Secure Password Generator

Enter the length and the charset size and Secure Password Generator computes the entropy in bits directly on the page, so you can adjust assumptions and watch the result follow.

1. 1

   Step 1

   Type the necessary data.

2. 2

   Step 2

   Click the "Calculate" button to see the result instantly.

3. 3

   Step 3

   Review the result and details below before relying on it.

• 1

  Labels first: Secure Password Generator applies its computation to the length and the charset size exactly as typed, so a wrong unit or a comma read as a decimal mark shifts the entropy in bits silently.

• 2

  Isolate what drives the outcome: hold everything constant and move only the length, then read how the entropy in bits responds — that single-variable sweep is the fastest way to learn the sensitivity this page is hiding.

• 3

  Record the inputs with every output: a result only carries meaning beside the length and the charset size that produced it, and keeping the pair together lets you update just the field that moved instead of rebuilding the calculation from memory.

• Swapped inputs: Secure Password Generator cannot tell the length from the charset size, and the entropy in bits still looks plausible; re-read every labeled field before you quote the result.

• Copying the output and discarding the inputs: a bare result cannot be audited later, because the page has no memory of yesterday's entries — the assumptions travel with the number or the number is worthless in a month.