One-Time Pad
Calculate One-Time Pad instantly with the exact formula and a worked example. Free online calculator — no signup, works on mobile.
One-Time Pad
Key length
Security
256
More about: One-Time Pad
What it calculates
The “One-Time Pad” calculator computes Security from 1 parameter: key length.
Standard IT calculations for developers and sysadmins.
Example calculation
With parameters Key length = 256 the result is 256.
How to use
- Enter the parameter values — every field above is adjustable with a slider.
- The result and related metrics are calculated automatically as you type.
- Use the additional metrics shown (if any) where needed.
- Copy the result or bookmark the page.