Calculate password entropy in bits to measure password strength against brute-force attacks.
Estimate the time required to brute-force a password given its length, character set, and hash rate.
Generate password hashes using PBKDF2-SHA256 with 600,000 iterations for secure password storage.
Calculate pagination parameters including page count, offset values, and next/previous page navigation for any API.
Evaluates password strength using zxcvbn entropy analysis: score, crack time estimate, length, character diversity, dictionary words, and pattern repetition.
Cloud tools (AWS IAM policy analyzer), converters (JSON to YAML, Excel to CSV), CIDR calculator, and extras (hash generator SHA-1/256/384/512, Markdown quick editor with live preview). (Password strength checker has its own dedicated page.)
Password Entropy Calculator lets you calculate password entropy in bits to measure password strength against brute-force attacks.. Everything runs inside your browser — nothing is uploaded to a server. It works on any device with a modern web browser.
Calculate password entropy in bits to measure password strength against brute-force attacks. It's ideal for developers, designers, and anyone who needs to calculate password entropy in bits to measure password strength against brute-force attacks without installing software or sending data to external servers.
Direct text entry, file upload, or URL-based input — depending on the tool. All numeric values are entered through input fields with real-time updates.
Yes. After the initial page load, Password Entropy Calculator runs entirely on your device with no internet connection needed. All processing is done locally.
Tools cover JavaScript, CSS, HTML, SQL, Python, JSON, XML, CSV, and more. Check individual tool descriptions for specifics.
No. All code processing — formatting, minification, conversion, hashing — runs locally in your browser.
Yes. Since processing is local, performance depends on your device. Most operations handle large files without issue.
Yes. SQL uses sql-formatter, JSON uses native JSON.parse, and other formatters follow widely adopted formatting rules.
Yes. All developer tools work fully offline after the initial page load.
Time Converter
Convert between time units including seconds, minutes, hours, days, weeks, months, and years with precise decimal results.
Diff Checker
Compares two input texts side-by-side, highlighting inserted, deleted, and changed lines with distinct background colors.
Regex Tester
Provides an interactive environment where users can write a regular expression pattern, test it against sample strings, and view real-time match.
JSON Formatter
Pretty-prints raw JSON with configurable indent width, key sorting, and bracket collapsing options while flagging syntax errors with exact.
JS Minifier
Strips comments, whitespace, and shortens local variable names in JavaScript source without altering execution semantics.
Base64 Encode/Decode
Encodes text or small files into Base64 strings and decodes them back with automatic MIME-type detection for binary safety.