Utilities & Security
Calculate it. Convert it. Decode it. Done.
Passwords, QR codes, percentages, ratios, dates, JSON, CSV and the small technical jobs that should take a minute, without logging into another app.
What do you need to do?
Pick the job you recognise.
Password generator
Choose the exact length and number of uppercase letters, lowercase letters, numbers and symbols.
Open tool →QR code generator with logo
Create a QR code, customise colours, add your own centre logo and download PNG or SVG for free.
Open tool →Passphrase generator
Create a random multi-word passphrase with your choice of separator, capitals and optional number.
Open tool →UUID v4 generator
Generate one or a batch of random UUID v4 identifiers, then copy or download them.
Open tool →SHA hash / checksum generator
Generate SHA-256, SHA-384 or SHA-512 hashes locally for quick integrity checks.
Open tool →Secure random token / number
Generate a cryptographically random token or a random number inside a range you choose.
Open tool →Percentage calculator
Calculate percent-of, percentage change, or add and remove a percentage without rearranging formulas.
Open tool →Ratio calculator
Simplify a ratio, set a new width or height and get the matching dimension automatically.
Open tool →Date difference calculator
Count exact days and weeks between two calendar dates, with optional inclusive counting.
Open tool →Unix timestamp converter
Turn Unix seconds or milliseconds into readable local and UTC dates.
Open tool →JSON formatter & validator
Validate, pretty-print, sort or minify JSON, then copy or download the cleaned result.
Open tool →JSON ↔ CSV converter
Move structured data between JSON and spreadsheet-friendly CSV without uploading it.
Open tool →CSV table viewer
Paste or open CSV and inspect it as a readable table before sending it somewhere else.
Open tool →Base64 encoder / decoder
Encode Unicode text as Base64 or decode Base64 back into readable text locally.
Open tool →URL encoder / decoder
Encode or decode query values and full URLs without breaking the separators that matter.
Open tool →Small calculations, conversions and generators without another app.
OutMonkey’s Utilities & Security tools cover the little jobs that often send you to a calculator, developer utility or one-off generator: percentages, ratios, date differences, timestamps, JSON, CSV, Base64, URL encoding, passwords, QR codes, UUIDs, checksums and secure random values. The useful controls stay visible, the result is easy to copy, and you can move straight into the next job.