PB to MB — convert petabytes to megabytes
Exact 1 × 1,000,000,000 = 1,000,000,000
1 petabyte in other units
| Bits | 8,000,000,000,000,000 | bit |
|---|---|---|
| Bytes | 1,000,000,000,000,000 | B |
| Kilobytes | 1,000,000,000,000 | kB |
| Megabytes | 1,000,000,000 | MB |
| Gigabytes | 1,000,000 | GB |
| Terabytes | 1,000 | TB |
| Kibibytes | 976,562,500,000 | KiB |
| Mebibytes | 953,674,316.41 | MiB |
| Gibibytes | 931,322.57 | GiB |
| Tebibytes | 909.494702 | TiB |
PB to MB at a glance
| Petabytes | Megabytes |
|---|---|
| 1 PB | 1,000,000,000 MB |
| 2 PB | 2,000,000,000 MB |
| 3 PB | 3,000,000,000 MB |
| 5 PB | 5,000,000,000 MB |
| 10 PB | 10,000,000,000 MB |
| 20 PB | 20,000,000,000 MB |
| 25 PB | 25,000,000,000 MB |
| 50 PB | 50,000,000,000 MB |
| 100 PB | 100,000,000,000 MB |
| 250 PB | 250,000,000,000 MB |
| 500 PB | 500,000,000,000 MB |
| 1,000 PB | 1,000,000,000,000 MB |
How to convert petabytes to megabytes
Multiply by 1,000,000,000 — one petabyte is 1,000,000,000 megabytes. That factor is exact: it comes from the definition of the units rather than from a measurement, so it will not change and does not need rounding.
Working 1 × 1,000,000,000 = 1,000,000,000
In words: one billion megabytes.
What these units are
The petabyte and the megabyte are covered in the digital storage unit guide, along with every other unit on this page.
Questions
How many megabytes are in a petabyte?
One petabyte is 1,000,000,000 megabytes. This figure is exact — it comes from the definition of the unit, not a measurement.
What is 1 petabyte in megabytes?
1 petabyte is 1,000,000,000 megabytes. The working is 1 × 1,000,000,000 = 1,000,000,000.
Why does my 1 TB drive show as 931 GB?
Nothing is missing. The manufacturer counts a terabyte as 1,000,000,000,000 bytes, while Windows divides by 1,024 at each step and labels the result GB when it really means GiB. Same bytes, two counting systems.
What is the difference between MB and MiB?
A megabyte is exactly one million bytes. A mebibyte is 1,048,576 bytes — two to the twentieth. The gap is about 4.9% at this scale and widens to roughly 10% by the terabyte.
Is my internet speed in megabytes or megabits?
Megabits. Connection speeds are quoted in Mbps, and there are eight bits to a byte, so a 100 Mbps line downloads at roughly 12.5 MB per second at best. The lowercase b is doing a lot of work in that abbreviation.