A 256 GB phone in GiB
256 × 109 ÷ 230 = 238.42 GiB
Data Storage Converter
Convert bits, bytes, KB, MB, GB and TB, and their binary counterparts KiB, MiB, GiB and TiB.
Result
1 gigabyte (GB) equals
1,000MB
1 GB = 1,000 MB
1 GB in every data storage unit
| Unit | Value |
|---|---|
| Bit (bit) | 8,000,000,000 |
| Byte (B) | 1,000,000,000 |
| Kilobyte (kB) | 1,000,000 |
| Megabyte (MB) | 1,000 |
| Gigabyte (GB) | 1 |
| Terabyte (TB) | 0.001 |
| Kibibyte (KiB) | 976,562.5 |
| Mebibyte (MiB) | 953.6743164063 |
| Gibibyte (GiB) | 0.9313225746 |
| Tebibyte (TiB) | 0.0009094947 |
Runs in your browser — nothing you enter is sent to a server.
How the Data Storage Converter works
Enter a size and choose the units. The converter supports decimal units (kB, MB, GB, TB — powers of 1,000) and binary units (KiB, MiB, GiB, TiB — powers of 1,024), plus bits and bytes.
Storage makers label drives in decimal units, while many operating systems report sizes in binary units (sometimes still labelled “GB”). That's why a new drive seems to hold less than advertised — no space is actually missing.
Common conversions
Advertised gigabytes to gibibytes
| Gigabyte (GB) | Gibibyte (GiB) |
|---|---|
| 16 GB | 14.9 GiB |
| 32 GB | 29.8 GiB |
| 64 GB | 59.6 GiB |
| 128 GB | 119.21 GiB |
| 256 GB | 238.42 GiB |
| 500 GB | 465.66 GiB |
| 512 GB | 476.84 GiB |
| 1,000 GB | 931.32 GiB |
Advertised terabytes to gibibytes
| Terabyte (TB) | Gibibyte (GiB) |
|---|---|
| 1 TB | 931.32 GiB |
| 2 TB | 1,862.65 GiB |
| 4 TB | 3,725.29 GiB |
| 8 TB | 7,450.58 GiB |
| 16 TB | 14,901.16 GiB |
Gigabytes to megabytes
| Gigabyte (GB) | Megabyte (MB) |
|---|---|
| 0.5 GB | 500 MB |
| 1 GB | 1,000 MB |
| 2 GB | 2,000 MB |
| 4 GB | 4,000 MB |
| 8 GB | 8,000 MB |
| 16 GB | 16,000 MB |
Mebibytes to megabytes
| Mebibyte (MiB) | Megabyte (MB) |
|---|---|
| 1 MiB | 1.0486 MB |
| 10 MiB | 10.4858 MB |
| 100 MiB | 104.8576 MB |
| 512 MiB | 536.8709 MB |
| 1,024 MiB | 1,073.7418 MB |
Formula
1 GB = 109 B · 1 GiB = 230 B = 1,073,741,824 B
Each decimal step is × 1,000 (kB → MB → GB → TB); each binary step is × 1,024 (KiB → MiB → GiB → TiB). One byte is 8 bits.
Examples
A 1 TB drive in GiB
1012 ÷ 230 = 931.32 GiB
A 100 MB file in bits
100 × 106 × 8 = 800,000,000 bits
Frequently asked questions
How long does a download take at 100 Mbps?
Internet speeds are in megabits per second, and 8 bits make a byte, so 100 Mbps moves at most 12.5 MB per second — a 1 GB file takes at least 80 seconds.
Is 1 GB 1,000 MB or 1,024 MB?
Officially 1 GB = 1,000 MB. The 1,024 figure belongs to the binary units: 1 GiB = 1,024 MiB. Some software still uses “GB” for GiB, which causes the confusion.
What's the difference between kB, KB and KiB?
kB (lowercase k) is the SI kilobyte of 1,000 bytes. KiB is the kibibyte of 1,024 bytes. “KB” is used informally for either.
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