Question 1

What's the difference between GB and GiB?

Accepted Answer

GB (gigabyte) uses decimal: 1 GB = 1,000 MB = 1,000,000,000 bytes. GiB (gibibyte) uses binary: 1 GiB = 1,024 MiB = 1,073,741,824 bytes. Operating systems often show GiB but label it GB.

Question 2

How many megabytes are in a gigabyte?

Accepted Answer

In decimal (SI), 1 GB = 1,000 MB. In binary (IEC), 1 GiB = 1,024 MiB. Storage manufacturers use decimal (1,000), while operating systems often use binary (1,024), causing apparent size discrepancies.

Question 3

Why does my 1TB drive show less than 1TB?

Accepted Answer

Manufacturers use decimal (1 TB = 1,000 GB), but computers use binary (1 TiB = 1,024 GiB). A 1 TB drive = 931 GiB in your OS. Also, formatting and system files consume additional space.

Question 4

Can I convert between bits and bytes?

Accepted Answer

Yes! 8 bits = 1 byte. Internet speeds use bits (Mbps = megabits per second), while file sizes use bytes (MB = megabytes). A 100 Mbps connection downloads at 12.5 MB per second.

Question 5

How much storage do I need for photos and videos?

Accepted Answer

Photos: 2-5 MB for phone cameras, 10-30 MB for DSLRs. Videos: 1 GB per 10 minutes (HD), 2-4 GB per 10 minutes (4K). A 128 GB phone holds roughly 25,000 photos or 50 hours of HD video.

Question 6

What's the difference between KB and kB?

Accepted Answer

KB (uppercase K) = kilobyte = 1,000 bytes (decimal). kB is less common. KiB = kibibyte = 1,024 bytes (binary). Similarly: MB vs MiB, GB vs GiB, TB vs TiB.

Question 7

How do cloud storage providers calculate storage?

Accepted Answer

Most cloud providers (Google Drive, Dropbox, iCloud) use decimal (GB = 1,000 MB). They count actual file sizes, not disk space consumed, so you get slightly more usable space than binary calculations.

Question 8

What's a petabyte and who uses it?

Accepted Answer

A petabyte (PB) = 1,000 terabytes = 1,000,000 gigabytes. Large companies, data centers, and cloud services use petabytes. For example, Facebook stores hundreds of petabytes of user data.

Mégaoctet (MB)	Gigaoctet (GB)
1	0.001
2	0.002
3	0.003
4	0.004
5	0.005
10	0.01
15	0.015
20	0.02
25	0.025
50	0.05
75	0.075
100	0.1
250	0.25
500	0.5
1,000	1

Convertisseur Mégaoctet en Gigaoctet

Formule de Conversion

À propos de Mégaoctet

À propos de Gigaoctet

Comment Convertir Mégaoctet en Gigaoctet

Conversions Courantes de Mégaoctet en Gigaoctet

Table de Référence de Conversion

Conversions de Stockage de Données dans la Vie Réelle

Photos and Images

Videos and Movies

Music and Audio

Documents and Files

Hard Drives and SSDs

Internet and Downloads

FAQ sur la Conversion de Stockage de Données