Best for cloud and device planning
Use this when estimating app sizes, backups, camera cards, cloud quotas, or transfer limits.
💾 Storage converter
GB to MB Converter
Convert gigabytes to megabytes with decimal GB and binary GiB modes, formulas, examples, and a quick file-size table.
Direct answer: 1 GB = 1,000 MB in decimal storage. 1 GiB = 1,024 MiB in binary computing units.
GB to MB Converter calculator
Formula: decimal MB = GB × 1,000; binary MiB = GiB × 1,024.
Decimal vs binary: Storage products usually use decimal GB/MB. Operating systems and technical memory contexts may use binary GiB/MiB. Choose the mode that matches your source.
Quick reference table
| Input | Decimal | Binary |
|---|---|---|
| 0.5 GB | 500 MB | 512 MiB |
| 1 GB | 1,000 MB | 1,024 MiB |
| 2 GB | 2,000 MB | 2,048 MiB |
| 5 GB | 5,000 MB | 5,120 MiB |
| 10 GB | 10,000 MB | 10,240 MiB |
| 100 GB | 100,000 MB | 102,400 MiB |
Decimal vs binary matters at scale
The difference is small for tiny files but noticeable across hundreds of gigabytes.
Related data and unit converters
FAQ
How many MB is 2 GB?
2 GB equals 2,000 MB using decimal storage. 2 GiB equals 2,048 MiB using binary units.
Should I use GB or GiB?
Use GB for storage plans and device specifications; use GiB/MiB when a system or technical document explicitly uses binary units.
Can I use this for download sizes?
Yes for rough file sizes. For download time, also account for internet speed and remember Mbps is megabits per second, not megabytes per second.
Source snapshot: Traffic radar 2026-05-12-0029: P0 unit-conversion expansion after pre-gate passed at 1,026 quality URLs. Built as original data-size/speed calculators; no external repository content copied. Formulas reviewed 2026-05-12; decimal and binary assumptions are labeled on-page.