Password Utilities — Free Online Security Tools (2025)
Generate strong passwords, check password strength, and convert text into secure hashes — all in your browser. 100% free, private, and client-side.
Popular Tools
MD5 Parser
Convert text into MD5 hashes instantly and securely in your browser.
Password Generator
Generate strong, secure passwords with customizable options for maximum protection.
Password Strength Checker
Check how strong your password is and estimate how long it would take to crack.
SHA Hash Generator
Generate SHA-1, SHA-256, and SHA-512 hashes from your text input.
RIPEMD-160 Hash Generator
Create RIPEMD-160 hashes directly in your browser. A secure and private way to generate 160-bit hashes.
Salt Generator
Generate cryptographically secure random salts instantly in hex or base64 format. Perfect for password hashing and cryptographic applications.
UUID / GUID Generator
Generate UUIDs (v1, v4, v5) instantly and securely in your browser. Copy them with one click for use in apps, databases, and APIs.
Blake2 / Blake3 Hash Generator
Generate Blake2b, Blake2s, and Blake3 cryptographic hashes instantly in your browser.
PBKDF2 Key Derivation Tool
Derive secure cryptographic keys from passwords using PBKDF2. Customize iterations, salt, and key length directly in your browser.
Password Entropy Calculator
Calculate the entropy of your password and estimate its strength in bits. Check if your password is weak, moderate, or strong in 2025.
JWT Decoder
Decode JSON Web Tokens (JWT) instantly in your browser. View header, payload, and signature safely without sending data to a server.
JWT Generator Online
Generate JSON Web Tokens (JWT) instantly in your browser. Supports HS256, HS384, and HS512 signing algorithms. 100% secure and client-side.
Base64 Encoder / Decoder
Free online Base64 encoder and decoder. Convert text to Base64 or decode Base64 strings instantly — safe, private, and 100% client-side.
URL Encoder / Decoder
Encode or decode URI components instantly with our free online tool. 100% private, secure, and client-side.
Argon2 Key Derivation Tool
Derive secure cryptographic keys from passwords using Argon2id. Customize iterations, memory, parallelism, and hash length directly in your browser — 100% client-side.
Keccak Hash Generator
Generate Keccak hashes (224, 256, 384, 512) instantly in your browser. Free Keccak-256 hash tool for Ethereum, blockchain, and cryptography developers.
SHAKE Hash Generator
Generate SHAKE128 and SHAKE256 hashes with customizable output length. Free online SHAKE hash generator — fast, secure, and 100% client-side.
Hex ↔ UTF-8 ↔ Base64 Converter
Free online converter for Hex, UTF-8, and Base64. Encode or decode text instantly between formats — safe, private, and 100% client-side.
HKDF Generator
Generate secure cryptographic keys with HKDF (HMAC-based Key Derivation Function). Supports SHA-256, SHA-512, SHA3, and BLAKE2. Free online tool, 100% client-side.
Base58 Encoder / Decoder
Free Base58 encoder and decoder online. Convert text to Base58 or decode Base58 strings instantly — used in Bitcoin, blockchain, and IPFS.
Base32 Encoder / Decoder
Free online Base32 encoder and decoder. Convert text to Base32 or decode Base32 strings instantly — safe, private, and 100% client-side. Perfect for developers, cryptography, and two-factor authentication (2FA) secret keys.
Morse Code Translator Online
Free online Morse Code translator. Convert text to Morse Code or decode Morse back to plain text instantly — safe, fast, and 100% client-side.
Ascii85 / Base85 Encoder & Decoder
Encode and decode Ascii85/Base85 online instantly. Convert text or binary into Base85 or decode Base85 back to text — safe, fast, and 100% client-side.
Bech32 / Bech32m Encoder & Decoder
Encode and decode Bech32 or Bech32m addresses instantly online. Free tool for Bitcoin, Taproot, and blockchain developers — 100% client-side and secure.
Crypto PnL Calculator
Calculate crypto profits and losses instantly. Free online PnL calculator for Bitcoin, Ethereum, and other cryptocurrencies. Includes entry price, exit price, quantity, and fees.
Crypto Liquidation Price Calculator
Free online liquidation price calculator for crypto futures trading. Estimate liquidation price for long and short positions with leverage and collateral.
Risk/Reward Ratio Calculator
Free online Risk/Reward Ratio Calculator for crypto, forex, and stocks. Instantly calculate risk vs reward for your trades to manage risk effectively.
Crypto Pip Calculator
Free online Crypto Pip Calculator. Calculate pip values for BTC/USDT, ETH/USDT and other crypto pairs instantly. Manage your risk and position size with our pip value calculator — 100% client-side.
Crypto ROI Calculator
Calculate crypto ROI (Return on Investment) instantly. Enter your investment, buy price, and sell price to see profit/loss and ROI percentage. 100% client-side and private.
Crypto APY / APR Calculator
Free online Crypto APY / APR Calculator. Compare APR vs APY returns for staking and yield farming. Calculate compounding profits instantly — 100% client-side.
Crypto Break-Even Calculator
Free online Crypto Break-Even Calculator. Find the exact price your crypto investment needs to reach to break even after fees and costs. 100% private and client-side.
Crypto DCA Calculator
Free online Crypto DCA (Dollar Cost Averaging) Calculator. Simulate recurring crypto investments, calculate average entry price, ROI, and final portfolio value instantly.
Sharpe Ratio Calculator
Free Sharpe Ratio Calculator. Measure the risk-adjusted return of your crypto investments or trading strategies instantly — 100% client-side.
Value-at-Risk (VaR) Calculator
Free Value-at-Risk (VaR) Calculator. Estimate maximum potential losses of your crypto or trading portfolio at 90%, 95% and 99% confidence levels. 100% client-side.
