Random Number Generator
Crypto-strong random integers with unbiased sampling.
Use tool →QR codes, barcodes, passwords and random data. Every tool below is free, needs no sign-up, and runs entirely in your browser — your data never leaves your device.
Crypto-strong random integers with unbiased sampling.
Use tool →Strong passwords with per-set guarantees and entropy rating.
Use tool →Batch serials in license-key format, unambiguous charset.
Use tool →Text or URL to QR with error levels and PNG download.
Use tool →CODE128 and EAN-13 barcodes as crisp print-ready SVG.
Use tool →Bulk UUID v4 identifiers from crypto randomness, with case and hyphen options.
Use tool →Four harmony palettes from one base color — complementary, analogous, triadic, split.
Use tool →BMI, calories, heart rate and body calculators
Browse category →Age, loans, sizes and everyday lookups
Browse category →Encoders, formatters, hashes, ciphers and port checks
Browse category →Units, geometry and number converters
Browse category →Case converters, symbols and text utilities
Browse category →Resize, compress, crop and convert — all local
Browse category →Lucky wheels, pickers and novelty tools
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