Yottabytes (YB)
The yottabyte (YB) is 999,999,999,999,999,983,222,784 bytes under the SI (decimal) definition used by storage manufacturers, network equipment and macOS.
Convert yottabytes to any data unit
1 yottabyte = 1 × 1015 gigabytes
Quick facts
- Unit
- Yottabyte (plural: yottabytes)
- Symbol
- YB
- Measures
- Information / Data
- System
- Decimal (SI)
- Equals
- 1 × 1024 bytes
- Definition
- 999,999,999,999,999,983,222,784 bytes (10^24), the SI definition.
1 yottabyte in other units
| Gigabytes | 1 × 1015 GB |
| Megabytes | 1 × 1018 MB |
| Bytes | 1 × 1024 B |
| Terabytes | 1,000,000,000,000 TB |
| Bits | 8 × 1024 bit |
| Kilobytes | 1 × 1021 kB |
| Gigabits | 8 × 1015 Gbit |
| Megabits | 8 × 1018 Mbit |
What is a yottabyte?
The yottabyte (YB) is 999,999,999,999,999,983,222,784 bytes under the SI (decimal) definition used by storage manufacturers, network equipment and macOS. Windows still reports sizes with 1024-based units but labels them YB, which is why a new drive shows less space than advertised. The binary counterpart is the yobibyte (YiB).
Where the yottabyte sits among data units
The yottabyte is number 59 of 64 on our scale of data units, ordered from smallest to largest.
Yottabytes in real life
- No storage system yet holds a yottabyte; it would take trillions of hard drives.
One yottabyte is about 6.7 years of worldwide data creation.
Top yottabyte conversions
Common amounts of yottabytes
Convert yottabytes to all 63 other units
Bits & bytes
- YB to B
- YB to bit
- YB to nibble
- YB to o
- YB to block
- YB to word (16-bit)
- YB to DWORD
- YB to QWORD
- YB to crumb
- YB to memory page
- YB to octaword
Decimal (SI)
- YB to GB
- YB to MB
- YB to TB
- YB to kB
- YB to Gbit
- YB to Mbit
- YB to Tbit
- YB to kbit
- YB to PB
- YB to Pbit
- YB to EB
- YB to Ebit
- YB to ZB
- YB to Zbit
- YB to Ybit
- YB to QB
- YB to RB
- YB to Qbit
- YB to Rbit
Binary (IEC)
- YB to GiB
- YB to MiB
- YB to KiB
- YB to TiB
- YB to PiB
- YB to Gibit
- YB to Mibit
- YB to EiB
- YB to Kibit
- YB to Tibit
- YB to YiB
- YB to ZiB
- YB to Pibit
- YB to Eibit
- YB to Yibit
- YB to Zibit
Legacy binary (JEDEC)
Information theory
Media & everyday comparisons
Convert to yottabytes
Frequently asked questions
What is a yottabyte?
The yottabyte (YB) is 999,999,999,999,999,983,222,784 bytes under the SI (decimal) definition used by storage manufacturers, network equipment and macOS.
How is the yottabyte defined?
999,999,999,999,999,983,222,784 bytes (10^24), the SI definition.
How many gigabytes are in a yottabyte?
One yottabyte equals 1e15 gigabytes.
How many megabytes are in a yottabyte?
One yottabyte equals 1e18 megabytes.
How many bytes are in a yottabyte?
One yottabyte equals 1e24 bytes.