Impermanent Loss Calculator
Free Impermanent Loss Calculator for DeFi liquidity providers. Estimate potential losses when providing liquidity to AMM pools like Uniswap, SushiSwap, and PancakeSwap.
Crypto Position Size Calculator
Free Crypto Position Size Calculator. Manage trading risk by calculating the optimal position size based on account balance, risk percentage, entry, and stop-loss price.
Fibonacci Retracement Calculator
Free online Fibonacci retracement calculator for crypto and forex trading. Instantly calculate Fibonacci levels (23.6%, 38.2%, 50%, 61.8%, 78.6%) from swing high and swing low prices. 100% client-side and private.
Pivot Points Calculator
Free online Pivot Points Calculator for crypto and forex trading. Instantly calculate support and resistance levels (S1, S2, S3, R1, R2, R3) from high, low, and close prices. 100% client-side and private.
Why Use Password Utils?
Password Utils provides a collection of free, privacy-focused tools to help you improve your online security. All tools run entirely in your browser, meaning your data never leaves your device.
Whether you need to generate strong passwords, test password strength, or convert text to cryptographic hashes, Password Utils makes it fast, simple, and secure.
Online Security Tools You Can Trust in 2025
In 2025, password security is more critical than ever. With the rise of cyber attacks, data breaches, and phishing attempts, having a strong and unique password for each account is not optional — it’s essential. Password Utils gives you modern, client-side solutions that adapt to today’s security needs.
Our generators and hash converters use the latest algorithms such as MD5, SHA-256, RIPEMD-160, and BLAKE3. By using our tools, you ensure that no data ever leaves your device, maintaining complete privacy while enjoying top-notch cryptographic security.
Frequently Asked Questions
Are these tools really free?
Yes, all tools on Password Utils are completely free to use and always will be.
Do I need to create an account?
No signup is required. All utilities run locally in your browser, with no login needed.
Is my data sent to any server?
Absolutely not. Everything runs on your device. Your input is never uploaded or tracked.
What’s the best password length in 2025?
Security experts recommend passwords of at least 16 characters with a mix of letters, numbers, and symbols. Use our generator to create one instantly.
Latest Guides & Tutorials
Understanding MD5 Hashes and Their Use Cases
Learn what MD5 is, when it should be used, and why stronger hashing algorithms are preferred today.
A Beginner’s Guide to SHA Hash Functions
Understand SHA hashing algorithms and when to use SHA-1, SHA-256, or SHA-512 in your projects.
UUID vs GUID Explained: What’s the Difference?
Understand the difference between UUID and GUID and how they’re used in databases, APIs, and software systems.
The Importance of Salt in Password Security
Understand what salts are, how they protect passwords, and why they’re critical in modern cryptography.
PBKDF2 Explained: Strengthening Password Security
A deep dive into PBKDF2, its role in password hashing, and how to configure it for maximum security.
BLAKE2 vs BLAKE3: The Future of Fast Cryptographic Hashing
Learn about BLAKE2 and BLAKE3, two modern hashing algorithms that combine speed and security for today’s applications.
SHA-1 vs SHA-256: Why You Should Upgrade Your Hashing
Compare SHA-1 and SHA-256 to understand which hashing algorithm is right for modern security needs.
SHA-256 vs SHA-512: Which Should You Use?
Understand the differences between SHA-256 and SHA-512 to choose the right algorithm for your application.
What is SHA-256 and Why is it Used in Blockchain?
A beginner-friendly explanation of SHA-256 and its importance in blockchain and digital security.
What is RIPEMD-160 and Why Does It Matter in Cryptography?
Discover RIPEMD-160: its origins, security features, and why it remains important in cryptography today.
RIPEMD-160 vs SHA-1: Which is More Secure Today?
Learn the key differences between RIPEMD-160 and SHA-1 and why RIPEMD-160 is a safer option today.
RIPEMD-160 vs SHA-256: Which Should You Use?
Should you use RIPEMD-160 or SHA-256? We break down the key differences to help you choose the right algorithm.
Understanding Password Entropy: How Strong Is Your Password Really?
Password entropy measures how unpredictable your password is. Discover how to calculate it and why it’s critical for your security.
Password Entropy Formula: A Beginner’s Guide with Examples
Learn how to calculate password entropy using the formula log2(R^L) and see how character sets and length affect strength.
Password Entropy vs Strength Checkers: What’s the Difference?
Not all strength meters are equal. Learn why entropy is a better way to measure password security than simple strength checkers.
What is a JWT? A Complete Guide to JSON Web Tokens
A beginner-friendly deep dive into JSON Web Tokens (JWTs): structure, use cases, pros and cons, and how to decode them securely.
JWT vs Session Cookies: Which Authentication Method is Better?
A deep comparison between JWTs and session cookies, their trade-offs, and recommendations for different types of applications.
How to Decode a JWT Safely: A Security Guide
A practical guide to safely decoding JWTs. Learn what to look for, what not to store in JWTs, and how to validate tokens properly.
What is Base64 Encoding? A Complete Beginner’s Guide
A beginner-friendly guide to Base64 encoding, why it matters, and how to use it in real-world scenarios.
Base64 in Web Development: Practical Use Cases
Real-world examples of how Base64 is used in APIs, HTML, CSS, and cryptography.
Base64 vs Hex Encoding: Which Should You Use?
A side-by-side comparison of Base64 and Hex encoding for developers.
What is URL Encoding? A Complete Guide for Developers
A developer-friendly guide to URL encoding, reserved characters, and how to safely encode or decode data in web applications.
Top Use Cases of URL Encoding and Decoding in Web Development
Discover practical examples where URL encoding is critical for modern applications.
URL Encoding vs Base64: What’s the Difference?
A side-by-side comparison of URL encoding and Base64 with examples, use cases, and pros/cons.