How Many Zeros in an Exabyte?
How many zeros in an exabyte? An exabyte (EB) has 18 zeros in the decimal system: 1,000,000,000,000,000,000 bytes, or 1018 bytes. One exabyte equals 1,000 petabytes, or one quintillion bytes. The prefix "exa-" comes from the Greek "hexa" (six), marking it as the sixth SI storage step above a single byte. See also: Gigabyte zeros.
An exabyte has
18
zeros
- Written Form
- 1 followed by 18 zeros bytes
- Scientific
- 10¹⁸ bytes
- Binary (IEC)
- 2⁶⁰ bytes (EiB)
Verifying the Zero Count in an Exabyte
The direct answer: exactly 18 zeros, equal to one quintillion. The binary equivalent — an exbibyte (EiB) — equals 260 bytes, about 15.3% larger. See also: Petabyte zeros.
| Unit | Bytes | Zeros | Notation |
|---|---|---|---|
| Exabyte (decimal, SI) | 1,000,000,000,000,000,000 | 18 | 1018 |
| Exbibyte (binary, IEC) | 1,152,921,504,606,846,976 | — | 260 |
What Is 1 Billion Gigabytes Called?
One billion gigabytes is an exabyte. Since 1 gigabyte = 109 bytes and 1 exabyte = 1018 bytes, dividing gives exactly 109 gigabytes per exabyte.
- Gigabyte (GB)
- 9 zeros — 1,000 MB
- Terabyte (TB)
- 12 zeros — 1,000 GB
- Petabyte (PB)
- 15 zeros — 1,000 TB
- Exabyte (EB)
- 18 zeros — 1,000 PB = 1,000,000,000 GB
How Many Exabytes of Data Exist on the Internet?
Global internet traffic surpassed 400 exabytes per month in the mid-2020s — a single exabyte could hold roughly 11 million 4K movies.
The total amount of data ever generated across all digital sources is measured in the thousands of exabytes, which is why the next unit up — the zettabyte (1021 bytes) — has become the preferred scale for describing worldwide data volumes.
Where Exabyte-Scale Numbers Appear
- Global monthly internet traffic estimates
- Total cumulative data stored by major cloud providers
- Large-scale scientific data archives (genomics, astronomy)
Zeros in an Exabyte: FAQ
What comes before an exabyte?
Quick answer
Petabyte comes right before exabyte — an exabyte is exactly 1,000 petabytes.
What comes after an exabyte?
Quick answer
Zettabyte comes next, followed by yottabyte.
How many digits does an exabyte have?
An exabyte has 19 digits in total — that's the digit 1 followed by 18 zeros.
Is an exabyte the same as a quintillion bytes?
Yes — a decimal exabyte (1018 bytes) is exactly one quintillion bytes.
Does any consumer device use exabyte-scale storage?
No — exabyte scale is strictly enterprise and infrastructure territory; even large corporate data centers typically measure capacity in petabytes.
How many exabytes are in a zettabyte?
Exactly 1,000 exabytes make one zettabyte.