |
| 2 GB | 2,048 MB | Average movie file |
| 4 GB | 4,096 MB | DVD quality movie |
| 8 GB | 8,192 MB | USB flash drive |
| 16 GB | 16,384 MB | Smartphone storage |
❓ Frequently Asked Questions
Q: How many megabytes are in a gigabyte?
A: There are exactly 1,024 megabytes in one gigabyte.
Q: How does the bidirectional conversion work?
A: Both input fields work simultaneously. When you change the GB value, MB updates automatically. When you change the MB value, GB updates automatically. No swap button needed.
Q: Is it 1000 or 1024 MB in a GB?
A: For digital storage, 1 GB = 1024 MB. Some manufacturers use 1000 MB for marketing, but technically it's 1024 MB.
Q: How accurate is this converter?
A: This converter provides exact calculations up to 4 decimal places.