Convert Petabytes to Megabytes (PB to MB)
1 petabyte (PB) = 1000000000 megabytes (MB). 1 MB = 1 × 10⁻⁹ PB. Example: 15 PB = 15 × 1000000000 = 15000000000 MB.
Also searched as petabytes to MB, petabytes in MB, petabytes into megabytes, PB to MB, PB in megabytes, PB into megabyte, petabyte to megabyte, PB to megabytes converter and how many megabytes in a petabyte.
1 PB = 1000000000 MB
Type in either box. Scientific notation works: 1.5e-3.
Converting a list? Use the bulk petabyte to megabyte converter to paste a column from Excel.
How to Convert Petabyte to Megabyte
- 1 PB = 1000000000 MB
- 1 MB = 1 × 10⁻⁹ PB
- Example: convert 15 PB to MB: 15 PB = 15 × 1000000000 MB = 15000000000 MB
Formula
MB = PB × 1000000000
Derivation from SI units:
- 1 PB = 10¹⁵ bytes = 1000 TB.
- 1 MB = 10⁶ bytes = 8 × 10⁶ bits (decimal, SI).
- 1 PB = 8 × 10¹⁵ bit ÷ 8000000 bit per MB = 1000000000 MB
Both units are defined exactly, so the factor is exact. Petabyte definition: petabyte; Megabyte definition: megabyte.
Worked examples
- A reading of 1 PB converts to 1000000000 MB.
1 PB × 1000000000 = 1000000000 MB - A value of 10 PB is 10000000000 MB.
10 PB × 1000000000 = 10000000000 MB
Petabyte to Megabyte conversion table
| Petabytes (PB) | Megabytes (MB) |
|---|---|
| 0.1 PB | 100000000 MB |
| 0.5 PB | 500000000 MB |
| 1 PB | 1000000000 MB |
| 2 PB | 2000000000 MB |
| 5 PB | 5000000000 MB |
| 10 PB | 10000000000 MB |
| 50 PB | 50000000000 MB |
| 100 PB | 100000000000 MB |
Where it's used
Petabytes are used for data centres and cloud providers, while megabytes appear in photos, documents and songs. Both measure amount of digital information, so the conversion is a fixed factor.
Petabyte to other data storage units
| Conversion | 1 PB equals |
|---|---|
| petabyte to megabyte | 1000000000 MB |
| petabyte to byte | 1 × 10¹⁵ B |
| petabyte to kilobyte | 1000000000000 kB |
| petabyte to gigabyte | 1000000 GB |
| petabyte to terabyte | 1000 TB |
| petabyte to bit | 8 × 10¹⁵ bit |
| petabyte to megabit | 8000000000 Mbit |
| petabyte to kibibyte | 976562500000 KiB |
Show 5 more units
| petabyte to mebibyte | 953674316.4 MiB |
|---|---|
| petabyte to gibibyte | 931322.5746 GiB |
| petabyte to kilobit | 8000000000000 kbit |
| petabyte to gigabit | 8000000 Gbit |
| petabyte to tebibyte | 909.4947018 TiB |
Frequently asked questions
How many megabytes are in 1 petabyte?
1 PB = 1000000000 MB.
How do I convert petabytes to megabytes?
Multiply the value in PB by 1000000000. For example, 15 PB × 1000000000 = 15000000000 MB.
Is the PB to MB conversion exact?
Yes. Both units are defined exactly, and 1 PB is exactly 1000000000 MB.
Sources
- The International System of Units (SI), 9th edition (SI Brochure), Bureau International des Poids et Mesures , Table 7 (SI prefixes); hertz, Table 4.
Last reviewed: . Factors are stored exactly and computed with 50-digit decimal arithmetic. See how we verify conversion factors.
Cite this page
APA
Scientific Converters. (2026, October 15). Convert Petabytes to Megabytes (PB to MB). Retrieved October 25, 2026, from https://scientificconverters.com/data-storage/petabytes-to-megabytes/
IEEE
Scientific Converters, "Convert Petabytes to Megabytes (PB to MB)," scientificconverters.com. Accessed: Oct. 25, 2026. [Online]. Available: https://scientificconverters.com/data-storage/petabytes-to-megabytes/