Yottabytes (YB) to Megabytes (MB) Converter
Convert yottabytes to megabytes.
1 YB = 1,000,000,000,000,000,000 MB
How to convert YB to MB
File sizes here use the decimal (SI) system, the same one drive makers and network providers use. In that system 1 Yottabyte is 1024 bytes and 1 Megabyte is 106 bytes. Divide one by the other and you get the ratio between the two units: 1024 ÷ 106 = 1018.
Yottabyte is the bigger unit, so you multiply. Every YB holds 1018 MB, which means the decimal point moves 18 places to the right.
On the ladder (B → KB → MB → GB → TB → PB → EB → ZB → YB → RB → QB) these two are 6 steps apart. Every step is a factor of 1,000, so 6 steps means 1,000 multiplied by itself 6 times, which is 1018.
The formula
MB = YB × 10181 YB = 1 × 1018 MB1018 means 1 followed by 18 zeros
Worked example 1: Converting 1 YB
1 YB × 1018 = 1 × 1018 MBThe decimal point moves 18 places to the right.
No storage system with published figures reaches a yottabyte yet.
Worked example 2: Converting 0.5 YB
0.5 YB × 1018 = 5 × 1017 MBThe decimal point moves 18 places to the right.
Worked example 3: Converting 12.75 YB
12.75 YB × 1018 = 1.275 × 1019 MBThe decimal point moves 18 places to the right.
Need the other direction? Open the MB to YB converter.
YB to MB examples
No storage system with published figures reaches a yottabyte yet. In megabytes that is 1 × 1018 MB.
| YB | MB |
|---|---|
| 1 YB | 1 × 1018 MB |
| 2.5 YB | 2.5 × 1018 MB |
| 10 YB | 1 × 1019 MB |
| 50 YB | 5 × 1019 MB |
| 100 YB | 1 × 1020 MB |
| 500 YB | 5 × 1020 MB |
| 1,000 YB | 1 × 1021 MB |
Where YB to MB comes up
A yottabyte is 1,000 zettabytes, which is 1024 bytes. Yottabytes are mostly a textbook and forecast unit. You meet them in articles about how large data totals could grow.
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.
Going from yottabytes down to megabytes always gives a bigger number, because the unit you land on is smaller. It is the usual direction when a limit or a form asks for a smaller unit than the one you have in mind.
YB to MB FAQ
How many megabytes are in 1 yottabyte?
There are 1018 megabytes in 1 yottabyte, so 1 YB = 1018 MB.
Is YB to MB 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 YB the two systems differ by about 20.9%.
How do I convert MB to YB?
Go the other way: divide by 1018, which moves the decimal point 18 places to the left. The swap button on the converter does it for you.