To convert bits to exabytes, multiply by 1.250000000e-19. That factor is the whole relationship: both units measure digital storage, so the conversion is a proportion with no offset and no substance-specific constant.
A single binary digit — the smallest unit of information. One billion gigabytes — the scale global internet traffic is counted in.
Decimal versus binary prefixes. Drive makers count a terabyte as 10¹² bytes; operating systems display 2⁴⁰ bytes and label it "TB". That is why a 1 TB disk shows as 931 GB. Bits versus bytes is a separate factor of eight on top. Below the calculator there is a step table for the values people look up most, and a second table putting real digital storage figures into exabytes so the number you get has something to be compared against.
The formula
bits- The amount you are converting, in bits
1.25000000000e-19- The exact number of exabytes in one bit
exabytes- The converted result
How it works, step by step
- Enter the value in bits.
- It is multiplied by 1.25000000000e-19, the exact factor between the two units.
- The answer is shown in exabytes, with the reverse conversion beneath it.
- Check the reference table if you want a figure of comparable size.
Worked examples
A round figure: 1 b in exabytes
A round figure comes to about 1 b. Multiplying by the factor: 1 × 1.25000e-19 = 1.25000e-19 EB. Dividing the answer back by 1.25000e-19 returns the figure you started with, which is the quickest way to check you have the factor the right way up.
A larger figure: 100 b in exabytes
At 100 b (a larger figure), the same quantity in exabytes is 100 × 1.25000e-19 = 1.25000e-17 EB. One bit is 1.25000e-19 exabytes, so the numbers shrink as expected.
How to read your score
Frequently asked questions
How many exabytes are in one bit?
Exactly 1.25000000000e-19. Every figure on this page is that one number multiplied by your input, so the only rounding is at the display step.
What is the formula to convert bits to exabytes?
exabytes = bits × 1.25000000000e-19. Reversed, bits = exabytes ÷ 1.25000000000e-19, which is the same as multiplying by 8.00000000000e+18.
Which is the bigger unit, the bit or the exabyte?
The exabyte. One bit is only 1.25000e-19 of a exabyte, so it takes 8.00000e+18 bits to make one exabyte.
What does this quantity actually measure?
Both units measure digital storage. That is why a single factor is enough: there is no temperature offset and no material property involved, unlike conversions that cross between different quantities.
What is a bit?
A single binary digit — the smallest unit of information.
What is a exabyte?
One billion gigabytes — the scale global internet traffic is counted in.
Why does my answer differ from another converter?
Almost always because the other tool rounded the factor before multiplying. This page keeps full double precision through the calculation and rounds only for display, and it prints the factor it used so you can see where any difference came from.
Bits to exabytes reference tables
| Bits | Exabytes |
|---|---|
| 0.5 b | 6.25000e-20 EB |
| 1 b | 1.25000e-19 EB |
| 2 b | 2.50000e-19 EB |
| 3 b | 3.75000e-19 EB |
| 5 b | 6.25000e-19 EB |
| 10 b | 1.25000e-18 EB |
| 20 b | 2.50000e-18 EB |
| 25 b | 3.12500e-18 EB |
| 50 b | 6.25000e-18 EB |
| 75 b | 9.37500e-18 EB |
| 100 b | 1.25000e-17 EB |
| 250 b | 3.12500e-17 EB |
| 500 b | 6.25000e-17 EB |
| 1000 b | 1.25000e-16 EB |
| 5000 b | 6.25000e-16 EB |
Exact factor: 1 bit = 1.25000000000e-19 exabytes.
| Quantity | b | EB |
|---|---|---|
| A plain-text page | 1.6e+04 b | 2.000e-15 EB |
| A photo from a phone | 3.2e+07 b | 4.000e-12 EB |
| A three-minute MP3 | 2.8e+07 b | 3.500e-12 EB |
| An hour of HD video | 2.88e+10 b | 3.6e-09 EB |
| A dual-layer Blu-ray | 4e+11 b | 5e-08 EB |
| A desktop hard drive | 3.2e+13 b | 4e-06 EB |
Published reference values, converted with the same factor this page uses.