Developer, Cryptography & Security Utilities
Generate secure passwords, hash text with SHA/MD5, encode Base64, and format JSON. Fast developer utilities with client-side isolation.
Available Developer & Crypto (5)
100% Free & UnlimitedCompute cryptographic hashes (SHA-256, SHA-1, SHA-512) directly on-device using Web Crypto.
Format, prettify, indent, and minify JSON data structures with syntax verification.
Convert characters to HTML entities (<, &) or decode named and numeric HTML entities.
Convert between number bases (Decimal, Binary, Hex, Octal) and compute internet download transfer times.
Calculate IPv4 CIDR subnet masks, wildcard masks, network addresses, broadcast addresses, and usable host ranges.
Underlying Mathematical & Technical Formulas
Standard formulas utilized in our client-side calculation engines
E = L * log2(R)Calculates cryptographic password strength in bits based on length L and character pool size R.
Frequently Asked Questions
Is it safe to generate passwords or hash tokens here?
Yes. Our generator uses crypto.getRandomValues() directly from the Web Cryptography API. Zero data leaves your browser sandbox.