Calculateur de Passphrase Entropy
Estimate passphrase entropy from word count and word-list size.
Formula and method
This calculator computes Entropy directly in your browser without sending data to an external server.
Mathematical formula
- Entropy:
words × Math.log2(wordlist)
Variables and parameters
- Words (words): default value 5.
- Word-list size (wordlist): default value 7776 words.
Some formulas are undefined for certain input combinations (such as division by zero or logarithms of non-positive numbers). In those cases the live tool displays an alert instead of NaN.
Embed this tool
Paste this snippet into your own site or blog post to embed a live, working copy of this tool. It links back to the full page on SpecWhale.
Frequently asked questions
What equation and variables does Passphrase Entropy Calculator use?
Passphrase Entropy Calculator evaluates outputs such as <strong>Entropy</strong> based on inputs including Words, Word-list size. Check the Mathematical Method section for the explicit formula.
What happens if I enter invalid or zero values into Passphrase Entropy Calculator?
If an input combination is mathematically undefined (such as division by zero or negative square roots), SpecWhale alerts you gracefully rather than returning invalid NaN outputs.
Are my calculations in Passphrase Entropy Calculator saved or private?
All calculations are 100% private and run locally in your Web browser. Your numbers are never uploaded to any server, but can be saved locally to your device or exported as CSV/JSON.
Is Passphrase Entropy Calculator free to use?
Yes. Passphrase Entropy Calculator is completely free, has no usage limit, and does not require an account, email, or API key.
Does Passphrase Entropy Calculator store or upload my data?
No. Passphrase Entropy Calculator calculates everything locally in your browser. Nothing you type is sent to a server or stored by SpecWhale.
How accurate is Passphrase Entropy Calculator?
Passphrase Entropy Calculator uses a standard formula (see the Method section above for the exact expression). For high-stakes financial, medical, or legal decisions, confirm the result with a professional or an authoritative source before relying on it.
Can I embed Passphrase Entropy Calculator on my own website?
Yes. Use the "Embed this tool" snippet on this page to add a free, working copy of Passphrase Entropy Calculator to your own blog post or page.