Megabytes (MB) to Petabytes (PB) Converter
Convert megabytes to petabytes.
1 MB = 0.000000001 PB
How to convert MB to PB
File sizes here use the decimal (SI) system, the same one drive makers and network providers use. In that system 1 Megabyte is 106 bytes and 1 Petabyte is 1015 bytes. Divide one by the other and you get the ratio between the two units: 106 ÷ 1015 = 10−9.
Megabyte is the smaller unit, so you divide. One MB is only 1 × 10−9 of a PB, which means the decimal point moves 9 places to the left.
On the ladder (B → KB → MB → GB → TB → PB → EB → ZB → YB → RB → QB) these two are 3 steps apart. Every step is a factor of 1,000, so 3 steps means 1,000 multiplied by itself 3 times, which is 109.
The formula
PB = MB ÷ 1,000,000,0001 MB = 1 × 10−9 PB
Worked example 1: Converting 4 MB
4 MB ÷ 1,000,000,000 = 4 × 10−9 PBThe decimal point moves 9 places to the left.
4 MB is about one typical phone photo saved as a JPEG.
Worked example 2: Converting 0.5 MB
0.5 MB ÷ 1,000,000,000 = 5 × 10−10 PBThe decimal point moves 9 places to the left.
Worked example 3: Converting 12.75 MB
12.75 MB ÷ 1,000,000,000 = 1.275 × 10−8 PBThe decimal point moves 9 places to the left.
Need the other direction? Open the PB to MB converter.
MB to PB examples
4 MB is about one typical phone photo saved as a JPEG. In petabytes that is 4 × 10−9 PB.
| MB | PB |
|---|---|
| 1 MB | 1 × 10−9 PB |
| 2.5 MB | 2.5 × 10−9 PB |
| 10 MB | 1 × 10−8 PB |
| 50 MB | 5 × 10−8 PB |
| 100 MB | 1 × 10−7 PB |
| 500 MB | 5 × 10−7 PB |
| 1,000 MB | 0.000001 PB |
Where MB to PB comes up
A megabyte is 1,000 kilobytes, about a minute of MP3 audio at 128 kbps. Megabytes are what you see on photos, PDFs, songs and slide decks, and they sit behind most email attachment and upload limits.
A petabyte is 1,000 terabytes, or a million gigabytes. Petabytes belong to data centres, research archives, big analytics warehouses and the storage side of large cloud services.
Going from megabytes up to petabytes always gives a smaller number, because you are counting in bigger chunks. People do it to make a long number readable, or to compare a file with the size of a drive or a plan.
MB to PB FAQ
How many petabytes are in 1 megabyte?
One megabyte is 1 × 10−9 of a petabyte. It takes 1,000,000,000 megabytes to make 1 petabyte.
Is MB to PB decimal or binary?
This page is decimal (SI), where 1 KB = 1,000 B. Operating systems often count in powers of 1,024 and still print KB, MB or GB, when they really mean KiB, MiB and GiB. At PB the two systems differ by about 12.6%.
How do I convert PB to MB?
Go the other way: multiply by 1,000,000,000, which moves the decimal point 9 places to the right. The swap button on the converter does it for you.